| 2D array |
FUNDAMENTALS |
22 |
Sandpile addition 1010(1) Magic Square Count of Primes in a number grid Number of paths between 2 points Lumen Forest Fire Battleship Coders of the Realm - 1v1 Coders of the Realm TicTacToe Rock-Paper-Scissors War Sudoku Validator A Game of Go Spring Challenge 2020 The lost child.Episode-1 Chess board analyzer Dungeons and Maps Flip The Sign Reverse Minesweeper Custom Game of Life Can you save the forest - Episode 1 |
| 3D |
ADVANCED |
5 |
Detective Pikaptcha EP4 Blockout Let's make a cheap ASCII 3D engine! Dice Duel ASCII cube |
| 5% |
|
2 |
TryAngle Catch Dice Duel |
| A* |
ADVANCED |
4 |
A-star exercise 11-puzzle Jump Point Search - Preprocessing Jump Point Search - Runtime |
| Algebra |
FUNDAMENTALS |
3 |
Quaternion Multiplication Expand the polynomial Jumping Frogs |
| angle |
FUNDAMENTALS |
1 |
Windmill problem |
| Arithmetic |
FUNDAMENTALS |
18 |
Sum of divisors Simple fraction to mixed number Carmichael numbers Divide the factorial Balanced ternary computer: encode Execution Circle Highest truncated pyramid The River II. Magic count of numbers Polydivisible number De-FizzBuzzer ISBN Check digit Factorials of primes decomposition The Total is Right - Weird edition Flower beds Number derivation Nuggets numbers Divisibility of Fibonacci numbers sum |
| Arithmetics |
FUNDAMENTALS |
1 |
ANEO Sponsored Puzzle |
| Array forbidden |
|
1 |
Graffiti on the fence |
| Arrays |
FUNDAMENTALS |
17 |
Temperatures ASCII Art Stock Exchange Losses Temperatures Monday Tuesday Happy Days Simple Awalé Bingo! Pirate's treasure Equalizing arrays Rectangle Partition Big Bang Theory - Sheldon's Array Puzzle Rock Paper Scissors Lizard Spock Unique Prefixes Inversion count Nurikabe Fractal Image Recognition Binary image |
| ascii |
|
1 |
Hidden Messages In Images |
| Ascii Art |
INTERMEDIATE |
17 |
May the Triforce be with you! ASCII ART : Glass Stacking Vortex Self-driving car testing Cards castle Highest truncated pyramid Ghost Legs Propositions in Frege’s ideography Crossword 7-segment scanner Particle Detection with Cloud Chamber Mountain Map Let's make a cheap ASCII 3D engine! Mountain Map Convergence Longest Road ASCII cube Shadow Casting |
| Average |
FUNDAMENTALS |
1 |
Dolbear's Law |
| Backtracking |
ADVANCED |
11 |
The Bridge The Last Crusade - Episode 2 The Last Crusade - Episode 3 There is no Spoon - Episode 2 Winamax Sponsored Contest Ticket to Ride: Europe Neighbor-Sum Grids Sudoku Solver Surakarta Futoshiki Solver Kakuro Solver |
| Ballistics |
|
1 |
Legendary Archer Octavius |
| barcode |
INTERMEDIATE |
0 |
|
| Barycenters |
INTERMEDIATE |
1 |
Power of Thor - Episode 2 |
| Beam Search |
ADVANCED |
4 |
Search Race SameGame 2048 Can you save the forest - Episode 1 |
| Bezout's identity |
ADVANCED |
1 |
Jumping Frogs |
| BFS |
ADVANCED |
13 |
Skynet Revolution - Episode 1 The Labyrinth Surface 2.5D maze Hypersonic Flood fill Example Paper labyrinth Locked in gear The lost child.Episode-1 English length units conversion Sokoban Fall Challenge 2020 Cooperative Mate with Rook |
| Binary search |
ADVANCED |
3 |
Shadows of the Knight - Episode 1 Shadows of the Knight - Episode 2 Binary Extension |
| Binary Tree |
ADVANCED |
3 |
Rational Number Tree Binary Search Tree Traversal Tree Paths |
| Bitboarding |
ADVANCED |
4 |
Breakthrough Othello Clobber Amazons |
| bitwise |
|
1 |
Hidden Messages In Images |
| Blood Types |
|
1 |
Blood Types |
| brainfuck |
|
1 |
What the Brainfuck ! |
| Bresenham's algorithm |
ADVANCED |
1 |
Cultist Wars |
| Brute-force |
INTERMEDIATE |
9 |
Vox Codei - Episode 1 Vox Codei - Episode 2 Near-Palindromes Depot organization The Total is Right - Weird edition Neighbor-Sum Grids Hooch Clash Smooth! Kakuro Solver |
| Byte-pair |
|
1 |
Byte pair encoding |
| Card game |
|
0 |
|
| Card games |
|
1 |
Legends of Code & Magic |
| Cards |
|
1 |
🃏 FreeCell 🃏 |
| CG Funge |
|
1 |
CGFunge Prime |
| Check-digit |
FUNDAMENTALS |
3 |
ISBN Check digit Credit Card Verifier (Luhn’s algorithm) Barcode scanner |
| chess |
|
9 |
Harmless Rooks Rooks Movements Knights Jam Chess board analyzer Chess Is the King In Check? (Part 1) Cooperative Mate with Rook Is the King In Check? (Part 2) Adversarial Mate with Rook |
| Chocolate |
|
1 |
Goro Want Chocolate |
| cinematics |
|
1 |
Asteroids |
| Cipher |
ADVANCED |
1 |
Hacking at RobberCity |
| Classic board games |
|
0 |
|
| clustering |
|
1 |
Virus spreading and clustering |
| Collision Detection |
ADVANCED |
1 |
Darts |
| Combination puzzle |
ADVANCED |
1 |
Knights Jam |
| Combinations |
|
1 |
Kids Blocks |
| Combinatorics |
ADVANCED |
7 |
OneWay City Count as I count Bulls and Cows 2 Map Colorations Kakuro Solver if then else Prime Fractals in Pascal's Triangle |
| Complexity |
INTERMEDIATE |
1 |
Chained Matrix Products |
| Compression |
ADVANCED |
4 |
Ancestors & Descendants Paper labyrinth Huffman Code Byte pair encoding |
| Condition |
FUNDAMENTALS |
0 |
|
| Conditions |
FUNDAMENTALS |
44 |
Power of Thor - Episode 1 Temperatures Chuck Norris MIME Type The Last Crusade - Episode 1 Stock Exchange Losses Scrabble Mars Lander - Episode 1 Onboarding Don't Panic - Episode 1 Don't Panic Power of Thor Temperatures Othello Texas Holdem Monday Tuesday Happy Days Hidden word The River I. Simple Awalé Morellet’s random lines Code4Life Simplified Monopoly™ Turns Prediction Brackets, Extended Edition Ghost Legs Pirate's treasure Guessing n Cheating Rooks Movements The Dart 101 Chuck Norris - Code Golf Blowing Fuse Battleship Rock Paper Scissors Lizard Spock TicTacToe Rock-Paper-Scissors War Sudoku Validator 7-segment scanner Flip The Sign Nuggets numbers Nature of triangles if then else Is the King In Check? (Part 1) Fractal Image Recognition Custom Game of Life Is the King In Check? (Part 2) |
| Convolution |
|
1 |
Feature Extraction |
| Coop Game |
|
2 |
Code a la Mode Fireworks |
| Coordinates |
INTERMEDIATE |
4 |
Divine! Cloudy Weather Connect the Hyper-Dots The Mystic Rectangle |
| Counting sort |
|
1 |
Assignments are boring |
| Cryptography |
ADVANCED |
13 |
Nintendo Sponsored Contest Anagrams The Empire Enigma Encryption/Decryption of Enigma Machine Enigma - 3 rotors without plugboard Straddling Checkerboard Cryptography Her Majesty's well shared secret Elliptic curve cryptography Discrete Log Problem Hacking at RobberCity Playfair Cipher Decode the message SHA-256 Hash |
| cube |
|
1 |
Detective Pikaptcha EP4 |
| Cycle detection |
ADVANCED |
3 |
Symbolic system of equations Bulgarian solitaire Kaprekar's routine |
| Data compression |
|
2 |
Data compression 1 IPv6 Shortener |
| Data Structure |
|
1 |
Container Terminal |
| Data Types |
FUNDAMENTALS |
3 |
Happy Numbers Unit Fractions Parse SQL Queries |
| DataBases |
|
1 |
Parse SQL Queries |
| decoder |
INTERMEDIATE |
1 |
Prefix code |
| Dependency Graph |
INTERMEDIATE |
1 |
1D Spreadsheet |
| Depth first search |
ADVANCED |
1 |
Longest Road |
| DFA |
|
0 |
|
| DFS |
ADVANCED |
7 |
The Bridge Vox Codei - Episode 1 Vox Codei - Episode 2 Smash The Code Hypersonic orDer oF succeSsion Locked in gear |
| Digit counts |
FUNDAMENTALS |
1 |
Fair Numbering |
| DIMACS |
ADVANCED |
1 |
Horn-SAT solver |
| Diophantine Equation |
ADVANCED |
1 |
Hooch Clash |
| Disappointment |
|
1 |
TryAngle Catch |
| Distances |
INTERMEDIATE |
19 |
Game of Drones Defibrillators Mars Lander - Episode 2 Network Cabling TAN Network Mars Lander - Episode 3 Poker Chip Race Mars Lander Back to the Code Code vs Zombies Coders Strike Back CodeBusters Fantastic Bits Coders of the Caribbean Spring Challenge 2020 Escaping the cat 🏐 🏖 Beach Volleyball 🏐 🏖 Connect the Hyper-Dots The Mystic Rectangle |
| domino |
|
1 |
Domino Puzzle |
| Dot product |
INTERMEDIATE |
2 |
Dead men's shot Feature Extraction |
| Double-and-add |
|
1 |
Elliptic curve cryptography |
| Dynamic programming |
ADVANCED |
21 |
Roller Coaster Bender - Episode 2 The Resistance Ticket to Ride: Europe Parsing context-free grammar Max Rect The Grand Festival - I The Grand Festival - II Number of paths between 2 points 2-player game on a calculator The Balanced Centrifuge Problem Goro Want Chocolate Seam Carving Robbery optimisation Big Bang Theory - Sheldon's Array Puzzle Chained Matrix Products 3×N Tiling Thomas and the Freight Cars Rod cutting problem Ways to make change Prime Fractals in Pascal's Triangle |
| Elliptic Curve |
ADVANCED |
1 |
Elliptic curve cryptography |
| Encoding |
INTERMEDIATE |
11 |
Chuck Norris The Resistance Music Scores Bruce Lee Disordered First Contact Encryption/Decryption of Enigma Machine Chuck Norris - Code Golf Decode the message Cistercian Numerals Byte pair encoding Bijective Numeration |
| Error-correcting code |
|
1 |
Extended Hamming Codes |
| Exhaustive search |
INTERMEDIATE |
0 |
|
| Factoring |
INTERMEDIATE |
0 |
|
| Fermat primes |
ADVANCED |
1 |
Regular polygons |
| Fifteen puzzle |
|
1 |
Knights Jam |
| Flood fill |
ADVANCED |
14 |
Tron Battle Surface Back to the Code Smash The Code Wondev Woman Flood fill Example Code of Kutulu Vindinium Go competition Coders of the Realm - 1v1 Coders of the Realm A Game of Go SameGame 5D Chests |
| Formulas |
FUNDAMENTALS |
1 |
Dolbear's Law |
| Fractal |
|
2 |
What's so complex about Mandelbrot? Paper-folding curve |
| Fruit |
|
2 |
Smooth! Smooth Factory |
| Gauss–Wantzel theorem |
ADVANCED |
1 |
Regular polygons |
| Genetic Algorithm |
ADVANCED |
2 |
Bit Runner 2048 Search Race |
| Genetics |
ADVANCED |
1 |
Blood Types |
| Geolocation |
INTERMEDIATE |
1 |
Hello, World! |
| Geometry |
INTERMEDIATE |
14 |
Nature of quadrilaterals Apple tree Morellet’s random lines 1×1×1 Rubik’s cube movements Counting Squares on Pegs Darts Dead men's shot Smile! Frieze! Cheese! Encounter surface The lost files Flower beds Low Resolution: What's The Shape? Nature of triangles Connect the Hyper-Dots |
| Gradient descent |
|
1 |
Particle Detection with Cloud Chamber |
| Graph theory |
INTERMEDIATE |
4 |
Cross the lines Plague, Jr Map Colorations The lost files |
| graph traversal |
INTERMEDIATE |
4 |
Domino Puzzle Binary Search Tree Traversal The lost files Fall Challenge 2020 |
| Graphs |
INTERMEDIATE |
22 |
Skynet Revolution - Episode 1 Dwarfs standing on the shoulders of giants Skynet Revolution - Episode 2 TAN Network 2.5D maze Ghost in the Cell The Travelling Salesman Problem Plight Of The Fellowship Of The Ring Paper labyrinth Symbolic system of equations orDer oF succeSsion Locked in gear Mars Colonization Propositions in Frege’s ideography Battle Tower English length units conversion When pigs fly Logically reasonable inequalities Tree Paths Nurikabe TryAngle Catch Spring Challenge 2021 |
| Great-circle distance |
ADVANCED |
1 |
Hello, World! |
| Greedy algorithms |
INTERMEDIATE |
12 |
The Gift Super Computer Magic stones The Travelling Salesman Problem Add'em Up Brick in the Wall Rearrange string to two numbers Forest Fire Huffman Code Battle Tower Breaking Apart Maximising integers |
| Grid |
|
4 |
Flower beds Kakuro Solver Is the King In Check? (Part 1) Is the King In Check? (Part 2) |
| Group theory |
ADVANCED |
3 |
2×2×2 Rubik’s cube movements Doubly solved Rubik's cube Ring the bells |
| Guessing digits |
|
1 |
Guessing digits |
| Hash tables |
FUNDAMENTALS |
1 |
MIME Type |
| Hashing |
|
1 |
SHA-256 Hash |
| Heuristic search |
INTERMEDIATE |
1 |
A-star exercise |
| Hooch |
|
1 |
Hooch Clash |
| Horn-SAT |
ADVANCED |
1 |
Horn-SAT solver |
| Image processing |
ADVANCED |
5 |
Music Scores Seam Carving Photo Booth Transformation Hidden Messages In Images Fractal Image Recognition |
| Interpolation |
INTERMEDIATE |
1 |
Her Majesty's well shared secret |
| interpreter |
|
4 |
Reverse Polish Notation Micro Assembly Simple CPU Emulation 1 What the Brainfuck ! |
| Intervals |
FUNDAMENTALS |
5 |
Shadows of the Knight - Episode 1 Shadows of the Knight - Episode 2 ANEO Sponsored Puzzle Fair Numbering Graffiti on the fence |
| Jump Point Search |
INTERMEDIATE |
2 |
Jump Point Search - Preprocessing Jump Point Search - Runtime |
| Lazy Evaluation |
INTERMEDIATE |
1 |
1D Spreadsheet |
| Least-squares |
|
1 |
Particle Detection with Cloud Chamber |
| Lexicographic order |
|
1 |
Ring the bells |
| Line breaks |
|
1 |
Breaking Apart |
| Linear algebra |
|
1 |
1000000000D WORLD |
| Lists |
FUNDAMENTALS |
8 |
There is no Spoon - Episode 1 The Urinal Problem Elementary cellular automaton Queneau Numbers 2×2×2 Rubik’s cube movements Criminal Target Firing Custom Game of Life |
| Lizard |
|
0 |
|
| Logic |
FUNDAMENTALS |
10 |
Horn-SAT solver Guessing n Cheating Guessing digits Breach Propositions in Frege’s ideography Murder in the village! Find the liars When pigs fly Nurikabe Master of Mayhem |
| Logical problem |
INTERMEDIATE |
1 |
Assignments are boring |
| Loops |
FUNDAMENTALS |
52 |
Temperatures ASCII Art Chuck Norris MIME Type Defibrillators Horse-racing Duals Stock Exchange Losses Network Cabling Scrabble Temperatures The Descent May the Triforce be with you! Rugby score Reversed Look-and-say Horse-racing Hyperduals Folding Paper Porcupine Fever Bingo! Simplified Monopoly™ Turns Prediction Bank Robbers ANEO Sponsored Puzzle Bulgarian solitaire Brackets, Extended Edition Ghost Legs Kaprekar's routine Pirate's treasure Rooks Movements IP mask calculating Chuck Norris - Code Golf Lumen Forest Fire Happy Numbers Surakarta Rectangle Partition Chess board analyzer Target Firing Dungeons and Maps 7-segment scanner Unique Prefixes Low Resolution: What's The Shape? Hidden Messages In Images Ways to make change 🏐 🏖 Beach Volleyball 🏐 🏖 IPv6 Shortener if then else Divisibility of Fibonacci numbers sum Fractal Image Recognition Pedestrian Traffic Valid brackets in code Custom Game of Life Zhiwei Sun Squares Shadow Casting |
| Machine learning |
ADVANCED |
2 |
Basic Decision Tree - 1 Basic Decision Tree - 2 |
| Mathematics |
INTERMEDIATE |
31 |
Quaternion Multiplication Nature of quadrilaterals Factorial vs Exponential Number of letters in a number - Binary Next car license plate ? Folding Paper Execution Circle What's so complex about Mandelbrot? Magic count of numbers Box of Cigars Expand the polynomial Morellet’s random lines Bag of Balls Bank Robbers ANEO Sponsored Puzzle Trits (Balanced Ternary Computing) Digit sum successor Her Majesty's well shared secret Brick in the Wall Robbery optimisation Photo Booth Transformation Bit count to limit Halting sequences Smile! Frieze! Cheese! Encounter surface Number derivation Place the Parenthesis Nature of triangles Christmas Tree Prime Fractals in Pascal's Triangle Zhiwei Sun Squares |
| Maths |
|
0 |
|
| Matrix product |
INTERMEDIATE |
1 |
Chained Matrix Products |
| maze |
ADVANCED |
6 |
Detective Pikaptcha EP1 Detective Pikaptcha EP2 Detective Pikaptcha EP3 Detective Pikaptcha EP4 Space Maze Sokoban |
| MCTS |
|
1 |
Night Of War |
| Medians |
INTERMEDIATE |
1 |
Network Cabling |
| Memoization |
ADVANCED |
10 |
Dwarfs standing on the shoulders of giants Surface Bender - Episode 2 The Resistance Length of Syracuse Conjecture Sequence 1D Spreadsheet Windmill problem Van Eck's sequence Rod cutting problem Prime Fractals in Pascal's Triangle |
| Merge sort |
|
1 |
1000000000D WORLD |
| Minimax |
ADVANCED |
25 |
Tron Battle Great escape Wondev Woman Minimax exercise Ultimate Tic-Tac-Toe Xmas Rush Vindinium Yavalath Cultist Wars Breakthrough Paper soccer Onitama Tulips and Daisies Yinsh Othello Atari Go Dots and Boxes Atari Go 9x9 Blocking Connect 4 Clobber Night Of War Spring Challenge 2021 Amazons Adversarial Mate with Rook |
| Mobius |
|
1 |
Detective Pikaptcha EP3 |
| Modular calculus |
INTERMEDIATE |
6 |
Vortex Monthly System Elliptic curve cryptography Discrete Log Problem Decode the message Divisibility of Fibonacci numbers sum |
| Moebius |
|
1 |
Detective Pikaptcha EP3 |
| Monte Carlo tree search |
ADVANCED |
13 |
Monte Carlo Tree Search exercise Ultimate Tic-Tac-Toe Langton s Ant Yavalath Breakthrough Tulips and Daisies Yinsh Othello Blocking Fall Challenge 2020 Clobber Amazons Can you save the forest - Episode 1 |
| Multi-agent |
ADVANCED |
11 |
Platinum Rift - Episode 1 Platinum Rift - Episode 2 Coders Strike Back CodeBusters Fantastic Bits Coders of the Caribbean Mean Max Botters of the Galaxy Crystal Rush Spring Challenge 2020 TryAngle Catch |
| neighbour count |
INTERMEDIATE |
1 |
Detective Pikaptcha EP1 |
| Neural network |
ADVANCED |
2 |
Coders Strike Back Binary neural network - Part 1 |
| NGR |
|
1 |
1. NGR - Basic Radar |
| Nim game |
|
1 |
Find the winning strategy |
| NRPA |
|
1 |
SameGame |
| Number theory |
INTERMEDIATE |
6 |
Hooch Clash Are The Clumps Normal Smooth! Smooth Factory Unit Fractions Bailey–Borwein–Plouffe Pi |
| Numbers |
FUNDAMENTALS |
1 |
Next growing number |
| Opening Book |
|
1 |
Yavalath |
| Optimization |
INTERMEDIATE |
11 |
Code of the Rings Code vs Zombies Coders Strike Back Ticket to Ride: Europe Harmless Rooks A*Craft Bender - Episode 4 Road Trip Big Bang Theory - Sheldon's Array Puzzle Chained Matrix Products The Michelangelo Code |
| Output formatting |
FUNDAMENTALS |
1 |
Expand the polynomial |
| Palindrome |
INTERMEDIATE |
2 |
Near-Palindromes Longest Palindrome |
| Parsing |
FUNDAMENTALS |
20 |
CGX Formatter XML MDF-2016 Quaternion Multiplication Brackets, Enhanced Edition Order of Oopserations! Numeral system Expand the polynomial Trits (Balanced Ternary Computing) Breach Fun with Set theory Propositions in Frege’s ideography Auto pickup Source Code Analyser When pigs fly Equivalent Resistance, Circuit Building Place the Parenthesis IPv6 Shortener Parse SQL Queries Bijective Numeration Offset Arrays |
| Path finding |
ADVANCED |
0 |
|
| Pathfinding |
ADVANCED |
34 |
Tron Battle Skynet Revolution - Episode 2 The Labyrinth Power of Thor - Episode 2 TAN Network Bender - Episode 2 The Last Crusade - Episode 2 The Last Crusade - Episode 3 Platinum Rift - Episode 1 Don't Panic - Episode 2 Platinum Rift - Episode 2 Great escape 2.5D maze Coders of the Caribbean A-star exercise Plight Of The Fellowship Of The Ring Paper labyrinth orDer oF succeSsion Number of paths between 2 points Xmas Rush Bender - Episode 4 11-puzzle Cloudy Weather Paper soccer Space Maze Spring Challenge 2020 The lost child.Episode-1 Dungeons and Maps Jump Point Search - Preprocessing Sokoban Jump Point Search - Runtime Nurikabe A Man with a Plan Volcanoes |
| Pathfinding, Graphs |
ADVANCED |
0 |
|
| Patience |
|
1 |
🃏 FreeCell 🃏 |
| Pattern recognition |
ADVANCED |
9 |
Music Scores Vox Codei - Episode 2 Code of the Rings Divine! Find the replacement Trits (Balanced Ternary Computing) Barcode scanner Breach Smile! Frieze! Cheese! |
| Permutations |
INTERMEDIATE |
7 |
Genome Sequencing Queneau Numbers Photo Booth Transformation Crossword Doubly solved Rubik's cube Kids Blocks Ring the bells |
| Physics |
INTERMEDIATE |
8 |
Gravity Tumbler Cards castle Sandpile addition Apple tree Stall tilt Particle Detection with Cloud Chamber Equivalent Resistance, Circuit Building 🏐 🏖 Beach Volleyball 🏐 🏖 |
| Pi |
|
1 |
Bailey–Borwein–Plouffe Pi |
| Polynomials |
ADVANCED |
1 |
Her Majesty's well shared secret |
| Primes |
INTERMEDIATE |
5 |
Divide the factorial Count of Primes in a number grid Factorials of primes decomposition The Balanced Centrifuge Problem CGFunge Prime |
| Priority Queue |
INTERMEDIATE |
1 |
Identifying data structure |
| Probability |
INTERMEDIATE |
3 |
Bag of Balls Dice probability calculator Benford's law |
| Queue |
FUNDAMENTALS |
1 |
Identifying data structure |
| Queues |
FUNDAMENTALS |
1 |
War |
| Radix |
INTERMEDIATE |
3 |
Mayan Calculation Numeral system Bijective Numeration |
| Range |
|
0 |
|
| Rational Numbers |
INTERMEDIATE |
1 |
Rational Number Tree |
| Ray Casting |
|
1 |
Let's make a cheap ASCII 3D engine! |
| Reading Comprehension |
|
1 |
A Man with a Plan |
| Reading the statement |
|
4 |
Hooch Clash Smooth! Smooth Factory In Stereo |
| Recursion |
FUNDAMENTALS |
16 |
Dwarfs standing on the shoulders of giants Surface Bender - Episode 2 The Resistance There is no Spoon - Episode 2 Carmichael numbers Winamax Sponsored Contest 2048 scores The Grand Festival - I The Grand Festival - II Go competition Surakarta Let's Go To The Cinema! Divisibility of Fibonacci numbers sum Offset Arrays Prime Fractals in Pascal's Triangle |
| Regression analysis |
ADVANCED |
1 |
Bender - Episode 3 |
| Regular expressions |
INTERMEDIATE |
4 |
Murder in the village! Data compression 1 IPv6 Shortener Valid brackets in code |
| Remainder Theorem |
ADVANCED |
1 |
Remainder Fantasy |
| Resource management |
ADVANCED |
8 |
Game of Drones Platinum Rift - Episode 1 Platinum Rift - Episode 2 CodeBusters Ghost in the Cell Code Royale Tower Dereference Crystal Rush |
| Reverse engineering |
FUNDAMENTALS |
2 |
CodinGame Sponsored Contest Breach |
| Reverse Polish Notation |
INTERMEDIATE |
2 |
Reverse Polish Notation The Polish Dictionary |
| Rewriting |
FUNDAMENTALS |
1 |
Symbolic system of equations |
| Rock Paper Scissors |
|
1 |
Rock-Paper-Scissors War |
| rotation |
INTERMEDIATE |
1 |
Windmill problem |
| Rubik's cube |
|
2 |
2×2×2 Rubik’s cube movements Doubly solved Rubik's cube |
| Rubik’s cube |
|
0 |
|
| Run-length encoding |
|
1 |
Binary image |
| Satisfiability |
INTERMEDIATE |
1 |
Horn-SAT solver |
| Scheduling |
ADVANCED |
2 |
Super Computer Legendary Archer Octavius |
| Secret sharing |
|
1 |
Her Majesty's well shared secret |
| Sequences |
FUNDAMENTALS |
4 |
Conway Sequence Box of Cigars Length of Syracuse Conjecture Sequence Remaining Card |
| Set theory |
FUNDAMENTALS |
1 |
Fun with Set theory |
| Sets |
FUNDAMENTALS |
2 |
Telephone Numbers Guessing n Cheating |
| Sexagesimal system |
INTERMEDIATE |
1 |
Hello, World! |
| SHA-256 |
|
1 |
SHA-256 Hash |
| Shortest path |
ADVANCED |
0 |
|
| Simulated Annealing |
ADVANCED |
1 |
Search Race |
| Simulation |
INTERMEDIATE |
27 |
Bender - Episode 1 Roller Coaster Poker Chip Race Vox Codei - Episode 1 Vox Codei - Episode 2 Back to the Code Code vs Zombies Smash The Code Hypersonic Fantastic Bits Wondev Woman Mean Max A*Craft Bit Runner 2048 Detective Pikaptcha EP2 Detective Pikaptcha EP3 Detective Pikaptcha EP4 Let's Go To The Cinema! Space Maze Tower Dereference TicTacToe Search Race SameGame 2048 Volcanoes Custom Game of Life Can you save the forest - Episode 1 |
| Sliding window |
|
1 |
Feature Extraction |
| Smooth |
|
2 |
Smooth! Smooth Factory |
| Snell's Law |
|
1 |
🏐 🏖 Beach Volleyball 🏐 🏖 |
| Sorting |
FUNDAMENTALS |
5 |
Add'em Up Dynamic sorting Hunger Games Thomas and the Freight Cars Inversion count |
| Spock |
|
0 |
|
| SQL |
|
1 |
Parse SQL Queries |
| Stack |
FUNDAMENTALS |
8 |
Reverse Polish Notation Micro Assembly Simple CPU Emulation 1 Identifying data structure Let's Go To The Cinema! The Polish Dictionary Container Terminal Valid brackets in code |
| State machine |
ADVANCED |
9 |
Bender - Episode 1 CodeBusters Elementary cellular automaton Langton's ant Parsing context-free grammar Code4Life Code a la Mode Is that a possible word? EP1 Fireworks |
| steganography |
|
1 |
Hidden Messages In Images |
| Steiner Tree |
|
1 |
Binary Extension |
| Streams |
FUNDAMENTALS |
1 |
Smooth Factory |
| string |
FUNDAMENTALS |
1 |
Chuck Norris - Code Golf |
| String manipulation |
FUNDAMENTALS |
26 |
Text alignment Anagrams Army ants Reversed Look-and-say Bulk Email Generator Organic Compounds 🔬 Encryption/Decryption of Enigma Machine Rectangular block spinner Dynamic sorting Fishing With A Stick Rearrange string to two numbers Create the longest sequence of 1s TicTacToe Auto pickup Source Code Analyser Breaking Apart 7-segment scanner Prefix code Unique Prefixes Nicholas Breakspeare and Hugh of Evesham Cistercian Numerals Place the Parenthesis if then else Valid brackets in code Dev friends In Stereo |
| Strings |
FUNDAMENTALS |
34 |
ASCII Art Chuck Norris MIME Type Mayan Calculation CGX Formatter Genome Sequencing Othello XML MDF-2016 Jack Silver: The Casino How time flies Nature of quadrilaterals 2×2×2 Rubik’s cube movements Hidden word Longest Palindrome Monthly System Paper-folding curve Text formatting Find the replacement Paper labyrinth De-FizzBuzzer Encryption/Decryption of Enigma Machine Fishing With A Stick Criminal Palindromic Decomposition Breach Crossword Chess board analyzer Dungeons and Maps Particle Detection with Cloud Chamber IPv6 Shortener Master of Mayhem The Michelangelo Code Dev friends In Stereo |
| Strive for Simplicity |
|
1 |
Robot Show |
| Tables |
|
1 |
Parse SQL Queries |
| Tile-matching |
|
1 |
SameGame |
| Tiling |
|
2 |
Depot organization 3×N Tiling |
| Time |
|
1 |
🏐 🏖 Beach Volleyball 🏐 🏖 |
| Topology |
INTERMEDIATE |
3 |
Cross the lines HTML table cell split The lost files |
| Transformations |
|
1 |
Smile! Frieze! Cheese! |
| Trees |
INTERMEDIATE |
5 |
Ancestors & Descendants Code your own Automaton2000, step 1 Plague, Jr Huffman Code Find the liars |
| Tricky |
|
1 |
Sum of divisors |
| Tries |
ADVANCED |
2 |
Telephone Numbers Prefix code |
| Trigonometry |
INTERMEDIATE |
12 |
Defibrillators Mars Lander - Episode 2 TAN Network Mars Lander - Episode 3 Mars Lander Coders Strike Back Nature of quadrilaterals Fantastic Bits Hello, World! Escaping the cat Nature of triangles Let's make a cheap ASCII 3D engine! |
| Two pointers |
|
1 |
1000000000D WORLD |
| Unit propagation |
|
2 |
Horn-SAT solver English length units conversion |
| windmill |
|
1 |
Windmill problem |
| XOR |
FUNDAMENTALS |
1 |
Hacking at RobberCity |
| 💡💡💡💡💡 |
|
1 |
Light Bulbs |
| 💦💦💦🔥🔥🔥 |
|
1 |
1D Bush Fire |