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 78th edsrzf 🇳🇿 872 99 1,238ms 28 Feb 2026 78th emgordon154 872 99 1,153ms 27 days ago 83rd Steffan153 🇫🇮 871 163 409ms 23 days ago 84th KasperKivimaeki 🇫🇮 870 112 2ms 24 days ago 85th pardouin 🇫🇷 870 167 283ms 27 Feb 2026 85th edsrzf 🇳🇿 870 167 287ms 27 days ago 85th Steffan153 🇫🇮 870 167 289ms 25 days ago 85th GolfingSuccess 🇬🇷 870 167 286ms 7 days ago 89th Steffan153 🇫🇮 867 94 786ms 27 days ago 90th sean-niemann 🇺🇸 866 164 378ms 18 days ago 91st KasperKivimaeki 🇫🇮 865 168 301ms 25 days ago 92nd bitsandbeyond 🇳🇱 864 81 395ms 23 Feb 2026 93rd edsrzf 🇳🇿 864 128 2,783ms 24 days ago 94th nwellnhof 🇩🇪 862 55 150ms 27 Feb 2026 95th targrik 862 106 6ms 8 days ago 96th MeWhenI 🇻🇦 861 165 347ms 23 days ago 97th pardouin 🇫🇷 858 129 2,711ms 24 days ago 98th rucin93 🇵🇱 857 114 2ms 1 Jan 2026 98th GolfingSuccess 🇬🇷 857 114 2ms 27 Feb 2026 98th edsrzf 🇳🇿 857 114 2ms 27 days ago 101st ovs-code 🇩🇪 854 104 8ms 27 Feb 2026 102nd Steffan153 🇫🇮 854 120 120ms 27 days ago 103rd error256 852 124 13ms 4 days ago 104th dokutan 851 87 347ms 14 days ago 105th Steffan153 🇫🇮 850 128 5ms 26 days ago 105th edsrzf 🇳🇿 850 128 5ms 26 days ago 107th GolfingSuccess 🇬🇷 850 143 455ms 19 Nov 2025 108th UnderKoen 🇳🇱 850 148 5ms 3 days ago 109th kg583 🇺🇸 849 129 8ms 26 Feb 2026 110th ovs-code 🇩🇪 848 113 90ms 21 Nov 2025 111th edsrzf 🇳🇿 848 132 7ms 18 days ago 112th lynn 848 154 153ms 17 days ago 112th edsrzf 🇳🇿 848 154 149ms 10 days ago 114th kumavale 848 183 226ms 19 Nov 2025 115th Steffan153 🇫🇮 847 133 29ms 26 days ago 116th albanian-laundromat 847 157 43ms 23 days ago 117th edsrzf 🇳🇿 846 108 6ms 24 days ago 118th FlorianCassayre 🇫🇷 845 96 10ms 14 days ago 119th weliveinhell 🇭🇹 845 99 11ms 26 days ago 120th edsrzf 🇳🇿 845 165 400ms 23 days ago 121st edsrzf 🇳🇿 845 168 386ms 23 days ago 122nd kg583 🇺🇸 843 129 4ms 26 days ago 123rd KatieLG 🇬🇧 842 88 368ms 28 Feb 2026 124th GrayJoKing 🇦🇺 842 133 7ms 24 days ago 125th MeWhenI 🇻🇦 842 158 44ms 23 days ago 126th edsrzf 🇳🇿 841 149 1,441ms 20 days ago 127th edsrzf 🇳🇿 840 122 117ms 27 days ago 128th edsrzf 🇳🇿 839 150 5ms 3 days ago 129th edsrzf 🇳🇿 839 188 82ms 18 hours ago 129th Steffan153 🇫🇮 839 188 76ms 18 hours ago 131st MeWhenI 🇻🇦 839 191 43ms 23 days ago 132nd Lv0Sys 🇵🇱 838 157 430ms 28 Feb 2026 133rd albanian-laundromat 837 100 10ms 28 Feb 2026 133rd Maznek 837 100 10ms 26 days ago 135th ovs-code 🇩🇪 837 156 138ms 21 Nov 2025 136th error256 836 108 63ms 20 days ago 137th albanian-laundromat 835 174 284ms 24 Feb 2026 138th MeWhenI 🇻🇦 833 61 35ms 9 days ago 139th ovs-code 🇩🇪 833 117 2ms 21 Nov 2025 140th edsrzf 🇳🇿 833 141 42ms 25 days ago 141st snyderek 🇺🇸 832 146 447ms 20 days ago 142nd edsrzf 🇳🇿 830 132 11ms 28 Feb 2026 142nd CLOStrophobic 🇮🇹 830 132 9ms 29 hours ago 144th GolfingSuccess 🇬🇷 830 171 377ms 27 days ago 145th MeWhenI 🇻🇦 829 150 10ms 23 days ago 146th edsrzf 🇳🇿 828 154 102ms 28 Feb 2026 147th Steffan153 🇫🇮 826 84 2ms 18 days ago 148th Mukundan314 826 118 2ms 19 Nov 2025 149th albanian-laundromat 826 194 40ms 23 days ago 150th 2bular 825 85 33ms 20 Nov 2025 151st edsrzf 🇳🇿 825 124 4ms 28 Feb 2026 152nd MeWhenI 🇻🇦 824 165 130ms 23 days ago 153rd edsrzf 🇳🇿 823 137 30ms 26 days ago 154th edsrzf 🇳🇿 823 168 87ms 23 days ago 155th GolfingSuccess 🇬🇷 822 192 74ms 7 days ago 156th pardouin 🇫🇷 821 148 450ms 27 days ago 157th h3ra993huskp 🇯🇵 821 173 397ms 27 days ago 158th Lv0Sys 🇵🇱 821 177 287ms 28 Feb 2026 159th edsrzf 🇳🇿 820 182 3ms 18 days ago 160th CaedenHarper 🇨🇦 816 178 276ms 26 Feb 2026 First Prev 81–160 of 376 Next Last