The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 6 days. Why not try and solve them ahead of time?
Continued Fractions in all languages in bytes. 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 Bytes Time Submitted 161st UnderKoen 🇳🇱 857 148 5ms 6 hours ago 162nd edsrzf 🇳🇿 856 108 6ms 21 days ago 163rd edsrzf 🇳🇿 856 132 7ms 15 days ago 164th Shanethegamer 🇺🇸 856 136 31ms 21 Nov 2025 165th GolfingSuccess 🇬🇷 856 143 455ms 19 Nov 2025 166th ovs-code 🇩🇪 855 95 457ms 25 days ago 167th Steffan153 🇫🇮 855 133 29ms 23 days ago 168th lynn 855 154 153ms 14 days ago 168th edsrzf 🇳🇿 855 154 149ms 6 days ago 170th zacjl 854 119 7ms 21 days ago 171st albanian-laundromat 854 157 43ms 20 days ago 172nd kumavale 853 183 222ms 19 Nov 2025 173rd MeWhenI 🇻🇦 852 103 11ms 20 days ago 174th snoozingnewt 🇨🇦 852 113 431ms 15 days ago 174th dokutan 852 113 406ms 12 days ago 176th kg583 🇺🇸 851 129 4ms 23 days ago 177th edsrzf 🇳🇿 851 165 400ms 20 days ago 178th edsrzf 🇳🇿 850 168 386ms 20 days ago 179th GrayJoKing 🇦🇺 849 133 7ms 21 days ago 180th moustave 849 137 13ms 16 days ago 181st edsrzf 🇳🇿 848 122 117ms 24 days ago 182nd edsrzf 🇳🇿 848 149 1,441ms 17 days ago 183rd MeWhenI 🇻🇦 848 158 44ms 20 days ago 184th error256 847 108 63ms 16 days ago 185th saito-ta 🇯🇵 847 120 2ms 19 days ago 186th kg583 🇺🇸 847 129 8ms 26 days ago 187th pardouin 🇫🇷 845 114 386ms 15 Feb 2026 187th kg583 🇺🇸 845 114 378ms 26 days ago 187th MeWhenI 🇻🇦 845 114 414ms 24 days ago 190th edsrzf 🇳🇿 845 150 5ms 7 hours ago 191st Lv0Sys 🇵🇱 845 157 430ms 25 days ago 192nd sean-niemann 🇺🇸 844 101 161ms 22 days ago 193rd nwellnhof 🇩🇪 844 104 11ms 26 days ago 194th ovs-code 🇩🇪 844 156 138ms 21 Nov 2025 195th MeWhenI 🇻🇦 844 191 43ms 20 days ago 196th edsrzf 🇳🇿 841 141 42ms 22 days ago 197th ovs-code 🇩🇪 840 121 2ms 21 Nov 2025 198th albanian-laundromat 840 174 284ms 24 Feb 2026 199th snyderek 🇺🇸 838 146 447ms 17 days ago 200th Steffan153 🇫🇮 837 84 2ms 15 days ago 201st 2bular 837 85 33ms 20 Nov 2025 202nd emgordon154 837 115 482ms 24 days ago 203rd MeWhenI 🇻🇦 837 150 10ms 20 days ago 204th voytxt 🇨🇿 836 105 11ms 15 Jan 2026 205th edsrzf 🇳🇿 835 124 4ms 25 days ago 206th edsrzf 🇳🇿 835 154 102ms 24 days ago 207th GolfingSuccess 🇬🇷 835 171 377ms 24 days ago 208th edsrzf 🇳🇿 835 190 76ms 3 days ago 209th error256 833 122 8ms 6 days ago 210th ZakkkkAttackkkk 🇵🇭 831 140 30ms 17 days ago 211th MeWhenI 🇻🇦 831 165 119ms 20 days ago 212th albanian-laundromat 831 194 40ms 20 days ago 213th edsrzf 🇳🇿 830 137 30ms 23 days ago 214th edsrzf 🇳🇿 830 168 87ms 19 days ago 215th edsrzf 🇳🇿 828 132 11ms 25 days ago 216th pardouin 🇫🇷 827 148 450ms 24 days ago 217th GolfingSuccess 🇬🇷 827 192 74ms 4 days ago 218th h3ra993huskp 🇯🇵 826 173 397ms 24 days ago 219th Lv0Sys 🇵🇱 826 177 287ms 25 days ago 220th edsrzf 🇳🇿 826 182 3ms 15 days ago 221st Aquateraneal 🇺🇸 825 141 20ms 3 days ago 222nd emgordon154 822 58 44ms 24 days ago 223rd edsrzf 🇳🇿 822 197 60ms 17 days ago 224th CaedenHarper 🇨🇦 821 178 276ms 26 days ago 225th FlorianCassayre 🇫🇷 820 142 10ms 10 days ago 226th emgordon154 820 283 1,413ms 24 days ago 227th kg583 🇺🇸 818 194 74ms 6 days ago 228th IanUtley 814 131 14ms 2 days ago 229th jkelly467 814 137 2,677ms 22 days ago 230th BREMAUCY 🇫🇷 814 143 11ms 21 days ago 231st Program-Pi 813 108 17ms 4 days ago 232nd GolfingSuccess 🇬🇷 813 125 2ms 19 Nov 2025 233rd GolfingSuccess 🇬🇷 811 105 168ms 25 days ago 234th albanian-laundromat 811 171 4ms 28 Jan 2026 235th albanian-laundromat 809 177 196ms 16 days ago 236th albanian-laundromat 808 105 781ms 24 days ago 237th denkyuu1 807 82 41ms 13 hours ago 238th kmathis22 807 177 410ms 15 days ago 239th pardouin 🇫🇷 806 126 2ms 24 days ago 239th Steffan153 🇫🇮 806 126 2ms 21 days ago First Prev 161–240 of 374 Next Last