The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 9 hours. 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 1,168ms 1 Mar 2026 162nd kg583 🇺🇸 857 129 8ms 26 Feb 2026 163rd UnderKoen 🇳🇱 857 148 5ms 6 days ago 164th edsrzf 🇳🇿 856 108 6ms 27 days ago 165th edsrzf 🇳🇿 856 132 7ms 21 days ago 166th Shanethegamer 🇺🇸 856 136 31ms 21 Nov 2025 167th GolfingSuccess 🇬🇷 856 143 447ms 19 Nov 2025 168th ovs-code 🇩🇪 855 95 457ms 27 Feb 2026 169th Steffan153 🇫🇮 855 133 29ms 2 Mar 2026 170th lynn 855 154 153ms 19 days ago 170th edsrzf 🇳🇿 855 154 149ms 12 days ago 172nd zacjl 854 119 7ms 27 days ago 173rd albanian-laundromat 854 157 43ms 26 days ago 174th IanUtley 853 125 15ms 22 hours ago 175th kumavale 853 183 226ms 19 Nov 2025 176th MeWhenI 🇻🇦 852 103 10ms 26 days ago 177th snoozingnewt 🇨🇦 852 113 431ms 20 days ago 177th dokutan 852 113 406ms 18 days ago 179th kg583 🇺🇸 851 129 4ms 1 Mar 2026 180th edsrzf 🇳🇿 851 165 400ms 26 days ago 181st moustave 850 137 13ms 22 days ago 182nd edsrzf 🇳🇿 850 168 386ms 26 days ago 183rd GrayJoKing 🇦🇺 849 133 7ms 27 days ago 184th edsrzf 🇳🇿 848 122 117ms 1 Mar 2026 185th edsrzf 🇳🇿 848 149 1,441ms 23 days ago 186th MeWhenI 🇻🇦 848 158 44ms 26 days ago 187th error256 847 108 63ms 22 days ago 188th saito-ta 🇯🇵 847 120 2ms 25 days ago 189th pardouin 🇫🇷 845 114 386ms 15 Feb 2026 189th kg583 🇺🇸 845 114 378ms 26 Feb 2026 189th MeWhenI 🇻🇦 845 114 414ms 1 Mar 2026 192nd edsrzf 🇳🇿 845 150 5ms 6 days ago 193rd Lv0Sys 🇵🇱 845 157 430ms 28 Feb 2026 194th edsrzf 🇳🇿 845 188 77ms 3 days ago 194th Steffan153 🇫🇮 845 188 76ms 3 days ago 196th sean-niemann 🇺🇸 844 101 161ms 3 Mar 2026 197th nwellnhof 🇩🇪 844 104 9ms 27 Feb 2026 198th ovs-code 🇩🇪 844 156 138ms 21 Nov 2025 199th MeWhenI 🇻🇦 844 191 43ms 26 days ago 200th edsrzf 🇳🇿 841 141 42ms 3 Mar 2026 201st ovs-code 🇩🇪 840 121 2ms 21 Nov 2025 202nd albanian-laundromat 840 174 284ms 24 Feb 2026 203rd edsrzf 🇳🇿 838 132 11ms 28 Feb 2026 203rd CLOStrophobic 🇮🇹 838 132 9ms 4 days ago 205th snyderek 🇺🇸 838 146 447ms 23 days ago 206th Steffan153 🇫🇮 837 84 2ms 21 days ago 207th 2bular 837 85 33ms 20 Nov 2025 208th emgordon154 837 115 482ms 1 Mar 2026 209th MeWhenI 🇻🇦 837 150 10ms 26 days ago 210th voytxt 🇨🇿 836 105 9ms 15 Jan 2026 211th edsrzf 🇳🇿 835 124 4ms 28 Feb 2026 212th edsrzf 🇳🇿 835 154 102ms 28 Feb 2026 213th GolfingSuccess 🇬🇷 835 171 377ms 28 Feb 2026 214th error256 833 122 8ms 12 days ago 215th ZakkkkAttackkkk 🇵🇭 832 140 30ms 23 days ago 216th MeWhenI 🇻🇦 831 165 122ms 26 days ago 217th albanian-laundromat 831 194 40ms 26 days ago 218th edsrzf 🇳🇿 830 137 30ms 1 Mar 2026 219th edsrzf 🇳🇿 830 168 87ms 25 days ago 220th pardouin 🇫🇷 827 148 450ms 1 Mar 2026 221st GolfingSuccess 🇬🇷 827 192 74ms 10 days ago 222nd Aquateraneal 🇺🇸 826 141 20ms 9 days ago 223rd h3ra993huskp 🇯🇵 826 173 397ms 1 Mar 2026 224th Lv0Sys 🇵🇱 826 177 287ms 28 Feb 2026 225th edsrzf 🇳🇿 826 182 3ms 21 days ago 226th emgordon154 822 58 44ms 1 Mar 2026 227th edsrzf 🇳🇿 822 197 60ms 23 days ago 228th CaedenHarper 🇨🇦 821 178 276ms 26 Feb 2026 229th FlorianCassayre 🇫🇷 820 142 10ms 16 days ago 230th emgordon154 820 283 1,549ms 1 Mar 2026 231st kg583 🇺🇸 819 194 74ms 11 days ago 232nd jkelly467 814 137 2,654ms 2 Mar 2026 233rd BREMAUCY 🇫🇷 814 143 11ms 27 days ago 234th Program-Pi 813 108 10ms 10 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 22 days ago 239th albanian-laundromat 808 105 1,081ms 1 Mar 2026 240th denkyuu1 807 82 41ms 6 days ago First Prev 161–240 of 379 Next Last