The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 3 days. Why not try and solve them ahead of time?
Continued Fractions in all languages 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 161st edsrzf 🇳🇿 816 197 60ms 20 days ago 162nd emgordon154 816 283 1,692ms 27 days ago 163rd kg583 🇺🇸 813 194 74ms 9 days ago 164th MeWhenI 🇻🇦 812 103 11ms 23 days ago 165th saito-ta 🇯🇵 812 120 2ms 22 days ago 166th ovs-code 🇩🇪 811 94 457ms 27 Feb 2026 167th albanian-laundromat 811 184 3ms 19 days ago 168th jkelly467 807 137 2,677ms 26 days ago 169th IanUtley 806 131 14ms 5 days ago 170th emgordon154 805 58 44ms 27 days ago 171st nwellnhof 🇩🇪 805 104 11ms 27 Feb 2026 172nd albanian-laundromat 804 171 4ms 28 Jan 2026 173rd albanian-laundromat 802 177 196ms 20 days ago 173rd kmathis22 802 177 410ms 18 days ago 175th CaedenHarper 🇨🇦 798 178 419ms 6 days ago 176th voytxt 🇨🇿 797 105 11ms 15 Jan 2026 177th LostSyntax21 🇬🇧 794 64 38ms 27 days ago 178th sean-niemann 🇺🇸 794 153 450ms 23 days ago 179th albanian-laundromat 793 216 9ms 29 hours ago 180th albanian-laundromat 792 157 11ms 23 days ago 181st dokutan 791 103 884ms 9 hours ago 182nd acotis 791 196 559ms 28 Feb 2026 183rd snoozingnewt 🇨🇦 787 162 117ms 21 days ago 184th Natanaelel 🇸🇪 785 92 3ms 27 Feb 2026 185th MeWhenI 🇻🇦 785 110 1,252ms 23 days ago 186th albanian-laundromat 784 205 59ms 20 days ago 187th kg583 🇺🇸 783 150 42ms 19 Nov 2025 188th canissimia 🇦🇶 783 279 2ms 16 days ago 189th emgordon154 782 107 11ms 27 days ago 190th GolfingSuccess 🇬🇷 780 125 2ms 19 Nov 2025 191st albanian-laundromat 779 89 2ms 28 Feb 2026 192nd emgordon154 779 114 6ms 27 days ago 193rd emgordon154 779 318 1,699ms 27 days ago 194th albanian-laundromat 777 175 145ms 23 days ago 195th albanian-laundromat 777 178 89ms 23 days ago 196th JRaspass 🇬🇧 776 93 3ms 27 Feb 2026 197th albanian-laundromat 776 105 781ms 27 days ago 198th Program-Pi 775 108 17ms 8 days ago 199th pardouin 🇫🇷 774 126 2ms 27 days ago 199th Steffan153 🇫🇮 774 126 2ms 25 days ago 201st Natanaelel 🇸🇪 773 169 139ms 22 days ago 202nd albanian-laundromat 773 299 1,421ms 25 days ago 203rd albanian-laundromat 772 415 12ms 26 days ago 204th JOrE20 768 109 12ms 23 Feb 2026 205th pardouin 🇫🇷 768 185 411ms 27 days ago 206th JOrE20 758 107 11ms 27 Feb 2026 207th CaedenHarper 🇨🇦 755 108 888ms 24 days ago 208th Yax42 🇫🇷 751 157 483ms 13 Jan 2026 209th m-tkach 🇺🇦 749 168 5ms 24 days ago 210th emgordon154 748 176 520ms 27 days ago 211th voytxt 🇨🇿 748 309 1,463ms 6 Feb 2026 212th tailorspy 745 163 463ms 22 days ago 213th emgordon154 741 151 7ms 22 days ago 214th anter69 🇭🇺 736 69 63ms 27 Nov 2025 215th LostSyntax21 🇬🇧 732 219 42ms 27 days ago 216th dokutan 731 140 2ms 22 days ago 217th helbling 🇨🇭 728 115 10ms 25 days ago 218th GolfingSuccess 🇬🇷 728 145 17ms 7 days ago 219th edsrzf 🇳🇿 728 213 238ms 24 days ago 220th BambooleanLogic 🇸🇪 721 116 13ms 26 days ago 220th CaedenHarper 🇨🇦 721 116 10ms 24 days ago 220th gigaprofisi 🇺🇸 721 116 10ms 14 days ago 223rd albanian-laundromat 716 175 1,404ms 24 days ago 224th ovs-code 🇩🇪 715 71 37ms 19 Nov 2025 224th Natanaelel 🇸🇪 715 71 36ms 26 Feb 2026 224th D-MOVE 🇵🇭 715 71 37ms 28 Feb 2026 224th sean-niemann 🇺🇸 715 71 38ms 18 days ago 224th sisyphus-ppcg 🇦🇺 715 71 35ms 12 days ago 229th Matter1024 🇮🇳 715 184 522ms 19 Feb 2026 230th Chinay-Domitrix 🇺🇸 714 155 2,620ms 26 days ago 231st snoozingnewt 🇨🇦 710 135 127ms 27 days ago 232nd pardouin 🇫🇷 710 166 485ms 27 days ago 233rd albanian-laundromat 707 145 120ms 26 Feb 2026 234th snoozingnewt 🇨🇦 706 227 42ms 23 days ago 235th error256 705 72 39ms 27 Feb 2026 236th zacjl 702 119 7ms 25 days ago 237th zakariamouhid 697 120 14ms 26 days ago 237th Just4FunCoder 697 120 11ms 18 days ago 239th npc1234cyber 696 73 37ms 27 days ago 240th albanian-laundromat 696 140 2ms 2 days ago First Prev 161–240 of 376 Next Last