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Name Community Reward Solved by Diff. Attempted by Diff. Success ratio Feedbacks Creation date Tags
Onboarding 5 xp 1342182 +941 1589525 +1069 84.44% 4.66
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68992135845937627891
 2014-08-10 Conditions

Easy

Name Community Reward Solved by Diff. Attempted by Diff. Success ratio Feedbacks Creation date Tags
Power of Thor - Episode 1 50 xp 285965 +113 459683 +227 62.21% 4.45
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1574273082148352368
 2014-07-23 Conditions
Temperatures 50 xp 178264 +103 248343 +131 71.78% 4.29
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1007761122369425407
 2014-07-23 ArraysConditionsLoops
ASCII Art 50 xp 90615 +37 137622 +58 65.84% 4.45
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65922792756188226
 2014-07-23 ArraysLoopsStrings
Chuck Norris 50 xp 75949 +21 105094 +36 72.27% 4.28
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41312349868289163
 2014-07-23 ConditionsEncodingLoopsStrings
MIME Type 50 xp 62763 +33 76734 +38 81.79% 4.24
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30122065848155114
 2014-07-23 ConditionsHash tablesLoopsStrings
Defibrillators 50 xp 57325 +37 68018 +53 84.28% 4.29
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30161810699144116
 2014-07-23 DistancesLoopsTrigonometry
Horse-racing Duals 75 xp 72656 +34 94387 +54 76.98% 4.29
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3800245697916994
 2014-07-23 Loops
Mars Lander - Episode 1 75 xp 143427 +39 188327 +58 76.16% 4.30
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616828631465370200
 2014-08-10 Conditions
The Descent 50 xp 465207 +270 868619 +543 53.56% 4.38
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239051010539668041113
 2016-03-03 Loops
Brackets, extreme edition. x 50 xp 7984 +4 9343 +4 85.45% 4.39
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7524611442110
 2016-02-23
May the Triforce be with you! x 50 xp 4932 +2 6109 +3 80.73% 4.28
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3962291161312
 2016-03-25 Ascii ArtLoops
XML MDF-2016 x 50 xp 1412 1582 +1 89.25% 4.27
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1291044241
 2016-05-17
Jack Silver: The Casino x 50 xp 2262 2707 83.56% 4.06
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185130812212
 2016-07-08
Rugby score x 50 xp 2390 +3 3129 +1 76.38% 4.22
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240156691710
 2016-08-09
How time flies x 50 xp 1943 3808 +1 51.02% 3.44
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1611261187865
 2016-08-18
Nature of quadrilaterals x 50 xp 1741 +2 2477 +2 70.29% 4.23
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196129491012
 2016-09-14 GeometryMathematicsStringsTrigonometry
Balanced ternary computer: encode x 50 xp 2451 +3 3656 +2 67.04% 4.23
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244121582212
 2016-09-21
Bulk Email Generator x 50 xp 1432 2164 66.17% 4.16
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151107381511
 2016-11-04
Horse-racing Hyperduals x 50 xp 1614 +2 2091 +2 77.19% 4.21
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1599854143
 2016-11-13 Loops
Self-driving car testing x 50 xp 1360 +1 2005 +1 67.83% 4.24
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16010135138
 2016-11-16
Monday Tuesday Happy Days x 50 xp 1025 1406 72.90% 4.08
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103915484
 2017-05-03
What's so complex about Mandelbrot? x 50 xp 1024 1319 +1 77.63% 4.02
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10486421410
 2017-10-21
The River I. x 50 xp 8613 +9 10207 +16 84.38% 4.41
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10696032002713
 2017-10-23
The River II. x 50 xp 4345 +1 5402 +1 80.43% 4.37
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5322911042111
 2017-10-24
Text formatting x 50 xp 1562 2199 71.03% 4.11
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161109611610
 2017-11-03
The Travelling Salesman Problem x 50 xp 2684 +1 3500 +1 76.69% 4.30
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29218073157
 2017-11-24
Organic Compounds 🔬 x 50 xp 1403 2619 53.57% 4.24
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196100311616
 2017-12-01 String manipulation
Simple Awalé x 50 xp 1422 +1 1668 +2 85.25% 4.17
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1431146155
 2017-12-06
Morellet’s random lines x 50 xp 631 +3 1205 +3 52.37% 3.97
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8249201314
 2018-01-18 ConditionsGeometryMathematics
Disordered First Contact x 50 xp 1501 2485 60.40% 4.15
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163139461212
 2018-06-14 Encoding
ISBN Check digit x 50 xp 2211 +2 2878 +2 76.82% 4.01
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206171852124
 2018-06-21 ArithmeticCheck-digit
Bank Robbers x 50 xp 5158 +2 7732 +4 66.71% 4.42
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6953651071518
 2018-06-23 LoopsMathematics
1×1×1 Rubik’s cube movements x 50 xp 1383 1861 74.31% 4.13
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169101421815
 2018-06-27
orDer oF succeSsion x 50 xp 2185 +1 3242 +2 67.40% 4.37
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325145581412
 2018-07-07 DFSGraphsPathfinding
Ghost Legs x 50 xp 8871 +10 12474 +21 71.12% 4.58
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1380592115175
 2018-08-30 Ascii ArtConditionsLoops
Add'em Up x 50 xp 1476 1847 79.91% 4.29
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18211128416
 2018-09-30 Greedy algorithmsSorting
Pirate's treasure x 50 xp 2092 +3 3623 +8 57.74% 4.21
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23115074615
 2018-09-30 ArraysConditionsLoops
Encryption/Decryption of Enigma Machine x 50 xp 4205 +4 5444 +7 77.24% 4.50
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679300631716
 2018-10-14 CryptographyEncodingString manipulationStrings
Rooks Movements x 50 xp 1112 +1 1820 +1 61.10% 4.18
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1359735165
 2018-10-21 chessConditionLoops
Rectangular block spinner x 50 xp 686 +1 1007 68.12% 4.08
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845029144
 2018-10-27 String manipulation
Darts x 50 xp 1349 1725 78.20% 4.30
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1721373196
 2018-10-31 Collision DetectionGeometry
Dead men's shot x 50 xp 1878 +2 3038 +1 61.82% 4.30
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244125561210
 2018-11-03 Dot productGeometry
Credit Card Verifier (Luhn’s algorithm) x 50 xp 2273 +3 2529 +8 89.88% 4.31
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2491388380
 2018-12-21
Hunger Games x 50 xp 1408 +1 2253 +2 62.49% 4.03
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163112602415
 2018-12-26 Sorting
The Dart 101 x 50 xp 901 +1 1648 +5 54.67% 3.99
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10781391116
 2019-01-04 Conditions
Brick in the Wall x 50 xp 1101 +1 1236 +1 89.08% 4.24
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109913661
 2019-02-09 Greedy algorithmsMathematics
Lumen x 50 xp 4822 +5 7113 +9 67.79% 4.46
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697363921313
 2019-02-20 2D arrayLoops
Blowing Fuse x 50 xp 2172 +3 2963 +3 73.30% 4.31
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2391646836
 2019-02-27 Conditions
Stall tilt x 50 xp 461 741 62.21% 4.02
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594212127
 2019-06-07 Physics
1D Spreadsheet x 50 xp 5258 +5 7668 +6 68.57% 4.61
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98736453169
 2019-06-21 Dependency GraphLazy EvaluationMemoization
Hooch Clash x 50 xp 392 700 +2 56.00% 3.28
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3725321225
 2019-06-23 Brute-forceDiophantine EquationHoochNumber theoryReading the statement
Count as I count x 50 xp 533 761 70.04% 4.30
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75401553
 2019-07-09 Combinatorics
Are The Clumps Normal x 50 xp 436 +1 461 +1 94.58% 4.13
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52321436
 2019-07-10 Number theory
Smooth! x 50 xp 396 +3 432 +3 91.67% 4.00
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542416134
 2019-07-10 Brute-forceFruitNumber theoryReading the statementSmooth
A child's play x 50 xp 1410 +3 2368 +4 59.54% 4.45
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26212827107
 2019-07-13
Detective Pikaptcha EP1 x 50 xp 2772 +2 3824 +4 72.49% 4.43
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35018363112
 2019-07-25 mazeneighbour count
Detective Pikaptcha EP2 x 50 xp 1549 +3 3163 +5 48.97% 4.46
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2661172889
 2019-07-25 mazeSimulation
Happy Numbers x 50 xp 2219 +2 3119 +4 71.14% 4.36
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2881597165
 2019-08-01 Data TypesLoops
Dolbear's Law x 50 xp 624 +1 761 +1 82.00% 3.98
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714940105
 2019-08-08 AverageFormulas
Hello, World! x 50 xp 307 661 46.44% 3.62
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422319199
 2019-08-25 GeolocationGreat-circle distanceSexagesimal systemTrigonometry
Rectangle Partition x 50 xp 3380 +5 6030 +12 56.05% 4.53
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61623866166
 2019-09-16 ArraysLoops
Unit Fractions x 50 xp 1389 2107 +3 65.92% 4.41
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23311134162
 2019-09-30 Data TypesNumber theory
Graffiti on the fence x 50 xp 1589 2337 67.99% 4.46
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2841243977
 2019-11-22 Array forbiddenIntervals
Create the longest sequence of 1s x 50 xp 1854 +2 2363 +4 78.46% 4.43
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2561403964
 2019-12-05 String manipulation
1D Bush Fire x 50 xp 1007 1428 70.52% 4.41
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136902431
 2020-01-06 💦💦💦🔥🔥🔥
Rock Paper Scissors Lizard Spock x 50 xp 3465 +7 4974 +13 69.66% 4.52
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5562645179
 2020-03-20 LizardRock Paper ScissorsSpock
TicTacToe x 50 xp 874 +2 1679 +7 52.05% 4.33
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123612493
 2020-04-17 2D arrayConditionsSimulationString manipulation
Van Eck's sequence x 50 xp 995 1476 +2 67.41% 4.35
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15810526102
 2020-04-30
Sudoku Validator x 50 xp 2744 +9 4193 +7 65.44% 4.44
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3882116293
 2020-05-07
Auto pickup x 50 xp 321 378 84.92% 4.16
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50281363
 2020-05-31 ParsingString manipulation
A mountain of a mole hill x 50 xp 259 564 +2 45.92% 4.33
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5922744
 2020-06-05
Benford's law x 50 xp 390 423 92.20% 4.34
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66271442
 2020-07-16 Probability
Murder in the village! x 50 xp 187 332 56.33% 4.28
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42131222
 2020-08-06 LogicRegular expressions
Robot Show x 50 xp 271 +3 390 +2 69.49% 4.41
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6328941
 2020-08-14 Strive for Simplicity
Dungeons and Maps x 50 xp 1678 +8 2525 +15 66.46% 4.49
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3151254194
 2020-08-20 2D arrayLoopsPathfindingStrings
The Electrician Apprentice x 50 xp 169 226 +1 74.78% 4.33
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3919731
 2020-08-30
Is that a possible word? EP1 x 50 xp 210 242 +1 86.78% 4.25
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36261021
 2020-09-11 State machine
7-segment scanner x 50 xp 1133 +1 1869 +3 60.62% 4.34
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1681043683
 2020-09-17 Ascii ArtConditionsLoopsString manipulation
Extended Hamming Codes x 50 xp 140 +1 189 +1 74.07% 4.13
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2814552
 2020-09-20 Error-correcting code
Flip The Sign x 50 xp 289 346 83.53% 3.94
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38271528
 2020-09-20 Grid
Reverse FizzBuzz x 50 xp 244 +1 350 +1 69.71% 4.20
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37171213
 2020-09-23
Prefix code x 50 xp 1693 +7 2269 +13 74.61% 4.51
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2891653113
 2020-09-27 decoderString manipulationTries
Logically reasonable inequalities x 50 xp 253 376 +1 67.29% 4.42
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4025321
 2020-10-01 Graphs
Equivalent Resistance, Circuit Building x 50 xp 300 +2 388 +7 77.32% 4.48
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7138332
 2020-10-01 ParsingPhysics
Unique Prefixes x 50 xp 271 480 56.46% 4.32
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56261232
 2020-10-10 ArraysLoopsString manipulation
Tree Paths x 50 xp 417 530 +2 78.68% 4.46
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7441930
 2020-10-21 Binary TreeGraphs
Nicholas Breakspeare and Hugh of Evesham x 50 xp 188 384 +3 48.96% 3.29
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2216141014
 2020-10-30 String manipulation
Decode the message x 50 xp 187 +1 265 70.57% 3.86
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27131454
 2020-11-06 CryptographyEncodingModular calculus
Number derivation x 50 xp 152 180 84.44% 4.24
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3415505
 2020-11-21 ArithmeticMathematics
Low Resolution: What's The Shape? x 50 xp 113 +1 130 +1 86.92% 3.84
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1311922
 2020-12-10 GeometryLoops
Mountain Map x 50 xp 143 +2 171 +4 83.63% 3.98
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24101332
 2020-12-18 Ascii Art
Next growing number x 50 xp 765 +2 1109 +4 68.98% 4.34
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129832491
 2020-12-19 Numbers
Place the Parenthesis x 50 xp 85 137 +2 62.04% 3.89
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148850
 2020-12-23 Maths
Hidden Messages In Images x 50 xp 127 +3 136 +3 93.38% 4.33
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247801
 2021-01-08 asciibitwiseImage processingLoopssteganography

Medium

Name Community Reward Solved by Diff. Attempted by Diff. Success ratio Feedbacks Creation date Tags
Skynet Revolution - Episode 1 150 xp 35715 +5 62417 +11 57.22% 4.73
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31177111211320
 2014-07-16 BFSGraphs
The Last Crusade - Episode 1 100 xp 16781 +5 21007 +3 79.88% 4.41
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857473173206
 2014-07-23 Conditions
Mars Lander - Episode 2 150 xp 10316 +3 35577 +11 29.00% 4.64
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1142214532631
 2014-07-23 DistancesTrigonometry
Stock Exchange Losses 100 xp 21192 +6 25252 +9 83.92% 4.34
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11186182953713
 2014-07-23 ArraysConditionsLoops
Network Cabling 100 xp 11020 +4 15349 +10 71.80% 4.24
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5133281393618
 2014-07-23 DistancesLoopsMedians
Conway Sequence 100 xp 14841 +2 16212 +4 91.54% 4.36
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6684001382113
 2014-07-23 Sequences
Telephone Numbers 100 xp 13363 +5 16278 +5 82.09% 4.42
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692344137149
 2014-07-23 SetsTries
Dwarfs standing on the shoulders of giants 100 xp 10216 12532 +3 81.52% 4.40
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50129092138
 2014-07-23 GraphsMemoizationRecursion
Bender - Episode 1 100 xp 9227 +2 14561 +3 63.37% 4.55
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
812289741318
 2014-07-23 SimulationState machine
Scrabble 100 xp 13681 +6 16674 +12 82.05% 4.42
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8374621252315
 2014-07-23 ConditionsLoops
The Gift 100 xp 12325 +3 14656 +2 84.10% 4.36
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555376131171
 2014-07-23 Greedy algorithms
Mayan Calculation 100 xp 9243 11290 81.87% 4.44
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53027371199
 2014-07-23 RadixStrings
Shadows of the Knight - Episode 1 100 xp 51840 +35 118384 +89 43.79% 4.60
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5814177742573115
 2014-08-10 Binary searchIntervals
Don't Panic - Episode 1 100 xp 27160 +8 38261 +10 70.99% 4.47
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18428552535618
 2014-10-25 Conditions
War 100 xp 16874 +3 25753 +4 65.52% 4.18
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4972791065735
 2015-02-03 Queues
There is no Spoon - Episode 1 100 xp 51534 +21 109795 +29 46.94% 4.40
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35211857532115101
 2015-04-25 Lists
ANEO Sponsored Puzzle 100 xp 9050 +18 25307 +37 35.76% 4.11
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298186483240
 2018-06-25 ArithmeticsIntervalsLoopsMathematics
Game of life x 50 xp 1953 +1 2555 +2 76.44% 4.35
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1681194711
 2016-02-23
Vote counting x 50 xp 780 989 78.87% 3.98
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46492972
 2016-02-23
Gravity x 50 xp 3049 3588 84.98% 4.38
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2101275131
 2016-02-23
Dominoes Path x 50 xp 292 397 73.55% 4.27
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2313720
 2016-02-23
Bust speeding vehicles x 50 xp 1129 1447 +1 78.02% 4.14
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90633565
 2016-02-23
Ascii Graph x 50 xp 1084 1329 81.57% 4.37
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105662141
 2016-02-23
Reverse Polish Notation x 50 xp 429 655 65.50% 3.47
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3127271312
 2016-02-23 Reverse Polish NotationStack
Minimal number of swaps x 50 xp 2438 3218 +1 75.76% 4.15
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1037934114
 2016-02-23
Rubik® x 50 xp 2280 2698 84.51% 3.85
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123107703412
 2016-02-23
CGS minifier x 50 xp 452 552 81.88% 4.22
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32231211
 2016-02-23
The Fastest x 50 xp 5418 +2 6536 +3 82.89% 3.85
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2242092323411
 2016-02-23
DDCG Mapper x 50 xp 936 1134 82.54% 4.18
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73523431
 2016-02-23
Maze x 50 xp 816 1118 72.99% 4.51
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109581012
 2016-02-23
The Ultimate Test x 50 xp 308 454 67.84% 4.04
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2316823
 2016-02-24
These Romans are crazy! x 50 xp 1486 +1 1925 +1 77.19% 4.34
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80581812
 2016-03-06
Divine! x 50 xp 313 478 65.48% 4.27
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3420921
 2016-03-15
2.5D maze x 50 xp 317 947 33.47% 4.11
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40201172
 2016-03-23 BFSGraphsPathfinding
Othello x 50 xp 262 352 74.43% 4.36
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3017620
 2016-03-24 ConditionsStrings
Minesweeper x 50 xp 348 826 +1 42.13% 4.58
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6523430
 2016-04-06
Bulls and Cows x 50 xp 357 966 36.96% 4.59
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6217502
 2016-04-06
Text alignment x 50 xp 1372 +1 1701 +1 80.66% 4.24
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64552140
 2016-04-07
Snake encoding x 50 xp 943 1216 77.55% 4.43
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60361101
 2016-04-12
ASCII ART : Glass Stacking x 50 xp 1215 1686 72.06% 3.97
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54383084
 2016-04-18
Sum of divisors x 50 xp 1883 2767 68.05% 4.27
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115891948
 2016-05-29 ArithmeticTricky
The Urinal Problem x 50 xp 851 1109 76.74% 4.19
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51382221
 2016-06-01
Ancestors & Descendants x 50 xp 1094 1423 76.88% 4.35
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69411721
 2016-06-06
CGFunge interpreter x 50 xp 704 +1 924 +1 76.19% 4.60
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90281010
 2016-06-08
Anagrams x 50 xp 851 1203 70.74% 4.18
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46341143
 2016-06-08 CryptographyString manipulation
The experience for creating puzzles x 50 xp 961 +1 1187 +1 80.96% 3.95
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676139115
 2016-07-08
Elementary cellular automaton x 50 xp 793 957 82.86% 4.46
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101511440
 2016-07-08
Simple fraction to mixed number x 50 xp 1103 1493 73.88% 4.21
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62421843
 2016-07-13
Queneau Numbers x 50 xp 473 533 88.74% 4.14
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28271121
 2016-07-13
Quaternion Multiplication x 50 xp 461 733 62.89% 4.53
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6728711
 2016-07-14 Algebra
Army ants x 50 xp 696 914 76.15% 4.30
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48351610
 2016-08-16
Carmichael numbers x 50 xp 804 1238 64.94% 3.86
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6741291212
 2016-08-26 ArithmeticRecursion
OneWay City x 50 xp 382 829 46.08% 4.31
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5923953
 2016-08-31 Combinatorics
Langton's ant x 50 xp 721 982 73.42% 4.32
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84572013
 2016-09-05
Divide the factorial x 50 xp 624 1489 41.91% 4.30
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75291255
 2016-09-06 ArithmeticPrimes
Reversed Look-and-say x 50 xp 492 795 +1 61.89% 4.33
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5437561
 2016-09-14 LoopsString manipulation
Near-Palindromes x 50 xp 307 436 70.41% 4.32
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4520832
 2016-09-19 Brute-forcePalindrome
Texas Holdem x 50 xp 242 544 +1 44.49% 4.15
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3518572
 2016-09-21 Conditions
Brackets, Enhanced Edition x 50 xp 510 772 66.06% 4.33
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65401422
 2016-10-22
2×2×2 Rubik’s cube movements x 50 xp 234 568 41.20% 4.14
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39171134
 2016-10-28 Group theoryListsRubik’s cubeStrings
Factorial vs Exponential x 50 xp 487 +1 961 +1 50.68% 4.37
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83262132
 2016-11-02 Mathematics
Advanced Tree x 50 xp 201 497 40.44% 3.99
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31231082
 2016-11-02
Gravity Tumbler x 50 xp 2358 3309 71.26% 4.46
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2961794522
 2016-11-05
Number of letters in a number - Binary x 50 xp 1257 1643 76.51% 4.41
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1791023062
 2016-11-09
Next car license plate ? x 50 xp 834 1131 73.74% 4.46
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132871621
 2016-11-11
Horse-hyperracing Hyperduals x 50 xp 178 275 64.73% 4.37
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358323
 2016-11-17
Folding Paper x 50 xp 1378 1716 80.30% 4.49
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2171392810
 2016-11-24
Micro Assembly x 50 xp 1556 +1 1838 84.66% 4.73
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319831410
 2016-11-25
Cards castle x 50 xp 1187 1560 76.09% 4.35
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1541153631
 2016-12-08
Magic stones x 50 xp 1540 2180 +1 70.64% 4.36
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1731223372
 2016-12-14
Sandpile addition x 50 xp 1268 1618 78.37% 4.31
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1541234630
 2017-03-08
Hidden word x 50 xp 932 2133 +2 43.69% 4.32
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133812394
 2017-05-07 ConditionsStrings
Bruce Lee x 50 xp 1043 1336 78.07% 4.33
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1311002715
 2017-06-07 Encoding
Numeral system x 50 xp 540 777 69.50% 4.23
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70502242
 2017-09-02
1010(1) x 50 xp 309 371 83.29% 4.03
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27281142
 2017-09-24
A-star exercise x 50 xp 293 530 55.28% 4.40
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5223632
 2017-10-01 A*Heuristic searchPathfinding
Minimax exercise x 50 xp 314 588 53.40% 4.52
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6525422
 2017-10-07 Minimax
Monthly System x 50 xp 341 397 85.89% 4.00
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361910102
 2017-10-16
Porcupine Fever x 50 xp 1134 +5 1696 +11 66.86% 4.15
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1391005488
 2017-10-23 Loops
Magic Square x 50 xp 605 750 80.67% 3.92
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52463466
 2017-10-28
Count of Primes in a number grid x 50 xp 413 606 68.15% 4.18
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55332033
 2017-10-29 2D arrayPrimes
Gravity Centrifuge x 50 xp 136 166 81.93% 4.32
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239122
 2017-11-08
Find the replacement x 50 xp 331 408 81.13% 4.01
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40281237
 2017-11-22
2048 scores x 50 xp 154 295 52.20% 4.06
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2513652
 2017-12-09 Recursion
Plight Of The Fellowship Of The Ring x 50 xp 174 305 57.05% 4.15
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2914524
 2017-12-15 GraphsPathfinding
Bingo! x 50 xp 367 539 68.09% 4.30
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62302320
 2017-12-17
Gravity Centrifuge Tuning x 50 xp 151 195 77.44% 4.40
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346223
 2017-12-19
The Grand Festival - I x 50 xp 410 824 +1 49.76% 4.70
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8819610
 2017-12-31 Dynamic programmingRecursion
Box of Cigars x 50 xp 299 449 66.59% 4.42
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4321711
 2018-01-06 MathematicsSequences
Polydivisible number x 50 xp 224 303 73.93% 3.74
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24241366
 2018-01-09
The Grand Festival - II x 50 xp 234 289 80.97% 4.46
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4212313
 2018-01-21 Dynamic programmingRecursion
Format string validation x 50 xp 237 339 69.91% 4.02
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25111422
 2018-01-21
Flood fill Example x 50 xp 379 637 59.50% 4.22
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65381327
 2018-02-20 BFSFlood fill
Paper labyrinth x 50 xp 286 489 58.49% 4.54
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5220402
 2018-05-09 BFSCompressionGraphsPathfindingStrings
Brackets, Ultimate Edition x 50 xp 173 298 58.05% 4.40
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2813520
 2018-06-06
De-FizzBuzzer x 50 xp 196 +1 269 +1 72.86% 4.18
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2716831
 2018-06-07
Bag of Balls x 50 xp 178 288 61.81% 4.04
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2513316
 2018-06-08 MathematicsProbability
Simplified Monopoly™ Turns Prediction x 50 xp 194 236 82.20% 4.43
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2418400
 2018-06-17
Bulgarian solitaire x 50 xp 517 704 73.44% 4.36
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72471621
 2018-06-26
Trits (Balanced Ternary Computing) x 50 xp 188 215 87.44% 4.31
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2221401
 2018-06-26 MathematicsParsingPattern recognition
Depot organization x 50 xp 204 551 37.02% 4.56
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3816500
 2018-06-26 Brute-forceTiling
The Optimal Urinal Problem x 50 xp 269 552 48.73% 4.64
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4813410
 2018-07-01
Brackets, Extended Edition x 50 xp 649 956 67.89% 4.49
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108511440
 2018-07-18
Counting Squares on Pegs x 50 xp 308 730 42.19% 4.36
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5126704
 2018-08-14 Geometry
Kaprekar's routine x 50 xp 181 207 87.44% 4.37
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2421301
 2018-09-17
Maximum sub-sequence x 50 xp 260 302 86.09% 4.40
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2818510
 2018-09-19
Remainder Fantasy x 50 xp 103 133 77.44% 4.24
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193412
 2018-09-22 Remainder Theorem
Locked in gear x 50 xp 358 713 50.21% 4.56
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8130612
 2018-09-23 BFSDFSGraphs
Short accounts make long friends x 50 xp 166 351 47.29% 4.40
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3017411
 2018-09-23
Dice probability calculator x 50 xp 537 1253 +2 42.86% 4.71
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13232421
 2018-09-28
Number of paths between 2 points x 50 xp 533 +1 759 +1 70.22% 4.42
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76471121
 2018-09-29 2D arrayDynamic programmingPathfinding
Enigma - 3 rotors without plugboard x 50 xp 89 121 73.55% 3.74
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137443
 2018-10-15 Cryptography
Guessing n Cheating x 50 xp 761 1443 +1 52.74% 3.48
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7165392236
 2018-10-17 ConditionsLogicSets
HTML table cell split x 50 xp 97 184 52.72% 3.92
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124531
 2018-10-18 Topology
Straddling Checkerboard Cryptography x 50 xp 96 129 74.42% 3.97
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157404
 2018-10-22 Cryptography
Digit sum successor x 50 xp 413 1042 39.64% 4.30
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74401182
 2018-10-25 Mathematics
2-player game on a calculator x 50 xp 196 470 41.70% 4.55
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4614402
 2018-11-08 Dynamic programming
Guessing digits x 50 xp 94 289 32.53% 3.26
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1561610
 2018-11-10 Guessing digitsLogic
Equalizing arrays x 50 xp 73 140 +1 52.14% 4.30
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154202
 2018-12-06 Arrays
IP mask calculating x 50 xp 187 199 93.97% 4.04
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24111630
 2018-12-17
Dynamic sorting x 50 xp 321 614 52.28% 4.46
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6023921
 2018-12-21 SortingString manipulation
Green Valleys x 50 xp 121 138 87.68% 4.40
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2412700
 2019-01-18
Goro Want Chocolate x 50 xp 307 542 +1 56.64% 4.60
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5621600
 2019-01-29 ChocolateDynamic programming
Domino Puzzle x 50 xp 79 105 75.24% 4.27
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188520
 2019-02-12 dominograph traversal
EUROPEAN RUGBY CHAMPIONS CUP RANKING x 50 xp 70 114 61.40% 3.63
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95841
 2019-02-21
Find the winning strategy x 50 xp 121 208 58.17% 4.62
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327030
 2019-03-06 Nim game
Go competition x 50 xp 193 457 42.23% 4.30
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3528811
 2019-03-21 Flood fillRecursion
Barcode scanner x 50 xp 228 372 61.29% 4.26
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4123742
 2019-03-28 barcodedecoder
Fishing With A Stick x 50 xp 73 132 55.30% 3.79
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125741
 2019-04-01 String manipulationStrings
Elliptic curve cryptography x 50 xp 49 72 68.06% 4.00
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93112
 2019-04-08 CryptographyDouble-and-addElliptic CurveModular calculus
Criminal x 50 xp 88 151 58.28% 3.74
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149534
 2019-04-08 ListsStrings
Rearrange string to two numbers x 50 xp 131 515 25.44% 4.16
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1515520
 2019-04-16 Greedy algorithmsString manipulation
Seam Carving x 50 xp 106 +1 235 +1 45.11% 4.57
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334302
 2019-04-21 Dynamic programmingImage processing
Robbery optimisation x 50 xp 461 +1 983 +1 46.90% 4.50
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96441031
 2019-04-22 Dynamic programmingMathematics
Palindromic Decomposition x 50 xp 90 356 25.28% 4.20
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247513
 2019-04-25 Strings
Length of Syracuse Conjecture Sequence x 50 xp 191 215 88.84% 4.32
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3218702
 2019-04-25 MemoizationSequences
Shikaku Solver x 50 xp 95 314 30.25% 4.79
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324200
 2019-05-02
Regular polygons x 50 xp 201 356 56.46% 4.40
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4313423
 2019-05-09 Fermat primesGauss–Wantzel theorem
Road Trip x 50 xp 182 493 36.92% 4.49
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4321610
 2019-06-03 Optimization
Jumping Frogs x 50 xp 84 128 65.62% 4.39
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198600
 2019-06-14 AlgebraBezout's identity
Forest Fire x 50 xp 215 691 31.11% 4.48
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5320422
 2019-06-17 2D arrayGreedy algorithmsLoops
Sudoku Solver x 50 xp 447 +5 1005 +12 44.48% 4.55
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99231014
 2019-06-28 Backtracking
Knights Jam x 50 xp 231 469 49.25% 4.55
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5020501
 2019-06-29 chessCombination puzzleFifteen puzzle
Plague, Jr x 50 xp 656 1364 48.09% 4.29
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113451888
 2019-06-30 Graph theoryTrees
Smooth Factory x 50 xp 46 66 69.70% 4.14
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124411
 2019-07-11 FruitNumber theoryReading the statementSmoothStreams
Detective Pikaptcha EP3 x 50 xp 237 +1 368 +2 64.40% 4.09
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389755
 2019-07-25 mazeMobiusMoebiusSimulation
Battleship x 50 xp 102 +1 273 +1 37.36% 4.31
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2312430
 2019-08-01 2D arrayConditions
Surakarta x 50 xp 71 325 +3 21.85% 4.35
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187510
 2019-08-13 BacktrackingLoopsRecursion
Identifying data structure x 50 xp 114 175 65.14% 4.49
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2311201
 2019-08-19 Priority QueueQueueStack
A story to go in circles x 50 xp 162 274 59.12% 3.63
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21151148
 2019-08-20
Fun with Set theory x 50 xp 95 156 60.90% 4.44
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255411
 2019-08-21 ParsingSet theory
Dice galaxy x 50 xp 53 76 69.74% 3.58
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105443
 2019-09-03
A Coin Guessing Game x 50 xp 69 83 83.13% 4.36
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174202
 2019-09-06
Let's Go To The Cinema! x 50 xp 46 65 70.77% 4.00
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112502
 2019-09-09 RecursionSimulationStack
Windmill problem x 50 xp 81 204 39.71% 4.59
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245120
 2019-09-17 angleMemoizationrotationwindmill
Photo Booth Transformation x 50 xp 194 357 +1 54.34% 4.67
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4414300
 2019-09-21 Image processingMathematicsPermutations
Light Bulbs x 50 xp 211 502 42.03% 4.69
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5914500
 2019-09-27 💡💡💡💡💡
Fair Numbering x 50 xp 406 +1 837 48.51% 4.54
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9433922
 2019-10-19 Digit countsIntervals
Rational Number Tree x 50 xp 258 352 73.30% 4.68
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7014610
 2019-11-03 Binary TreeRational Numbers
Chained Matrix Products x 50 xp 54 79 68.35% 4.38
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126210
 2020-01-05 ComplexityDynamic programmingMatrix productOptimization
Bit count to limit x 50 xp 87 126 69.05% 4.21
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206403
 2020-01-22 Mathematics
Hacking at RobberCity x 50 xp 80 99 80.81% 4.30
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175302
 2020-01-30 CipherCryptographyXOR
Halting sequences x 50 xp 63 105 60.00% 3.79
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89322
 2020-01-30 Mathematics
Binary Search Tree Traversal x 50 xp 124 173 71.68% 4.45
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2411410
 2020-02-06 Binary Treegraph traversal
3×N Tiling x 50 xp 62 192 32.29% 4.33
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154320
 2020-02-08 Dynamic programmingTiling
Propositions in Frege’s ideography x 50 xp 34 61 55.74% 4.50
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63100
 2020-03-23 Ascii ArtGraphsLogic
Rock-Paper-Scissors War x 50 xp 247 403 61.29% 4.56
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5927311
 2020-04-20 Rock Paper Scissors
Playfair Cipher x 50 xp 71 88 80.68% 4.00
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1011402
 2020-04-24 Cryptography
Blood Types x 50 xp 168 253 66.40% 4.19
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30241130
 2020-04-25 Blood TypesGenetics
Futoshiki Solver x 50 xp 184 +1 474 +1 38.82% 4.54
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5517213
 2020-05-18 Backtracking
Crossword x 50 xp 156 442 35.29% 4.56
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4215401
 2020-05-27
The lost child.Episode-1 x 50 xp 678 +1 1142 59.37% 4.45
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136601246
 2020-07-02 2D arrayBFSPathfinding
Duck Hunt x 50 xp 80 92 86.96% 4.24
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228431
 2020-07-28
Source Code Analyser x 50 xp 35 63 55.56% 3.85
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72112
 2020-07-31 ParsingString manipulation
Huffman Code x 50 xp 256 403 63.52% 4.49
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5223530
 2020-08-01 CompressionGreedy algorithmsTrees
What the Brainfuck ! x 50 xp 464 660 +1 70.30% 4.58
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11638841
 2020-08-01 brainfuckinterpreter
The Polish Dictionary x 50 xp 40 53 75.47% 3.88
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74221
 2020-08-02 Reverse Polish NotationStack
Battle Tower x 50 xp 74 +7 280 +26 26.43% 4.35
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219112
 2020-08-11 GraphsGreedy algorithms
Target Firing x 50 xp 421 +4 1059 +7 39.75% 4.55
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11133933
 2020-08-18 ListsLoops
Smile! Frieze! Cheese! x 50 xp 32 44 72.73% 4.20
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62101
 2020-08-25 GeometryMathematicsPattern recognitionTransformations
Escaping the cat x 50 xp 171 +1 824 +1 20.75% 4.46
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6129821
 2020-08-28 DistancesTrigonometry
English length units conversion x 50 xp 42 60 70.00% 4.43
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144201
 2020-09-01 BFSGraphsUnit propagation
Particle Detection with Cloud Chamber x 50 xp 25 38 65.79% 4.62
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93100
 2020-09-17 Ascii ArtGradient descentLeast-squaresPhysicsStrings
Virus spreading and clustering x 50 xp 35 39 89.74% 4.23
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73210
 2020-09-17 clustering
Find the liars x 50 xp 28 30 93.33% 3.54
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45103
 2020-09-21 LogicTrees
Minesweeper x 50 xp 36 144 25.00% 4.39
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155111
 2020-10-21
The lost files x 50 xp 253 488 51.84% 4.51
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6829531
 2020-11-03 GeometryGraph theorygraph traversalTopology
Assignments are boring x 50 xp 30 35 85.71% 3.90
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42310
 2020-11-06 Counting sortLogical problem
Cistercian Numerals x 50 xp 28 +1 43 65.12% 2.60
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52148
 2020-11-17 EncodingString manipulation
Rod cutting problem x 50 xp 238 +3 488 +4 48.77% 4.32
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56361113
 2020-11-20 Dynamic programmingMemoization
Data compression 1 x 50 xp 24 30 80.00% 2.25
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30036
 2020-12-12 Data compressionRegular expressions
Inversion count x 50 xp 28 +1 40 70.00% 3.75
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63511
 2020-12-24 ArraysSorting
Paving with bricks x 50 xp 22 32 68.75% 4.10
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61120
 2021-01-06

Hard

Name Community Reward Solved by Diff. Attempted by Diff. Success ratio Feedbacks Creation date Tags
Skynet Revolution - Episode 2 250 xp 4932 +3 17375 +3 28.39% 4.79
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8361042396
 2014-07-23 GraphsPathfinding
The Bridge 375 xp 2270 9155 +2 24.80% 4.65
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281651935
 2014-07-23 DFSBacktracking
The Labyrinth 250 xp 4972 +2 27372 +6 18.16% 4.72
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77114029612
 2014-07-23 BFSPathfinding
Power of Thor - Episode 2 250 xp 1091 5874 +2 18.57% 4.51
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10638952
 2014-07-23 BarycentersPathfinding
Super Computer 250 xp 3351 4874 68.75% 4.42
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2001023174
 2014-07-23 Greedy algorithmsScheduling
Roller Coaster 375 xp 4569 +1 6784 +2 67.35% 4.59
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3791512933
 2014-07-23 Dynamic programmingSimulation
CGX Formatter 250 xp 2841 3913 72.60% 4.37
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158773644
 2014-07-23 ParsingStrings
TAN Network 250 xp 1724 +1 2656 64.91% 4.34
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105482154
 2014-07-23 DistancesGraphsPathfindingTrigonometry
Genome Sequencing 250 xp 2850 4051 70.35% 4.39
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157682647
 2014-07-23 PermutationsStrings
Surface 250 xp 3397 4465 +1 76.08% 4.59
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214901522
 2014-07-23 BFSFlood fillMemoizationRecursion
Bender - Episode 2 250 xp 2397 3380 70.92% 4.59
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153591601
 2014-07-23 Dynamic programmingMemoizationPathfindingRecursion
Bender - Episode 3 250 xp 1581 2738 +1 57.74% 4.23
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69392062
 2014-07-23 Regression analysis
The Last Crusade - Episode 2 250 xp 941 3740 +1 25.16% 4.61
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9926423
 2014-07-23 BacktrackingPathfinding
Vox Codei - Episode 1 250 xp 1692 4845 34.92% 4.67
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16955512
 2014-09-27 DFSBrute-forceSimulation
Don't Panic - Episode 2 250 xp 1027 +1 7136 +2 14.39% 4.66
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17848633
 2014-10-25 Pathfinding
There is no Spoon - Episode 2 250 xp 1057 +1 6648 15.90% 4.71
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15927623
 2015-04-25 BacktrackingRecursion
Winamax Sponsored Contest 250 xp 1090 6741 +4 16.17% 4.64
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6919411
 2016-11-18 BacktrackingRecursion
Staircases x 50 xp 325 764 42.54% 4.52
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4113402
 2016-02-23
Cryptarithm x 50 xp 294 607 48.43% 4.61
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3513210
 2016-02-23
Mystery sums x 50 xp 473 1034 45.74% 4.30
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4433940
 2016-02-23
Alternative vote x 50 xp 408 687 59.39% 4.08
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4029827
 2016-02-23
Mini sudoku solver x 50 xp 634 908 69.82% 4.42
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6231940
 2016-02-23
Test before Validate! x 50 xp 252 584 43.15% 3.09
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1910111016
 2016-02-23
Castle Siege x 50 xp 282 416 67.79% 4.45
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3310620
 2016-02-23
TXT2HTML x 50 xp 357 478 74.69% 4.14
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187920
 2016-02-23
Boggle x 50 xp 460 856 53.74% 4.48
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5934421
 2016-02-23
Connect four x 50 xp 308 485 63.51% 4.31
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2012610
 2016-03-04
Spreadsheet Labels x 50 xp 586 +1 1093 +1 53.61% 4.35
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60381131
 2016-03-09
Candies x 50 xp 534 816 65.44% 4.15
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38351830
 2016-03-14
Electrical grid x 50 xp 234 486 48.15% 4.38
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2911611
 2016-03-22
Binary Permutations x 50 xp 261 552 47.28% 4.43
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389920
 2016-03-26
Tetris x 50 xp 166 259 64.09% 3.89
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1311831
 2016-03-27
Erdős Number x 50 xp 176 246 71.54% 4.34
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168410
 2016-03-28
Disks intersection x 50 xp 299 409 73.11% 3.97
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1361210
 2016-03-31
Simplify Selection Ranges x 50 xp 1765 2553 69.13% 4.09
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50612442
 2016-04-06
The Holy Grail x 50 xp 445 700 63.57% 4.34
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53421220
 2016-04-08
Universe Conquest x 50 xp 117 184 63.59% 4.33
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92400
 2016-04-12
7-segment display x 50 xp 778 1350 57.63% 3.98
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50271749
 2016-04-12
Chess cavalry x 50 xp 578 852 67.84% 4.63
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4114400
 2016-05-14
Simple safecracking x 50 xp 1389 +1 2154 +1 64.48% 4.22
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97512467
 2016-07-05
Vortex x 50 xp 364 705 51.63% 4.43
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53341100
 2016-07-19
Fractal Carpet x 50 xp 348 587 59.28% 4.63
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3710310
 2016-07-24
Chess moves on FEN position x 50 xp 272 426 63.85% 4.31
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226421
 2016-07-27
Einstein's riddle solver x 50 xp 150 542 27.68% 4.70
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349001
 2016-08-08
The greatest number x 50 xp 3067 5033 60.94% 3.88
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1601941163214
 2016-08-09
KGood x 50 xp 534 916 58.30% 4.22
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51561313
 2016-08-10
Egyptian multiplication x 50 xp 660 954 69.18% 3.75
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26272146
 2016-08-12
Elevator x 50 xp 1039 2272 45.73% 4.27
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91562462
 2016-08-31
Drawing Polygons x 50 xp 378 568 66.55% 4.12
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3634943
 2016-08-31
Hill Notation and Hill Order x 50 xp 235 474 49.58% 4.28
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168230
 2016-09-01
The Highest Building x 50 xp 340 522 +1 65.13% 3.92
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21131251
 2016-09-02
The Beautiful sequence x 50 xp 211 359 58.77% 4.35
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255412
 2016-09-13
Google Interview - The Two Egg Problem x 50 xp 1757 2991 +3 58.74% 4.25
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17563331810
 2016-09-30
Hangman x 50 xp 639 924 69.16% 4.22
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72472922
 2016-10-21
The Burglar's Dilemna x 50 xp 156 236 66.10% 4.76
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338100
 2016-10-26
Pascal Trapezoid x 50 xp 116 192 60.42% 4.27
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137600
 2016-10-29
Zergling rush x 50 xp 502 875 +1 57.37% 4.63
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11040810
 2016-10-29
Misère Nim x 50 xp 131 361 36.29% 4.49
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2211400
 2016-11-05
Inertia ride x 50 xp 362 675 53.63% 4.16
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52261952
 2016-11-05
Laser and mirrors x 50 xp 308 557 55.30% 4.52
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5528411
 2016-11-13
Kolakoski Sequence x 50 xp 674 1053 64.01% 4.40
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93581821
 2016-11-22
To Sky's Edge x 50 xp 323 516 62.60% 4.42
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50321100
 2016-12-18
Execution Circle x 50 xp 222 345 64.35% 4.41
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3211530
 2016-12-19
The max surface box x 50 xp 490 932 52.58% 4.16
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52432322
 2016-12-20
Timer for Clash of Code x 50 xp 598 910 65.71% 3.81
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444730116
 2016-12-25
X egg problem x 50 xp 171 455 37.58% 4.62
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349310
 2016-12-26
Hit the road x 50 xp 174 310 56.13% 4.33
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2819203
 2017-01-10
Wall Street x 50 xp 116 181 64.09% 3.55
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114662
 2017-01-15
Rocket mice x 50 xp 79 122 64.75% 4.16
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113311
 2017-02-24
Hanoi tower x 50 xp 383 698 54.87% 4.23
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50431612
 2017-02-25
n Queens x 50 xp 445 807 55.14% 4.13
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54271882
 2017-03-23
Turing machine x 50 xp 550 903 60.91% 4.61
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10643810
 2017-03-23
Binary neural network - Part 1 x 50 xp 130 511 25.44% 4.45
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2810501
 2017-03-24 Neural network
Levenshtein distance x 50 xp 445 788 56.47% 4.29
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60301741
 2017-04-10
Cheat Solving x 50 xp 98 152 +1 64.47% 4.46
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193130
 2017-04-10
Highest truncated pyramid x 50 xp 695 1381 50.33% 4.10
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996737144
 2017-04-15
The hungry duck - part 1 x 50 xp 871 1435 60.70% 4.33
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105632642
 2017-04-27
The hungry duck - part 2 x 50 xp 656 932 70.39% 4.52
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107371521
 2017-04-28
Code your own Automaton2000, step 1 x 50 xp 137 +1 210 +1 65.24% 4.27
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2311250
 2017-05-04
Longest Palindrome x 50 xp 595 1464 40.64% 4.39
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95552320
 2017-05-29 PalindromeStrings
Parsing context-free grammar x 50 xp 96 294 32.65% 4.39
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188410
 2017-07-06
Order of Oopserations! x 50 xp 177 258 68.60% 4.30
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2522411
 2017-07-25
Apple tree x 50 xp 568 852 +1 66.67% 4.56
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108481020
 2017-10-17
Simple CPU Emulation 1 x 50 xp 486 707 68.74% 4.20
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79402274
 2017-10-22
Paper-folding curve x 50 xp 180 312 57.69% 4.70
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389300
 2017-10-26
Max Rect x 50 xp 218 499 43.69% 4.47
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4811821
 2017-10-27 Dynamic programming
Monte Carlo Tree Search exercise x 50 xp 117 194 60.31% 4.37
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2112320
 2017-11-27 Monte Carlo tree search
Magic count of numbers x 50 xp 221 +1 413 +1 53.51% 4.68
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5516400
 2017-12-17
Musical Intervals x 50 xp 99 131 75.57% 3.82
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118351
 2018-01-04
Expand the polynomial x 50 xp 523 1202 43.51% 4.08
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903919913
 2018-01-08 AlgebraMathematicsOutput formattingParsing
Dominoes solver x 50 xp 107 208 51.44% 4.23
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195303
 2018-02-21
Symbolic system of equations x 50 xp 74 94 78.72% 4.14
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73310
 2018-06-25 Cycle detectionGraphsRewriting
Horn-SAT solver x 50 xp 81 107 75.70% 4.30
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142202
 2018-06-26 DIMACSHorn-SATLogicSatisfiabilityUnit propagation
The Empire Enigma x 50 xp 161 +1 330 +1 48.79% 4.52
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347601
 2018-06-28 Cryptography
Factorials of primes decomposition x 50 xp 139 301 46.18% 4.63
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406311
 2018-07-01 ArithmeticPrimes
The Total is Right - Weird edition x 50 xp 111 283 39.22% 4.53
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235220
 2018-07-03 ArithmeticBrute-force
Breakout x 50 xp 71 220 32.27% 4.47
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111210
 2018-07-16
Dumbbells solver x 50 xp 105 255 41.18% 4.59
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196110
 2018-08-24
Sum of odd x 50 xp 131 178 73.60% 4.29
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2512104
 2018-08-25
Harmless Rooks x 50 xp 68 296 22.97% 4.45
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143201
 2018-10-09 chessOptimization
Neighbor-Sum Grids x 50 xp 68 320 21.25% 4.39
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131301
 2018-10-11 BacktrackingBrute-force
The Balanced Centrifuge Problem x 50 xp 75 265 28.30% 4.50
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184310
 2018-12-22 Dynamic programmingPrimes
Her Majesty's well shared secret x 50 xp 61 210 29.05% 4.71
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216100
 2019-02-02 CryptographyInterpolationMathematicsPolynomialsSecret sharing
Basic Decision Tree - 1 x 50 xp 54 137 39.42% 3.60
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74522
 2019-02-18 Machine learning
11-puzzle x 50 xp 81 589 +2 13.75% 4.78
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425101
 2019-03-29 A*Pathfinding
Closest Number x 50 xp 91 540 16.85% 4.42
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3810612
 2019-03-30
Discrete Log Problem x 50 xp 49 88 55.68% 4.26
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114220
 2019-04-22 CryptographyModular calculus
Nonogram inversor x 50 xp 58 246 +1 23.58% 4.74
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254200
 2019-06-23
Basic Decision Tree - 2 x 50 xp 16 27 59.26% 3.14
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20230
 2019-06-23 Machine learning
Detective Pikaptcha EP4 x 50 xp 147 238 +2 61.76% 4.52
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314520
 2019-07-25 3DcubemazeSimulation
Cloudy Weather x 50 xp 17 54 31.48% 4.70
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81100
 2019-10-18 CoordinatesPathfinding
Big Bang Theory - Sheldon's Array Puzzle x 50 xp 22 37 59.46% 3.33
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71205
 2019-12-02 ArraysDynamic programmingOptimization
Mars Colonization x 50 xp 120 314 38.22% 4.67
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422103
 2019-12-20 Graphs
A Game of Go x 50 xp 156 380 41.05% 4.58
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4917230
 2020-05-15 2D arrayFlood fill
Map Colorations x 50 xp 16 26 61.54% 4.80
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41000
 2020-05-29 CombinatoricsGraph theory
Bailey–Borwein–Plouffe Pi x 50 xp 24 38 63.16% 4.22
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43200
 2020-08-04 Number theoryPi
Chess board analyzer x 50 xp 221 +2 696 +2 31.75% 4.61
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7220810
 2020-08-07 2D arraychessLoopsStrings
Breaking Apart x 50 xp 25 30 83.33% 3.67
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32220
 2020-08-24 Greedy algorithmsLine breaksString manipulation
Jump Point Search - Preprocessing x 50 xp 36 54 66.67% 4.44
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122011
 2020-08-31 A*Jump Point SearchPathfinding
Encounter surface x 50 xp 26 50 52.00% 4.75
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93000
 2020-09-08 GeometryMathematics
Thomas and the Freight Cars x 50 xp 37 69 +1 53.62% 4.57
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94100
 2020-09-21 Dynamic programmingSorting
Sokoban x 50 xp 11 70 +1 15.71% 4.67
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71100
 2020-10-02 BFSmazePathfinding
Doubly solved Rubik's cube x 50 xp 14 34 41.18% 4.80
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41000
 2020-10-14 Group theoryPermutationsRubik's cube
Flower beds x 50 xp 17 26 65.38% 5.00
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100000
 2020-11-09 ArithmeticGeometryGrid
Jump Point Search - Runtime x 50 xp 19 35 54.29% 3.67
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42021
 2020-11-26 A*Jump Point SearchPathfinding
Obsolete Programming x 50 xp 33 41 80.49% 5.00
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140000
 2020-12-02
Nuggets numbers x 50 xp 23 40 +2 57.50% 4.43
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42100
 2021-01-01 ArithmeticConditions
🃏 FreeCell 🃏 x 50 xp 0 12 0.00% 3.00
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00100
 2021-01-06 CardsPatience
Kakuro Solver x 50 xp 8 10 80.00% 5.00
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40000
 2021-01-10 BacktrackingBrute-forceCombinatoricsGrid

Expert

Name Community Reward Solved by Diff. Attempted by Diff. Success ratio Feedbacks Creation date Tags
The Last Crusade - Episode 3 500 xp 433 4582 +2 9.45% 4.46
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7211635
 2014-07-23 BacktrackingPathfinding
The Resistance 500 xp 2308 +3 5965 +5 38.69% 4.61
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343952068
 2014-07-23 Dynamic programmingEncodingMemoizationRecursion
Music Scores 500 xp 1205 +1 2318 51.98% 4.65
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12331902
 2014-07-23 EncodingImage processingPattern recognition
Mars Lander - Episode 3 750 xp 1094 4658 +1 23.49% 4.70
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195211225
 2014-07-23 DistancesTrigonometry
Shadows of the Knight - Episode 2 750 xp 1727 +2 11775 +7 14.67% 4.61
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3196817611
 2014-08-10 Binary searchIntervals
Vox Codei - Episode 2 500 xp 369 1901 19.41% 4.89
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729000
 2014-09-29 DFSBrute-forcePattern recognitionSimulation
Nintendo Sponsored Contest 500 xp 462 +1 21477 +10 2.15% 4.51
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624624
 2015-02-03 Cryptography
Squares order x 50 xp 126 342 36.84% 4.40
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236330
 2016-03-10
Haunted Manor x 50 xp 106 410 25.85% 4.85
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352200
 2016-03-16
Recurring Decimals x 50 xp 725 +2 1803 +1 40.21% 4.50
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61261010
 2016-03-29
The barnyard x 50 xp 371 1106 33.54% 4.57
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3312310
 2016-04-15
Fill the square! x 50 xp 146 448 32.59% 4.69
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243101
 2016-04-21
The Lucky Number x 50 xp 308 1438 +1 21.42% 4.36
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5219624
 2016-05-10
Flood the World x 50 xp 92 385 23.90% 4.21
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127320
 2016-06-07
The Crime Scene x 50 xp 201 571 35.20% 4.74
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446201
 2016-07-18
The water jug riddle from Die Hard 3 x 50 xp 178 439 40.55% 4.39
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2310311
 2016-07-19
Heart of the City x 50 xp 205 829 24.73% 4.47
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263212
 2016-07-21
Sliding puzzle x 50 xp 196 +2 500 +1 39.20% 4.27
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2813830
 2016-08-15
Prime Transformations x 50 xp 177 542 32.66% 4.14
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2818343
 2016-08-25
Spy the Spies x 50 xp 107 438 24.43% 4.34
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169301
 2016-08-27
Unflood The World x 50 xp 288 583 49.40% 4.62
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6423202
 2016-08-31
CodinDice x 50 xp 90 348 +1 25.86% 4.65
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
195200
 2016-09-14
Chemical Equation Balancing x 50 xp 194 694 27.95% 4.50
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
4212530
 2016-10-31
Hourglass x 50 xp 103 222 46.40% 3.73
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
154662
 2016-11-14
Ticket to Ride: Europe x 50 xp 64 274 23.36% 4.69
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
222101
 2016-11-23 BacktrackingDynamic programmingOptimization
Xorandor x 50 xp 97 390 24.87% 4.53
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
257301
 2017-01-05
Binary neural network - Part 2 x 50 xp 106 264 40.15% 4.42
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
238311
 2017-03-30
Skylines x 50 xp 276 843 32.74% 3.93
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
36332154
 2017-04-10
Cubax Folding x 50 xp 70 250 28.00% 4.44
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
120310
 2017-05-07
The two piles difference x 50 xp 201 548 36.68% 4.39
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
3718630
 2017-05-10
Hitori solver x 50 xp 96 388 24.74% 4.45
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
1811101
 2017-07-07
Unfolding paper x 50 xp 126 401 31.42% 4.76
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
4010100
 2017-10-28
Dungeon Designer x 50 xp 97 263 36.88% 4.71
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
263020
 2017-11-30
Minimax Simple Example x 50 xp 100 352 28.41% 4.55
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
3311410
 2018-01-03
Completed Mahjong Hands x 50 xp 102 280 +1 36.43% 4.34
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
249122
 2018-03-10
High-rise buildings x 50 xp 88 292 30.14% 4.65
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
205001
 2018-05-26
CG Chat interpreter - Part 1 x 50 xp 61 93 65.59% 4.00
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
64301
 2018-07-16
Cross the lines x 50 xp 67 246 27.24% 4.88
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
160100
 2018-07-19 Graph theoryTopology
Breach x 50 xp 46 291 15.81% 3.97
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
175224
 2019-08-05 LogicParsingPattern recognitionReverse engineeringStrings
Space Maze x 50 xp 10 179 +1 5.59% 5.00
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
80000
 2019-12-03 mazePathfindingSimulation
When pigs fly x 50 xp 17 39 43.59% 4.50
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
52100
 2020-09-21 GraphsLogicParsing
Tiling by Squares x 50 xp 21 28 75.00% 4.73
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
83000
 2020-10-23

Codegolf

Name Community Solved by Diff. Nb. of solutions Diff. Feedbacks Creation date Tags
Don't Panic 6648 +3 12575 +3 4.43
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
40821160118
 2015-04-28 Conditions
Power of Thor 22912 +9 31929 +18 4.45
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
13776782052827
 2015-04-28 Conditions
Temperatures 12729 +8 17991 +9 4.38
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
9995552152120
 2016-01-28 ArraysConditionsLoops
Chuck Norris - Code Golf 2808 +2 4398 +5 4.43
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
35019046710
 2019-02-19 ConditionsEncodingLoopsstring

Optim

Name Community Solved by Diff. Attempted by Diff. Feedbacks Creation date Tags
Mars Lander 3284 +3 9936 +4 4.58
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
319992358
 2015-04-28 DistancesTrigonometry
Code of the Rings 4171 +2 9999 +3 4.62
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
4541264225
 2015-06-29 OptimizationPattern recognition
Code vs Zombies 5240 +6 18569 +16 4.66
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
95727847811
 2015-12-16 DistancesOptimizationSimulation
CodinGame Sponsored Contest 12796 +4 34666 +14 4.08
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
73818410669132
 2016-01-08 Reverse engineering
A*Craft 931 +1 1744 +1 4.56
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
10032732
 2018-10-23 OptimizationSimulation
Bender - Episode 4 x 41 862 +1 4.81
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
232010
 2019-02-10 OptimizationPathfinding
CGFunge Prime x 97 549 4.73
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
306001
 2019-07-29 CG FungePrimes
Number Shifting x 252 +1 560 +1 4.79
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
587210
 2020-01-08
Bulls and Cows 2 x 72 306 4.47
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
227102
 2020-03-03 Combinatorics
Search Race x 239 +1 706 4.57
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
8421442
 2020-05-21 Beam SearchGenetic AlgorithmSimulated AnnealingSimulation
SameGame x 256 +1 510 +1 4.71
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
6517201
 2020-08-12 Beam SearchFlood fillNRPASimulationTile-matching
2048 x 452 652 4.49
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
86161115
 2020-10-06 Beam SearchSimulation

Multi

Name Community Feedbacks Creation date Tags
Tron Battle 4.83
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
355301004
 2014-03-03 Flood fillMinimaxPathfinding
Game of Drones 4.63
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
131281032
 2014-04-07 DistancesResource management
Poker Chip Race 4.35
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
45191012
 2014-09-01 DistancesSimulation
Platinum Rift - Episode 1 4.47
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
5716523
 2014-09-02 Multi-agentPathfindingResource management
Platinum Rift - Episode 2 4.68
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
7519311
 2015-01-30 Multi-agentPathfindingResource management
Great escape 4.55
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
111291033
 2015-02-23 MinimaxPathfinding
Back to the Code 4.34
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
53171322
 2015-10-08 DistancesFlood fillSimulation
Coders Strike Back 4.78
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
2579303522243
 2016-04-14 DistancesMulti-agentNeural networkOptimizationTrigonometry
Smash The Code 4.25
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
67271853
 2016-05-26 DFSFlood fillSimulation
CodeBusters 4.82
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
19930320
 2016-07-07 DistancesMulti-agentResource managementState machine
Hypersonic 4.85
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
22229500
 2016-10-26 BFSDFSSimulation
Fantastic Bits 4.86
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
25922312
 2016-12-14 DistancesMulti-agentSimulationTrigonometry
Ghost in the Cell 4.83
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
41524638
 2017-03-07 GraphsResource management
Coders of the Caribbean 4.60
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
139311214
 2017-05-24 DistancesMulti-agentPathfinding
Wondev Woman 4.58
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
7629421
 2017-07-12 Flood fillMinimaxSimulation
Mean Max 4.50
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
115321026
 2017-12-06 Multi-agentSimulation
Code4Life 4.77
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
19829504
 2018-01-31 ConditionsState machine
Ultimate Tic-Tac-Toe 4.84
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
28823613
 2018-02-28 Monte Carlo tree searchMinimax
Botters of the Galaxy 4.14
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
44211381
 2018-03-21 Multi-agent
Code Royale 4.75
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
16724622
 2018-04-19 Resource management
Code of Kutulu 4.58
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
5711512
 2018-07-11 Flood fill
Legends of Code & Magic 4.75
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
15315623
 2018-09-12 Card games
Xmas Rush 4.82
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
578200
 2018-12-21 MinimaxPathfinding
Code a la Mode 4.81
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
815320
 2019-03-25 Coop GameState machine
Crystal Rush 4.67
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
555004
 2020-03-20 Multi-agentResource management
Ocean of Code 4.81
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
11611302
 2020-04-20
Spring Challenge 2020 4.81
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
22325441
 2020-05-18 2D arrayDistancesMulti-agentPathfinding
Fall Challenge 2020 4.76
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
251461011
 2020-11-23 BFSMonte Carlo tree searchgraph traversal
Vindinium x 4.76
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
266100
 2019-02-09 Flood fillMinimax
Langton s Ant x 4.68
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
183001
 2019-02-27 Monte Carlo tree search
Checkers x 4.55
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
161201
 2019-03-21
Yavalath x 4.80
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
181010
 2019-03-22 Monte Carlo tree searchMinimaxOpening Book
Cultist Wars x 4.83
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
51000
 2019-04-15 Bresenham's algorithmMinimax
Bit Runner 2048 x 4.75
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
181001
 2019-04-19 Genetic AlgorithmSimulation
Bandas x 4.74
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
145000
 2019-05-02
A Code of Ice And Fire x 4.87
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
874201
 2019-06-05
Oware Abapa x 4.62
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
254201
 2019-08-17
Breakthrough x 4.93
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
260100
 2019-11-01 Monte Carlo tree searchBitboardingMinimax
Paper soccer x 4.53
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
113001
 2019-11-02 MinimaxPathfinding
Onitama x 4.58
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
213002
 2019-11-29 Minimax
Tower Dereference x 4.20
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
80002
 2019-12-30 Resource managementSimulation
Twixt-PP x 4.57
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
112001
 2020-01-18
Coders of the Realm - 1v1 x 4.20
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
40001
 2020-02-14 2D arrayFlood fill
Coders of the Realm x 4.22
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
61101
 2020-02-16 2D arrayFlood fill
Tulips and Daisies x 4.92
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
111000
 2020-04-16 Monte Carlo tree searchMinimax
Yinsh x 5.00
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
50000
 2020-05-29 Monte Carlo tree searchMinimax
Othello x 4.50
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
61010
 2020-06-13 Monte Carlo tree searchBitboardingMinimax
Atari Go x 5.00
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
40000
 2020-07-29 Minimax
Dots and Boxes x 4.96
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
472000
 2020-08-17 Minimax
Atari Go 9x9 x 5.00
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
10000
 2020-08-22 Minimax
Penguins x 4.52
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
224102
 2020-09-28
Blocking x 4.29
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
100220
 2020-10-29 Monte Carlo tree searchMinimax
Chess x 5.00
★★★★★★★★★☆★★★☆☆★★☆☆☆★☆☆☆☆
20000
 2021-01-19 chess