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 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 Steffan153 🇫🇮 857 99 773ms 27 days ago 162nd kg583 🇺🇸 857 129 8ms 26 Feb 2026 163rd UnderKoen 🇳🇱 857 148 5ms 3 days ago 164th edsrzf 🇳🇿 856 108 6ms 24 days ago 165th edsrzf 🇳🇿 856 132 7ms 18 days ago 166th Shanethegamer 🇺🇸 856 136 31ms 21 Nov 2025 167th GolfingSuccess 🇬🇷 856 143 455ms 19 Nov 2025 168th ovs-code 🇩🇪 855 95 457ms 27 Feb 2026 169th Steffan153 🇫🇮 855 133 29ms 26 days ago 170th lynn 855 154 153ms 17 days ago 170th edsrzf 🇳🇿 855 154 149ms 9 days ago 172nd zacjl 854 119 7ms 24 days ago 173rd albanian-laundromat 854 157 43ms 23 days ago 174th kumavale 853 183 226ms 19 Nov 2025 175th MeWhenI 🇻🇦 852 103 11ms 23 days ago 176th snoozingnewt 🇨🇦 852 113 431ms 18 days ago 176th dokutan 852 113 406ms 15 days ago 178th kg583 🇺🇸 851 129 4ms 26 days ago 179th edsrzf 🇳🇿 851 165 400ms 23 days ago 180th moustave 850 137 13ms 19 days ago 181st edsrzf 🇳🇿 850 168 386ms 23 days ago 182nd GrayJoKing 🇦🇺 849 133 7ms 24 days ago 183rd edsrzf 🇳🇿 848 122 117ms 27 days ago 184th edsrzf 🇳🇿 848 149 1,441ms 20 days ago 185th MeWhenI 🇻🇦 848 158 44ms 23 days ago 186th error256 847 108 63ms 19 days ago 187th saito-ta 🇯🇵 847 120 2ms 22 days ago 188th pardouin 🇫🇷 845 114 386ms 15 Feb 2026 188th kg583 🇺🇸 845 114 378ms 26 Feb 2026 188th MeWhenI 🇻🇦 845 114 414ms 27 days ago 191st edsrzf 🇳🇿 845 150 5ms 3 days ago 192nd Lv0Sys 🇵🇱 845 157 430ms 27 days ago 193rd edsrzf 🇳🇿 845 188 82ms 15 hours ago 193rd Steffan153 🇫🇮 845 188 76ms 14 hours ago 195th sean-niemann 🇺🇸 844 101 161ms 25 days ago 196th nwellnhof 🇩🇪 844 104 11ms 27 Feb 2026 197th ovs-code 🇩🇪 844 156 138ms 21 Nov 2025 198th MeWhenI 🇻🇦 844 191 43ms 23 days ago 199th edsrzf 🇳🇿 841 141 42ms 25 days ago 200th ovs-code 🇩🇪 840 121 2ms 21 Nov 2025 201st albanian-laundromat 840 174 284ms 24 Feb 2026 202nd edsrzf 🇳🇿 838 132 11ms 28 Feb 2026 202nd CLOStrophobic 🇮🇹 838 132 9ms 26 hours ago 204th snyderek 🇺🇸 838 146 447ms 20 days ago 205th Steffan153 🇫🇮 837 84 2ms 18 days ago 206th 2bular 837 85 33ms 20 Nov 2025 207th emgordon154 837 115 482ms 27 days ago 208th MeWhenI 🇻🇦 837 150 10ms 23 days ago 209th voytxt 🇨🇿 836 105 11ms 15 Jan 2026 210th edsrzf 🇳🇿 835 124 4ms 28 Feb 2026 211th edsrzf 🇳🇿 835 154 102ms 27 days ago 212th GolfingSuccess 🇬🇷 835 171 377ms 27 days ago 213th error256 833 122 8ms 9 days ago 214th ZakkkkAttackkkk 🇵🇭 831 140 30ms 20 days ago 215th MeWhenI 🇻🇦 831 165 130ms 23 days ago 216th albanian-laundromat 831 194 40ms 23 days ago 217th edsrzf 🇳🇿 830 137 30ms 26 days ago 218th edsrzf 🇳🇿 830 168 87ms 22 days ago 219th pardouin 🇫🇷 827 148 450ms 27 days ago 220th GolfingSuccess 🇬🇷 827 192 74ms 7 days ago 221st Aquateraneal 🇺🇸 826 141 20ms 6 days ago 222nd h3ra993huskp 🇯🇵 826 173 397ms 27 days ago 223rd Lv0Sys 🇵🇱 826 177 287ms 27 days ago 224th edsrzf 🇳🇿 826 182 3ms 18 days ago 225th emgordon154 822 58 44ms 27 days ago 226th edsrzf 🇳🇿 822 197 60ms 20 days ago 227th CaedenHarper 🇨🇦 821 178 276ms 26 Feb 2026 228th FlorianCassayre 🇫🇷 820 142 10ms 13 days ago 229th emgordon154 820 283 1,692ms 27 days ago 230th kg583 🇺🇸 819 194 74ms 9 days ago 231st IanUtley 814 131 14ms 4 days ago 232nd jkelly467 814 137 2,677ms 25 days ago 233rd BREMAUCY 🇫🇷 814 143 11ms 24 days ago 234th Program-Pi 813 108 17ms 7 days ago 235th GolfingSuccess 🇬🇷 813 125 2ms 19 Nov 2025 236th GolfingSuccess 🇬🇷 811 105 168ms 27 Feb 2026 237th albanian-laundromat 811 171 4ms 28 Jan 2026 238th albanian-laundromat 809 177 196ms 19 days ago 239th albanian-laundromat 808 105 781ms 27 days ago 240th denkyuu1 807 82 41ms 3 days ago First Prev 161–240 of 378 Next Last