| 2D array |
FUNDAMENTALS |
51 |
Squares order Minesweeper Sandpile addition n Queens Hitori solver 1010(1) Magic Square Count of Primes in a number grid Dominoes solver Dumbbells solver 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 Substitution Encoding Object Insertion Folding a Note Wave Function Collapse (sans Shannon) Minesweeper level generator Block the spreading fire ! Largest Binary Rectangle Rotating arrows No More Pythons, Please! Crop-Circles Constrained Latin Squares Character replacement problem The logo beyond C++ and C# Killer Sudoku Solver Make an Atari Font Picture Puzzle Tiny Forest Tile a Floor Word Search for Programmers Tile a Floor Differently Couple's Picture-Frame Digital Scoreboard Popularity of each activity |
| 3D |
ADVANCED |
6 |
Detective Pikaptcha EP4 Blockout Let's make a cheap ASCII 3D engine! Dice Duel ASCII cube 3D printer |
| 5% |
|
2 |
TryAngle Catch Dice Duel |
| A* |
ADVANCED |
4 |
A-star exercise 11-puzzle Jump Point Search - Preprocessing Jump Point Search - Runtime |
| Abstraction |
|
2 |
Derivative time !!! - part1 Derivative time !!! - part2 |
| Algebra |
FUNDAMENTALS |
6 |
Quaternion Multiplication Expand the polynomial Jumping Frogs 24 Game Body weight is a girl's secret Conditional probabilities |
| Algorithm X |
|
1 |
25x25 Sudoku |
| AM/PM |
|
1 |
Railway Station Clock |
| angle |
FUNDAMENTALS |
2 |
Windmill problem WW2 Mortar Warfare |
| Arithmetic |
FUNDAMENTALS |
28 |
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 Remainder Fantasy Flower beds Number derivation Nuggets numbers Divisibility of Fibonacci numbers sum Railway Station Clock Cooking passion 24 Game Buzzle Holey Times N Pearls Necklace Running Up That Hill Crazy List 24: The Long Game |
| Arithmetics |
FUNDAMENTALS |
0 |
|
| Array forbidden |
|
1 |
Graffiti on the fence |
| Arrays |
FUNDAMENTALS |
37 |
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 Personal Best Detective Geek Treasure hunt FireControl Self Checkout Machine Genetics and Computers - Part 1 10 pin Bowling Scores Snail Run The broken editor Tennis score Artificial Emotional Intelligence Merlin's Magic Square abcdefghijklmnopqrstuvwxyz Max Area Shoot Enemy Aircraft ASCII Art - Code Golf The helpdesk The leaking bathtub NATO-alphabet's odd uncles Count your coins |
| ascii |
|
1 |
Hidden Messages In Images |
| Ascii Art |
INTERMEDIATE |
44 |
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 Where's Wally L-triominoes Holey Times Join the Dots No More Pythons, Please! Scary Ride at the Haunted Mansion Cubic Bézier curves Bouncing Barry Retro Typewriter Art Crop-Circles Level of nested parentheses Ulam Spiral The logo beyond C++ and C# Create 'Turn Here' Signs Make an Atari Font ASCII Art with Logo Language |Build A Bookcase|🔨 Picture Puzzle ASCII Art QR code ASCII Art with Logo Language, Part 2 Identify a simple shape ASCII Art The Drunken Bishop Algorithm Tile a Floor How many triangles and rectangles? Tile a Floor Differently Couple's Picture-Frame Digital Scoreboard |
| automates |
|
1 |
circular automation, the period of chaos |
| Autoscaling |
|
1 |
Simple auto-scaling |
| Average |
FUNDAMENTALS |
1 |
Dolbear's Law |
| Backtracking |
ADVANCED |
22 |
The Bridge The Fall - Episode 2 The Fall - 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 Three little piggies the voucher Constrained Latin Squares Hexagonal Maze - part2 Suguru Solver Fix the spaces The Fall - Episode 3 - Code Golf The Bridge - Code Golf The Fall - Episode 2 - Code Golf 16x16 Sudoku 25x25 Sudoku |
| Ballistics |
|
1 |
Legendary Archer Octavius |
| barcode |
INTERMEDIATE |
0 |
|
| Barycenters |
INTERMEDIATE |
1 |
Power of Thor - Episode 2 |
| Base conversion |
|
1 |
Make an Atari Font |
| Beam Search |
ADVANCED |
6 |
Search Race SameGame 2048 Can you save the forest - Episode 1 Can you save the forest - Episode 2 RUSH HOUR |
| Bezier Curves |
|
1 |
Cubic Bézier curves |
| Bezout's identity |
ADVANCED |
1 |
Jumping Frogs |
| BFS |
ADVANCED |
26 |
Death First Search - 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 Train passenger Catching Up River Crossing Hexagonal Maze Moves in maze Lunar Lockout RUSH HOUR Maze /w teleporters and jumps Longest coast abcdefghijklmnopqrstuvwxyz Hexagonal Maze - part2 The Labyrinth - Code Golf Surface - Code Golf |
| Bin packing |
ADVANCED |
2 |
ASCII Art QR code ASCII Art The Drunken Bishop Algorithm |
| Binary |
|
1 |
Duo combinations |
| Binary representation |
|
1 |
Binary Sequence |
| Binary search |
ADVANCED |
5 |
Shadows of the Knight - Episode 1 Shadows of the Knight - Episode 2 Binary Extension Shadows of the Knight - Episode 2 - Code Golf Shadows of the Knight - Episode 1 - Code Golf |
| Binary Tree |
ADVANCED |
4 |
Rational Number Tree Binary Search Tree Traversal Tree Paths Binary Tree Visual |
| Bitboarding |
ADVANCED |
8 |
Breakthrough Othello Clobber Amazons Lines Of Action Merlin's Magic Square Impasse Make an Atari Font |
| bitwise |
|
1 |
Hidden Messages In Images |
| Blood Types |
|
1 |
Blood Types |
| Board Game |
|
1 |
Isola |
| bot-programming |
|
1 |
Clash of Bots |
| brainfuck |
|
1 |
What the Brainfuck ! |
| Bresenham's algorithm |
ADVANCED |
1 |
Cultist Wars |
| Brute-force |
INTERMEDIATE |
16 |
Vox Codei - Episode 1 Vox Codei - Episode 2 Near-Palindromes Depot organization The Total is Right - Weird edition Hooch Clash Smooth! Kakuro Solver Lost astronaut Three little piggies All Operations are Equal! Picture Puzzle Wordle Vox Codei - Episode 2 - Code Golf Vox Codei - Episode 1 - Code Golf BobTheScience and the Food Stack |
| Bruteforce |
|
1 |
SPORE City Planner |
| Byte-pair |
|
1 |
Byte pair encoding |
| Card game |
|
0 |
|
| Card games |
|
8 |
Legends of Code & Magic Legends of Code & Magic: Constructed Green Circle 6 nimmt! / 6 qui prend! / Take 5! Blackjack solver Card Counting when easily distracted One for his Nobs Score a Bridge deal |
| Cards |
|
1 |
🃏 FreeCell 🃏 |
| CG Funge |
|
1 |
CGFunge Prime |
| chaos |
|
1 |
circular automation, the period of chaos |
| Chars |
|
1 |
Artificial Emotional Intelligence |
| Chebyshev distance |
|
1 |
Sweet spot |
| Check-digit |
FUNDAMENTALS |
4 |
ISBN Check digit Credit Card Verifier (Luhn’s algorithm) Barcode scanner Tricky Number Verifier |
| chess |
|
10 |
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 Queen control |
| Chocolate |
|
1 |
Goro Want Chocolate |
| cinematics |
|
1 |
Asteroids |
| Cipher |
ADVANCED |
2 |
Hacking at RobberCity Caesar is the chief |
| Classic board games |
|
0 |
|
| Clock |
|
1 |
Railway Station Clock |
| clustering |
|
1 |
Virus spreading and clustering |
| Collision Detection |
ADVANCED |
2 |
Darts Snooker Ball Collision |
| Combination puzzle |
ADVANCED |
3 |
Knights Jam One for his Nobs Mind Cracker |
| Combinations |
|
1 |
Kids Blocks |
| Combinatorics |
ADVANCED |
13 |
OneWay City Count as I count Bulls and Cows 2 Map Colorations Kakuro Solver if then else Prime Fractals in Pascal's Triangle Wave Function Collapse (sans Shannon) Constrained Latin Squares Team Building Wordle Duo combinations Count as I count #2 |
| Compiler |
|
1 |
Ted's compiler |
| Complex |
|
1 |
Euclid's algorithm with complex numbers |
| Complex Numbers |
|
1 |
Mandelbrot Set Approximation |
| Complexity |
INTERMEDIATE |
1 |
Chained Matrix Products |
| Compression |
ADVANCED |
5 |
Ancestors & Descendants Paper labyrinth Huffman Code Byte pair encoding Fax machine |
| Computer graphics |
|
1 |
Cubic Bézier curves |
| Condition |
FUNDAMENTALS |
0 |
|
| Conditions |
FUNDAMENTALS |
65 |
Power of Thor - Episode 1 Temperatures Unary MIME Type The Fall - Episode 1 Stock Exchange Losses Scrabble Mars Lander - Episode 1 Onboarding Don't Panic - Episode 1 Don't Panic Power of Thor Temperatures Squares order Othello Minesweeper Texas Holdem n Queens Monday Tuesday Happy Days Hidden word Hitori solver The River I. Simple Awalé Morellet’s random lines Code4Life Dominoes solver Simplified Monopoly™ Turns Prediction Brackets, Extended Edition Dumbbells solver Ghost Legs Pirate's treasure Guessing n Cheating Rooks Movements The Dart 101 Unary - 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) Simple AI duels Condition Overshadowing Genetics and Computers - Part 1 PARK PILOT 10 pin Bowling Scores No More Pythons, Please! Scary Ride at the Haunted Mansion Tennis score Frog Exchange Blackjack solver Word Search for Programmers NATO-alphabet's odd uncles Score a Bridge deal Video Assistant Referee Queen control |
| Constraint Propagation |
|
2 |
River Crossing Wave Function Collapse (sans Shannon) |
| Convolution |
|
1 |
Feature Extraction |
| Coop Game |
|
2 |
Code a la Mode Fireworks |
| Coordinates |
INTERMEDIATE |
6 |
Divine! Cloudy Weather Connect the Hyper-Dots The Mystic Rectangle Minesweeper level generator Chebyshev Orbiting |
| Counting |
|
1 |
How many triangles and rectangles? |
| Counting sort |
|
1 |
Assignments are boring |
| Cryptography |
ADVANCED |
20 |
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 Folding a Note Detective Geek Running Up That Hill The weight of words Breaking Bifid ASCII Art QR code Frequency-Based Decryption |
| cube |
|
2 |
Detective Pikaptcha EP4 Die Handedness |
| Cycle detection |
ADVANCED |
4 |
Symbolic system of equations Bulgarian solitaire Kaprekar's routine Library dependencies |
| Data compression |
|
1 |
IPv6 Shortener |
| Data Structure |
|
1 |
Container Terminal |
| Data Types |
FUNDAMENTALS |
4 |
Happy Numbers Unit Fractions Parse SQL Queries Saving Snoopy |
| DataBases |
|
1 |
Parse SQL Queries |
| Deadlock |
|
1 |
Frog Exchange |
| DeckBuilding |
|
1 |
Green Circle |
| decoder |
INTERMEDIATE |
1 |
Prefix code |
| Decryption |
|
0 |
|
| Dependency Graph |
INTERMEDIATE |
2 |
1D Spreadsheet Library dependencies |
| Depth first search |
ADVANCED |
2 |
Longest Road Hotel |
| Determinant |
|
1 |
Die Handedness |
| DFA |
|
0 |
|
| DFS |
ADVANCED |
12 |
The Bridge Vox Codei - Episode 1 Vox Codei - Episode 2 Smash The Code Hypersonic orDer oF succeSsion Locked in gear RUSH HOUR abcdefghijklmnopqrstuvwxyz Vox Codei - Episode 2 - Code Golf Vox Codei - Episode 1 - Code Golf The Bridge - Code Golf |
| Digit counts |
FUNDAMENTALS |
1 |
Fair Numbering |
| Dijkstra |
|
1 |
Grid climbing |
| Dijkstra's algorithm |
|
0 |
|
| DIMACS |
ADVANCED |
1 |
Horn-SAT solver |
| Diophantine Equation |
ADVANCED |
1 |
Hooch Clash |
| Disappointment |
|
1 |
TryAngle Catch |
| Discrete Data |
|
1 |
Body weight is a girl's secret |
| Distances |
INTERMEDIATE |
25 |
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 Mad Pod Racing CodeBusters Fantastic Bits Coders of the Caribbean Spring Challenge 2020 Escaping the cat 🏐 🏖 Beach Volleyball 🏐 🏖 Connect the Hyper-Dots The Mystic Rectangle By train or by car ? Another Road Construction Site - 1 Mars Lander - Episode 3 - Code Golf Network Cabling - Code Golf The alien business of cows Vectors in variables dimensions |
| Divergence |
|
1 |
Mandelbrot Set Approximation |
| DLX |
|
1 |
25x25 Sudoku |
| domino |
|
1 |
Domino Puzzle |
| Dot product |
INTERMEDIATE |
2 |
Dead men's shot Feature Extraction |
| Double-and-add |
|
1 |
Elliptic curve cryptography |
| Dynamic programming |
ADVANCED |
27 |
Roller Coaster Blunder - 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 Gerrymandering Longest Increasing Subsequence The Resistance - Code Golf Roller Coaster - Code Golf Grid climbing Count as I count #2 |
| Elliptic Curve |
ADVANCED |
1 |
Elliptic curve cryptography |
| Encoding |
INTERMEDIATE |
15 |
Unary The Resistance Music Scores Bruce Lee Disordered First Contact Encryption/Decryption of Enigma Machine Unary - Code Golf Decode the message Byte pair encoding Bijective Numeration Substitution Encoding Code Breaker Puzzle The Resistance - Code Golf Music Scores - Code Golf Frequency-Based Decryption |
| Encryption |
|
0 |
|
| 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 |
| Fire |
|
1 |
Block the spreading fire ! |
| Flood fill |
ADVANCED |
17 |
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 Moves in maze Git Patchwork Surface - Code Golf |
| Formulas |
FUNDAMENTALS |
1 |
Dolbear's Law |
| Fractal |
|
3 |
What's so complex about Mandelbrot? Paper-folding curve circular automation, the period of chaos |
| Fractals |
|
1 |
Mandelbrot Set Approximation |
| Fruit |
|
2 |
Smooth! Smooth Factory |
| Game theory |
|
1 |
Simple AI duels |
| Gauss–Wantzel theorem |
ADVANCED |
1 |
Regular polygons |
| Generation |
|
0 |
|
| Genetic Algorithm |
ADVANCED |
3 |
Bit Runner 2048 Search Race CG's Next Top Model |
| Genetics |
ADVANCED |
2 |
Blood Types Match DNA Sequence |
| Geolocation |
INTERMEDIATE |
1 |
Hello, World! |
| Geometry |
INTERMEDIATE |
21 |
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 Die Handedness Walk on a Die Crop-Circles Should Bakers be Frugal? Blending Colors Cylinders String balls |
| 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 |
5 |
Domino Puzzle Binary Search Tree Traversal The lost files Fall Challenge 2020 We're going in circles! |
| Graphs |
INTERMEDIATE |
34 |
Death First Search - Episode 1 Dwarfs standing on the shoulders of giants Death First Search - 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 Train passenger Catching Up DAWG Entry code How many roads lead to Rome? Conditional probabilities Longest coast Character replacement problem Dwarfs standing on the shoulders of giants - Code Golf SPORE City Planner Firewall placement Spring Challenge 2023 - Ants |
| Great-circle distance |
ADVANCED |
1 |
Hello, World! |
| Greedy algorithms |
INTERMEDIATE |
16 |
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 Catching Up Travelling Salesman Super Computer - Code Golf BobTheScience and the Food Stack |
| Green IT |
|
1 |
Green Circle |
| Grid |
|
4 |
Flower beds Kakuro Solver Is the King In Check? (Part 1) Is the King In Check? (Part 2) |
| Group theory |
ADVANCED |
5 |
2×2×2 Rubik’s cube movements Doubly solved Rubik's cube Ring the bells Mathematics for big ears N Pearls Necklace |
| Guessing digits |
|
1 |
Guessing digits |
| Hash tables |
FUNDAMENTALS |
4 |
MIME Type Markov Text Generation Goldbach’s Conjecture What 🌼 is 🌷 your 🌸 garden 💐 worth? |
| Hashing |
|
1 |
SHA-256 Hash |
| Heuristic search |
INTERMEDIATE |
3 |
A-star exercise Travelling Salesman Block the spreading fire ! |
| Hooch |
|
1 |
Hooch Clash |
| Horn-SAT |
ADVANCED |
1 |
Horn-SAT solver |
| if/else |
|
1 |
FireControl |
| Image processing |
ADVANCED |
9 |
Music Scores Seam Carving Photo Booth Transformation Hidden Messages In Images Fractal Image Recognition Simple Blur Identify a simple shape Music Scores - Code Golf How many triangles and rectangles? |
| Indexation |
|
1 |
MCxxxx microcontroller simulation |
| Interpolation |
INTERMEDIATE |
2 |
Her Majesty's well shared secret Cubic Bézier curves |
| interpreter |
|
9 |
Reverse Polish Notation Micro Assembly Simple CPU Emulation 1 What the Brainfuck ! MCxxxx microcontroller simulation Condition Overshadowing Complicated interpreter ASCII Art with Logo Language ASCII Art with Logo Language, Part 2 |
| Intervals |
FUNDAMENTALS |
6 |
Shadows of the Knight - Episode 1 Shadows of the Knight - Episode 2 Fair Numbering Graffiti on the fence Shadows of the Knight - Episode 2 - Code Golf Shadows of the Knight - Episode 1 - Code Golf |
| Jump Point Search |
INTERMEDIATE |
2 |
Jump Point Search - Preprocessing Jump Point Search - Runtime |
| Kahn’s algorithm |
|
1 |
Library dependencies |
| Lazy Evaluation |
INTERMEDIATE |
1 |
1D Spreadsheet |
| LCG |
|
1 |
Random Time Travel |
| Least-squares |
|
1 |
Particle Detection with Cloud Chamber |
| Lexicographic order |
|
1 |
Ring the bells |
| Line breaks |
|
1 |
Breaking Apart |
| Linear algebra |
|
3 |
1000000000D WORLD Die Handedness Running Up That Hill |
| Lists |
FUNDAMENTALS |
13 |
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 Simple Blur Wine from Kalbodia - Episode 1 FireControl The Stonemason Artificial Emotional Intelligence |
| Lists and Arrays |
|
1 |
Artificial Emotional Intelligence |
| Lizard |
|
0 |
|
| Logic |
FUNDAMENTALS |
25 |
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 Someone's Acting Sus.... The Hidden Fortress Genetics and Computers - Part 1 Rocket engines Logic gates Takuzu Solver Complicated interpreter Merlin's Magic Square Suguru Solver Create 'Turn Here' Signs |Build A Bookcase|🔨 Tile a Floor The alien business of cows Tile a Floor Differently Video Assistant Referee |
| Logical problem |
INTERMEDIATE |
1 |
Assignments are boring |
| Loops |
FUNDAMENTALS |
99 |
Temperatures ASCII Art Unary MIME Type Defibrillators Horse-racing Duals Stock Exchange Losses Network Cabling Scrabble Temperatures The Descent Squares order May the Triforce be with you! Minesweeper Rugby score Reversed Look-and-say Horse-racing Hyperduals Folding Paper n Queens Hitori solver Porcupine Fever Bingo! Dominoes solver Simplified Monopoly™ Turns Prediction Bank Robbers Bulgarian solitaire Brackets, Extended Edition Dumbbells solver Ghost Legs Kaprekar's routine Pirate's treasure Rooks Movements IP mask calculating Unary - 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 Object Insertion Folding a Note Someone's Acting Sus.... Detective Geek Simple auto-scaling Lost astronaut Code Breaker Puzzle Various Number Spirals Thermal Flying - Episode 1 FireControl Frame the picture Faro shuffle Self Checkout Machine Genetics and Computers - Part 1 Body weight is a girl's secret Minesweeper level generator Rotating arrows 10 pin Bowling Scores No More Pythons, Please! All Operations are Equal! Snail Run Tennis score Constrained Latin Squares Blackjack solver Match DNA Sequence Messed up mosaics Another Road Construction Site - 1 Goldbach’s Conjecture Create 'Turn Here' Signs Shoot Enemy Aircraft |Build A Bookcase|🔨 Team Building Tabloid Couple-Names 💕 ASCII Art - Code Golf The Descent - Code Golf Network Cabling - Code Golf Word Search for Programmers The helpdesk The leaking bathtub Fibonacci's Rabbit BobTheScience and the Food Stack Queen control |
| Machine learning |
ADVANCED |
5 |
Basic Decision Tree - 1 Basic Decision Tree - 2 Sticky Keyboard CG's Next Top Model Survey Prediction |
| Manhattan distance |
|
1 |
Snail Run |
| Markov Chain |
|
0 |
|
| Markov chains |
|
1 |
Markov ants |
| Mathematics |
INTERMEDIATE |
57 |
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 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 Cosmic Love Primitive Pythagorean Triples Die Handedness Walk on a Die A Bunny and Carrots Rocket engines Continued Fractions All Operations are Equal! Ulam Spiral Running Up That Hill Should Bakers be Frugal? Conditional probabilities Max Area Another Road Construction Site - 1 Goldbach’s Conjecture Euclid's Algorithm |Build A Bookcase|🔨 Recurring decimal to fraction Mandelbrot Set Approximation Couple's Picture-Frame Fibonacci's Rabbit Furlongs per Fortnight Euclid's algorithm with complex numbers Mirrors Count your coins What 🌼 is 🌷 your 🌸 garden 💐 worth? Popularity of each activity |
| Maths |
|
0 |
|
| Matrix product |
INTERMEDIATE |
1 |
Chained Matrix Products |
| maze |
ADVANCED |
14 |
Detective Pikaptcha EP1 Detective Pikaptcha EP2 Detective Pikaptcha EP3 Detective Pikaptcha EP4 Space Maze Sokoban Dungeon 3D Hexagonal Maze Moves in maze Maze /w teleporters and jumps Hexagonal Maze - part2 Sky Maze Adventures 1 An adventure in the fantasy world Maze for the Champions |
| MCTS |
|
1 |
Night Of War |
| Medians |
INTERMEDIATE |
2 |
Network Cabling Network Cabling - Code Golf |
| Memoization |
ADVANCED |
16 |
Dwarfs standing on the shoulders of giants Surface Blunder - 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 Goldbach’s Conjecture The Resistance - Code Golf Surface - Code Golf Dwarfs standing on the shoulders of giants - Code Golf Grid climbing Chebyshev Orbiting |
| Merge sort |
|
1 |
1000000000D WORLD |
| Minimax |
ADVANCED |
32 |
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 Abalone Counting TicTacToe Lines Of Action nine men's morris Isola Git Patchwork Impasse |
| Mobius |
|
1 |
Detective Pikaptcha EP3 |
| Modular calculus |
INTERMEDIATE |
9 |
Vortex Monthly System Elliptic curve cryptography Discrete Log Problem Decode the message Divisibility of Fibonacci numbers sum Cooking passion Self Checkout Machine Running Up That Hill |
| Moebius |
|
1 |
Detective Pikaptcha EP3 |
| Monte Carlo tree search |
ADVANCED |
19 |
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 Abalone Counting TicTacToe Lines Of Action Isola Git Patchwork Impasse |
| Multi-agent |
ADVANCED |
16 |
Platinum Rift - Episode 1 Platinum Rift - Episode 2 Mad Pod Racing CodeBusters Fantastic Bits Coders of the Caribbean Mean Max Botters of the Galaxy Crystal Rush Spring Challenge 2020 TryAngle Catch Can you save the forest - Episode 2 Clash of Bots Spider Attack Keep Off The Grass Spring Challenge 2023 - Ants |
| neighbour count |
INTERMEDIATE |
1 |
Detective Pikaptcha EP1 |
| Neural network |
ADVANCED |
5 |
Mad Pod Racing Binary neural network - Part 1 Abalone Lines Of Action Impasse |
| NGR |
|
1 |
1. NGR - Basic Radar |
| Nim game |
|
1 |
Find the winning strategy |
| NRPA |
|
1 |
SameGame |
| number system |
|
1 |
Lost astronaut |
| Number theory |
INTERMEDIATE |
9 |
Hooch Clash Are The Clumps Normal Smooth! Smooth Factory Unit Fractions Bailey–Borwein–Plouffe Pi Primitive Pythagorean Triples Solid Integer Continued Fractions |
| Numbers |
FUNDAMENTALS |
3 |
Next growing number Number formatting Stunning numbers |
| Opening Book |
|
1 |
Yavalath |
| Optimization |
INTERMEDIATE |
17 |
Code of the Rings Code vs Zombies Mad Pod Racing 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 Block the spreading fire ! Start-up! Killer Sudoku Extreme Challenge Tiny Forest Firewall placement Mind Cracker |
| Output formatting |
FUNDAMENTALS |
1 |
Expand the polynomial |
| Palindrome |
INTERMEDIATE |
2 |
Near-Palindromes Longest Palindrome |
| parenthesis |
|
1 |
Level of nested parentheses |
| Parsing |
FUNDAMENTALS |
34 |
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 Wine from Kalbodia - Episode 1 Thermal Flying - Episode 1 Ted's compiler Retro Typewriter Art Complicated interpreter WW2 Mortar Warfare Match DNA Sequence The logo beyond C++ and C# Table of Contents Fun with CGX Expressions Fibonomials Remove insert statements Digital Scoreboard 24: The Long Game |
| Path finding |
ADVANCED |
0 |
|
| Pathfinding |
ADVANCED |
46 |
Tron Battle Death First Search - Episode 2 The Labyrinth Power of Thor - Episode 2 TAN Network Blunder - Episode 2 The Fall - Episode 2 The Fall - 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 Train passenger Dungeon 3D Catching Up Sliding Maze Puzzle How many roads lead to Rome? Hexagonal Maze Hexagonal Maze - part2 Sky Maze Adventures 1 The Fall - Episode 3 - Code Golf The Labyrinth - Code Golf The Fall - Episode 2 - Code Golf Grid climbing |
| Pathfinding, Graphs |
ADVANCED |
0 |
|
| Patience |
|
1 |
🃏 FreeCell 🃏 |
| Pattern |
|
1 |
Duo combinations |
| Pattern recognition |
ADVANCED |
13 |
Music Scores Vox Codei - Episode 2 Code of the Rings Divine! Find the replacement Trits (Balanced Ternary Computing) Barcode scanner Breach Smile! Frieze! Cheese! Messed up mosaics Vox Codei - Episode 2 - Code Golf Music Scores - Code Golf NATO-alphabet's odd uncles |
| Permutations |
INTERMEDIATE |
13 |
Genome Sequencing Queneau Numbers Photo Booth Transformation Crossword Doubly solved Rubik's cube Kids Blocks Ring the bells Mathematics for big ears Balanced Levers Walk on a Die Genome Sequencing - Code Golf 24: The Long Game Mind Cracker |
| Physics |
INTERMEDIATE |
13 |
Gravity Tumbler Cards castle Sandpile addition Apple tree Stall tilt Particle Detection with Cloud Chamber Equivalent Resistance, Circuit Building 🏐 🏖 Beach Volleyball 🏐 🏖 Cosmic Love Space Shooter Balanced Levers Snooker Ball Collision WW2 Mortar Warfare |
| Pi |
|
1 |
Bailey–Borwein–Plouffe Pi |
| polymorphism |
|
1 |
The parking |
| Polynomials |
ADVANCED |
3 |
Her Majesty's well shared secret 2nd degree polynomial - simple analysis Fibonomials |
| pong |
|
0 |
|
| prefix sum |
|
1 |
Hunger |
| Primes |
INTERMEDIATE |
8 |
Divide the factorial Count of Primes in a number grid Factorials of primes decomposition The Balanced Centrifuge Problem CGFunge Prime Ulam Spiral Goldbach’s Conjecture Eratosthenes' Wallpaper |
| Priority Queue |
INTERMEDIATE |
1 |
Identifying data structure |
| Probabilities |
|
1 |
Conditional probabilities |
| Probability |
INTERMEDIATE |
6 |
Bag of Balls Dice probability calculator Benford's law Markov Text Generation Card Counting when easily distracted Markov ants |
| Puzzle |
|
1 |
Picture Puzzle |
| Queue |
FUNDAMENTALS |
1 |
Identifying data structure |
| Queues |
FUNDAMENTALS |
2 |
War The helpdesk |
| Radix |
INTERMEDIATE |
4 |
Mayan Calculation Numeral system Bijective Numeration Mayan Calculation - Code Golf |
| Random |
|
1 |
Random Time Travel |
| Random number generator |
|
1 |
Simple AI duels |
| Random walk |
|
1 |
Markov ants |
| Range |
|
0 |
|
| Rational Numbers |
INTERMEDIATE |
2 |
Rational Number Tree Continued Fractions |
| Ray Casting |
|
1 |
Let's make a cheap ASCII 3D engine! |
| Reading Comprehension |
|
0 |
|
| Reading the statement |
|
8 |
Hooch Clash Smooth! Smooth Factory A Man with a Plan In Stereo Wave Function Collapse (sans Shannon) The alien business of cows Score a Bridge deal |
| Recursion |
FUNDAMENTALS |
38 |
Dwarfs standing on the shoulders of giants Surface Blunder - 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 Balanced Levers 24 Game L-triominoes Gerrymandering Derivative time !!! - part1 Derivative time !!! - part2 🤖 Robot Reach the voucher Takuzu Solver RUSH HOUR Find the missing plus signs in addition Suguru Solver Killer Sudoku Solver Euclid's Algorithm Fun with CGX Expressions The Resistance - Code Golf Surface - Code Golf Dwarfs standing on the shoulders of giants - Code Golf Mandelbrot Set Approximation Fibonomials Grid climbing Euclid's algorithm with complex numbers |
| Registers |
|
1 |
MCxxxx microcontroller simulation |
| Regression analysis |
ADVANCED |
2 |
Blunder - Episode 3 Blunder - Episode 3 - Code Golf |
| Regular expressions |
INTERMEDIATE |
5 |
Murder in the village! IPv6 Shortener Valid brackets in code Where's Wally Holey Times |
| Remainder Theorem |
ADVANCED |
1 |
Remainder Fantasy |
| Research |
|
0 |
|
| Resource management |
ADVANCED |
12 |
Game of Drones Platinum Rift - Episode 1 Platinum Rift - Episode 2 CodeBusters Ghost in the Cell Code Royale Tower Dereference Crystal Rush Spider Attack Should Bakers be Frugal? Keep Off The Grass Spring Challenge 2023 - Ants |
| 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 |
3 |
Super Computer Legendary Archer Octavius Super Computer - Code Golf |
| Science |
|
0 |
|
| Search |
|
1 |
Frog Exchange |
| Secret sharing |
|
1 |
Her Majesty's well shared secret |
| Seedfinding |
|
1 |
Random Time Travel |
| Sequences |
FUNDAMENTALS |
6 |
Conway Sequence Next car license plate ? Folding Paper Box of Cigars Length of Syracuse Conjecture Sequence Remaining Card |
| Set theory |
FUNDAMENTALS |
1 |
Fun with Set theory |
| Sets |
FUNDAMENTALS |
3 |
Telephone Numbers Guessing n Cheating Telephone Numbers - Code Golf |
| Sexagesimal system |
INTERMEDIATE |
1 |
Hello, World! |
| SHA-256 |
|
1 |
SHA-256 Hash |
| Shortest path |
ADVANCED |
0 |
|
| Shortest path algorithm |
|
0 |
|
| Shortest path problem |
|
1 |
Catching Up |
| Simulated Annealing |
ADVANCED |
3 |
Search Race Travelling Salesman CG's Next Top Model |
| Simulation |
INTERMEDIATE |
43 |
Blunder - 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 Can you save the forest - Episode 2 Space Shooter Snooker Ball Collision Thermal Flying - Episode 1 Block the spreading fire ! Should Bakers be Frugal? Merlin's Magic Square Tiny Forest Chain Reaction Vox Codei - Episode 2 - Code Golf Vox Codei - Episode 1 - Code Golf Roller Coaster - Code Golf Blunder - Episode 1 - Code Golf Chebyshev Orbiting Mirrors Markov ants |
| Sliding window |
|
1 |
Feature Extraction |
| Smooth |
|
2 |
Smooth! Smooth Factory |
| Snell's Law |
|
1 |
🏐 🏖 Beach Volleyball 🏐 🏖 |
| Sorting |
FUNDAMENTALS |
10 |
Add'em Up Dynamic sorting Hunger Games Thomas and the Freight Cars Inversion count Magic String Snake Sort 2D Video comments Roman Sorting BobTheScience and the Food Stack |
| Spock |
|
0 |
|
| SQL |
|
2 |
Parse SQL Queries Remove insert statements |
| Stack |
FUNDAMENTALS |
10 |
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 Ted's compiler Saving Snoopy |
| State machine |
ADVANCED |
12 |
Blunder - Episode 1 CodeBusters Elementary cellular automaton Langton's ant Parsing context-free grammar Code4Life Code a la Mode Is that a possible word? Fireworks Simple AI duels Markov Text Generation Blunder - Episode 1 - Code Golf |
| steganography |
|
1 |
Hidden Messages In Images |
| Steiner Tree |
|
1 |
Binary Extension |
| Streams |
FUNDAMENTALS |
1 |
Smooth Factory |
| string |
FUNDAMENTALS |
4 |
Unary - Code Golf Detective Geek Genetics and Computers - Part 1 No More Pythons, Please! |
| String manipulation |
FUNDAMENTALS |
54 |
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 Place the Parenthesis if then else Valid brackets in code In Stereo Substitution Encoding Caesar is the chief Cooking passion Where's Wally Magic String 3D printer Frame the picture Self Checkout Machine Tricky Number Verifier The broken editor Insert to String Frog Exchange Match DNA Sequence Card Counting when easily distracted Messed up mosaics Saving Snoopy Create 'Turn Here' Signs Make an Atari Font Chain Reaction Tabloid Couple-Names 💕 Fix the spaces Word Search for Programmers Fibonomials The alien business of cows Frequency-Based Decryption NATO-alphabet's odd uncles Furlongs per Fortnight 24: The Long Game What 🌼 is 🌷 your 🌸 garden 💐 worth? Video Assistant Referee |
| Strings |
FUNDAMENTALS |
48 |
ASCII Art Unary 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 In Stereo Substitution Encoding FireControl 3D printer Artificial Emotional Intelligence Blackjack solver Table of Contents Eratosthenes' Wallpaper Fun with CGX Expressions Duo combinations ASCII Art - Code Golf Genome Sequencing - Code Golf Mayan Calculation - Code Golf Number formatting Frequency-Based Decryption String balls |
| Strive for Simplicity |
|
4 |
Robot Show Insert to String Should Bakers be Frugal? Merlin's Magic Square |
| Tables |
|
1 |
Parse SQL Queries |
| Tile-matching |
|
1 |
SameGame |
| Tiling |
|
2 |
Depot organization 3×N Tiling |
| Time |
|
3 |
🏐 🏖 Beach Volleyball 🏐 🏖 Railway Station Clock By train or by car ? |
| Tokens |
|
0 |
|
| 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 |
3 |
Telephone Numbers Prefix code Telephone Numbers - Code Golf |
| Trigonometry |
INTERMEDIATE |
14 |
Defibrillators Mars Lander - Episode 2 TAN Network Mars Lander - Episode 3 Mars Lander Mad Pod Racing Nature of quadrilaterals Fantastic Bits Hello, World! Escaping the cat Nature of triangles Let's make a cheap ASCII 3D engine! WW2 Mortar Warfare Mars Lander - Episode 3 - Code Golf |
| Two pointers |
|
1 |
1000000000D WORLD |
| UCB1 |
|
1 |
Monte Carlo Tree Search exercise |
| UCT |
|
1 |
Monte Carlo Tree Search exercise |
| 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 |