The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 4 days. Why not try and solve them ahead of time?
Maze in Python in chars. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 81st AaLongCode 467 182 1,134ms 2 Nov 2023 82nd nyvyon 462 184 423ms 2 Nov 2023 83rd tri1212 🇻🇳 459 185 63ms 15 Jul 2024 84th FoxInTheClouds 455 187 434ms 4 Feb 2026 85th logvp 445 191 50ms 5 Jan 2024 86th OllieBoyne 🇬🇧 443 192 4,173ms 31 Jan 2023 87th JunkIce 436 195 25ms 13 Feb 2025 87th anter69 🇭🇺 436 195 86ms 10 Jul 2025 89th yzhs 🇩🇪 434 196 17ms 23 Jun 2023 90th commandz0 🇺🇸 429 198 16ms 25 Oct 2023 91st klixel 🇨🇦 427 199 18ms 26 Nov 2025 92nd ZakkkkAttackkkk 🇵🇭 423 201 116ms 14 Nov 2023 93rd roguh 🇬🇹 421 202 25ms 7 Jan 2024 94th maxgodfrey2004 🇨🇦 419 203 17ms 17 Feb 2025 95th TobyBoyne 🇬🇧 413 206 15ms 27 Jan 2023 95th CaedenHarper 🇨🇦 413 206 39ms 20 Nov 2025 97th Eilonlif 🇮🇱 394 216 59ms 11 Jan 2023 98th rak1507 🇬🇧 392 217 53ms 5 Jan 2023 98th Bmrl7 392 217 52ms 4 Mar 2024 100th msbranicky 390 218 48ms 9 Aug 2023 101st SniperSmiley 🇺🇸 366 232 39ms 18 Feb 2023 102nd JOrE20 365 233 26ms 26 Feb 2026 103rd colraw 🇸🇪 354 240 12ms 21 Jan 2023 104th yuchuehw 353 241 31ms 13 Feb 2024 105th RaBa21 🇭🇺 344 247 16ms 18 Jul 2025 106th Lv0Sys 🇵🇱 331 257 15ms 25 Feb 2026 107th mathisfun271 327 260 17ms 5 Mar 2024 108th eiburns 307 277 19ms 26 Oct 2023 109th inverseLorentz 🇦🇺 288 295 15ms 4 May 2024 110th robin-scragg 283 300 15ms 25 Oct 2025 111th smilesformiles3 264 322 230ms 23 Jun 2025 112th neihousaigaai 257 331 18ms 24 Nov 2024 113th DialFrost 🇸🇬 237 358 14ms 19 Jan 2026 114th thomasklunker 236 360 16ms 5 Feb 2023 115th madex 🇩🇪 234 364 18ms 24 Mar 2025 116th CutSandstone 222 383 474ms 4 Jul 2024 117th mantrades 220 387 19ms 4 Dec 2024 118th TheLazySquid 219 388 17ms 9 Jan 2023 119th TheZwierzLF 🇵🇱 216 393 33ms 11 Dec 2025 120th mbittner20 196 433 58ms 12 May 2025 121st YAJUE114514 191 444 23ms 12 Dec 2025 122nd ComputerKWasTaken 🇺🇸 186 456 14ms 20 Jan 2025 123rd alemelis 179 474 17ms 18 Oct 2024 124th tomh1012 176 483 19ms 16 days ago 125th jameswmccarty 174 488 29ms 11 Jul 2024 126th MiranDaniel 🇨🇿 171 496 17ms 2 Sep 2023 127th croc54 165 516 17ms 12 Jan 2025 128th KatieLG-Transpiler 🇬🇧 146 581 81ms 4 Jan 2023 129th arnimattr 146 583 25ms 5 Jul 2023 130th TaserTheFox 🇺🇸 115 736 387ms 11 May 2023 131st Zhenyu-Bo 101 838 13ms 31 Jul 2025 132nd joshuamkite 64 1,334 20ms 2 Sep 2023 133rd AidanWalter 55 1,556 18ms 28 Nov 2025 134th zt14427 16 5,308 100ms 28 Dec 2024 First Prev 81–134 of 134
