The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 2 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 713th LvLError 747 115 10ms 29 May 2025 722nd cmayer777 747 161 62ms 14 Oct 2022 723rd emgordon154 747 190 1ms 9 Jun 2025 724th stackofbears 746 101 32ms 6 Feb 2024 724th tatzyr 🇯🇵 746 101 36ms 9 Feb 2025 726th edsrzf 🇳🇿 746 121 4ms 5 Mar 2025 727th Phil-RGOMEGA 746 152 2ms 4 May 2023 728th JGDoerrer 746 181 137ms 20 Dec 2022 729th elgan65536 🇺🇸 745 138 2ms 2 Mar 2024 729th dokutan 745 138 2ms 30 Mar 2025 729th Maltaran 🇵🇱 745 138 2ms 26 days ago 732nd Shanethegamer 🇺🇸 745 163 445ms 10 Mar 2023 733rd ArmaanAS 744 156 10ms 25 Dec 2022 733rd itserasmus 744 156 10ms 25 Jan 2024 733rd weliveinhell 🇭🇹 744 156 11ms 2 Feb 2024 733rd tetrogem 744 156 9ms 26 Jun 2025 737th Yewzir 🇧🇪 744 174 484ms 2 Oct 2025 738th scpchicken 🇵🇼 744 343 10ms 26 Mar 2022 739th TrueBoxGuy 743 154 126ms 23 Jul 2023 740th snoozingnewt 🇨🇦 743 194 294ms 2 Nov 2025 741st dokutan 742 162 453ms 30 Mar 2025 742nd dokutan 742 223 1ms 15 Aug 2024 743rd dokutan 741 114 1,073ms 30 Aug 2025 744th Xzyaihni 741 182 142ms 3 Jan 2023 745th KatieLG-Transpiler 🇬🇧 741 344 10ms 4 Dec 2022 746th jared-hughes 740 116 10ms 27 Mar 2022 746th marcin7Cd 740 116 10ms 1 Apr 2022 746th OllieBoyne 🇬🇧 740 116 10ms 6 Apr 2022 746th TobyBoyne 🇬🇧 740 116 9ms 7 Apr 2022 746th inventshah 740 116 10ms 2 May 2022 746th scpchicken 🇵🇼 740 116 10ms 22 Feb 2023 746th Shanethegamer 🇺🇸 740 116 9ms 21 Mar 2023 746th cros107 🇦🇺 740 116 10ms 6 Aug 2023 746th keelimeguy 🇺🇸 740 116 10ms 13 Nov 2023 746th sultan 740 116 11ms 24 Feb 2024 746th KatieLG 🇬🇧 740 116 10ms 12 Mar 2024 746th cykim8811 740 116 11ms 9 Jul 2024 746th Pyroan 740 116 10ms 24 Feb 2025 746th fuzzylojik-golf 🇺🇸 740 116 10ms 27 May 2025 746th plcc0 740 116 12ms 30 Jan 2026 761st MeWhenI 🇻🇦 740 122 4ms 29 May 2023 762nd emgordon154 739 102 41ms 18 Nov 2024 763rd djeedjay 🇳🇱 739 139 1ms 18 Sep 2022 763rd Lv0Sys 🇵🇱 739 139 2ms 6 Dec 2025 763rd bac0id 739 139 2ms 30 Jan 2026 766th fitzdotlol 🇺🇸 739 157 9ms 28 Mar 2022 766th thisishowmymindworks 🇳🇴 739 157 11ms 7 Jun 2023 766th Salutations45 739 157 9ms 25 Nov 2024 769th albanian-laundromat 737 113 495ms 12 Sep 2025 770th Yewzir 🇧🇪 737 163 56ms 25 May 2023 771st bbb651 🇮🇱 737 183 146ms 31 May 2022 772nd CaedenHarper 🇨🇦 737 346 10ms 24 Jan 2025 773rd dokutan 735 166 393ms 15 Aug 2024 774th osmith93 734 117 10ms 10 Jul 2022 774th Alex-x90 🇺🇸 734 117 10ms 27 Dec 2022 774th FlorianCassayre 🇫🇷 734 117 10ms 27 Jul 2023 774th anonymaew 734 117 14ms 3 Aug 2023 774th tri1212 🇻🇳 734 117 9ms 10 Aug 2023 774th Grrisly 734 117 10ms 25 Mar 2024 774th BlankSpruce 734 117 9ms 19 Aug 2024 774th NanduBC 734 117 10ms 6 Sep 2024 774th yokasuretsu 734 117 10ms 9 Jan 2025 774th andrewjc2000 734 117 10ms 15 Jul 2025 784th retrohun 734 140 1ms 16 Dec 2022 784th emgordon154 734 140 1ms 25 Jul 2024 786th rgthree 734 158 10ms 6 Sep 2023 787th Shanethegamer 🇺🇸 733 149 147ms 28 Oct 2024 788th nickspoons 🇳🇿 732 103 34ms 12 Aug 2022 789th ericlangedijk 🇸🇮 731 167 432ms 27 Mar 2022 789th sabvdf 731 167 419ms 8 Dec 2022 789th aliakseikalosha 731 167 406ms 8 Aug 2024 789th snoozingnewt 🇨🇦 731 167 407ms 2 Nov 2025 793rd msbranicky 731 197 301ms 24 Aug 2023 794th Natanaelel 🇸🇪 730 94 2ms 29 Mar 2022 795th kellengreen 730 159 14ms 20 Sep 2024 795th Mabeloid 🇳🇴 730 159 10ms 26 Oct 2024 797th Irratix 🇳🇱 729 141 2ms 14 May 2022 797th Heathcorp 🇦🇺 729 141 1ms 28 Oct 2022 797th pandapawskat 729 141 1ms 6 Dec 2022 797th dcgjb 729 141 1ms 10 Jan 2024 First Prev 721–800 of 2,337 Next Last