The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 4 days. Why not try and solve them ahead of time?
ASCII Table 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 🇳🇱 916 155 2ms 20 Jan 2025 162nd ovs-code 🇩🇪 915 91 442ms 16 Jan 2024 163rd JayXon 🇺🇸 915 124 1ms 2 Oct 2022 164th MeWhenI 🇻🇦 914 130 4ms 21 May 2023 164th clockworknazo 914 130 3ms 27 Aug 2023 166th ryyyn 🇺🇸 913 94 12ms 15 Jan 2026 167th edsrzf 🇳🇿 912 129 6ms 22 days ago 168th edsrzf 🇳🇿 912 148 129ms 22 Apr 2025 168th sean-niemann 🇺🇸 912 148 133ms 4 Jun 2025 170th MeWhenI 🇻🇦 912 158 279ms 10 Feb 2023 170th KasperKivimaeki 🇫🇮 912 158 266ms 8 Oct 2025 172nd Sakisan 🇧🇪 911 79 1,020ms 1 May 2024 173rd Steffan153 🇫🇮 911 149 104ms 9 Apr 2023 174th sisyphus-ppcg 🇦🇺 910 110 1ms 20 Sep 2023 175th jacobly0 🇺🇸 910 113 2ms 16 Aug 2023 176th primo-ppcg 🇹🇭 910 123 37ms 17 Jun 2022 177th canissimia 🇦🇶 910 182 1ms 17 Jul 2022 178th m-tkach 🇺🇦 909 169 25ms 29 Jan 2024 179th GrayJoKing 🇦🇺 908 125 1ms 25 Aug 2023 180th MeWhenI 🇻🇦 907 118 7ms 4 Jan 2025 181st edsrzf 🇳🇿 907 129 100ms 3 Dec 2025 182nd kg583 🇺🇸 906 121 6ms 16 Jul 2025 183rd sean-niemann 🇺🇸 906 143 483ms 26 Sep 2025 184th HahUK 906 159 287ms 10 Nov 2025 185th dcgjb 905 83 243ms 10 Jan 2024 185th DialFrost 🇸🇬 905 83 273ms 10 Oct 2024 187th lifthrasiir 🇰🇷 905 92 547ms 2 Dec 2024 188th sean-niemann 🇺🇸 905 123 75ms 19 Apr 2025 188th jipsong 🇩🇪 905 123 79ms 1 May 2025 190th GrayJoKing 🇦🇺 905 130 6ms 25 days ago 191st edsrzf 🇳🇿 904 113 4ms 22 Oct 2025 191st kg583 🇺🇸 904 113 4ms 12 Feb 2026 193rd lynn 904 139 29ms 18 Jul 2023 193rd Steffan153 🇫🇮 904 139 30ms 20 Jul 2024 195th kg583 🇺🇸 904 145 3ms 12 days ago 196th GrayJoKing 🇦🇺 903 121 142ms 11 Aug 2024 197th emgordon154 902 111 2,600ms 18 Mar 2025 198th Lydxn 🇨🇦 902 114 1ms 27 Mar 2022 199th GrayJoKing 🇦🇺 901 99 4ms 7 Sep 2024 200th Steffan153 🇫🇮 901 111 2ms 3 hours ago 201st Shanethegamer 🇺🇸 901 121 1,265ms 20 Mar 2023 202nd GrayJoKing 🇦🇺 900 132 3ms 26 Aug 2023 203rd aspiringLich 900 150 133ms 1 Oct 2023 204th Lydxn 🇨🇦 899 129 11ms 28 Mar 2022 204th Steffan153 🇫🇮 899 129 11ms 10 Jun 2024 206th sean-niemann 🇺🇸 899 135 439ms 11 Apr 2025 207th edsrzf 🇳🇿 898 94 737ms 14 Feb 2026 208th GrayJoKing 🇦🇺 898 140 29ms 1 Apr 2023 209th pardouin 🇫🇷 897 84 36ms 16 Sep 2025 210th primo-ppcg 🇹🇭 897 118 68ms 5 Apr 2025 211th sean-niemann 🇺🇸 896 125 39ms 3 Aug 2023 212th clockworknazo 896 144 2ms 8 Oct 2022 213th kg583 🇺🇸 895 93 402ms 11 Jan 2026 214th kkoenig 895 161 292ms 1 Jan 2024 215th bricknellj 894 96 9ms 26 May 2022 215th nwellnhof 🇩🇪 894 96 9ms 6 Dec 2022 215th ovs-code 🇩🇪 894 96 9ms 26 Nov 2023 215th 5cw 🇺🇸 894 96 10ms 13 May 2024 215th lifthrasiir 🇰🇷 894 96 9ms 9 Nov 2024 220th xsot 🇸🇬 894 101 5ms 8 Jun 2025 221st Sakisan 🇧🇪 894 128 112ms 2 Jul 2022 222nd JayXon 🇺🇸 894 188 1,690ms 22 Apr 2024 223rd edsrzf 🇳🇿 893 127 2ms 24 Oct 2025 224th sean-niemann 🇺🇸 893 130 9ms 11 Apr 2025 225th sean-niemann 🇺🇸 893 152 122ms 8 Jun 2025 226th SirBogman 🇺🇸 892 77 2ms 6 Dec 2022 227th sean-niemann 🇺🇸 892 114 155ms 11 Apr 2025 228th JayXon 🇺🇸 892 136 500ms 26 Nov 2023 229th Shanethegamer 🇺🇸 891 141 28ms 20 Mar 2023 230th GrayJoKing 🇦🇺 890 80 120ms 9 Apr 2022 231st retrohun 889 97 4ms 20 Nov 2022 232nd jupj 🇫🇮 889 162 282ms 12 Aug 2022 232nd emplv 🇱🇻 889 162 273ms 3 Oct 2023 234th edsrzf 🇳🇿 888 122 6ms 12 Feb 2026 234th kg583 🇺🇸 888 122 7ms 16 days ago 234th zacjl 888 122 7ms 16 days ago 237th ovs-code 🇩🇪 888 123 211ms 4 Jul 2024 238th MeWhenI 🇻🇦 888 179 1,432ms 28 Mar 2025 239th Steffan153 🇫🇮 887 146 394ms 11 Feb 2026 240th m-tkach 🇺🇦 887 160 2ms 11 Jun 2025 First Prev 161–240 of 2,336 Next Last