The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 92 mins. Why not try and solve them ahead of time?
Foo Fizz Buzz Bar 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 687th CutSandstone 910 90 42ms 4 Jul 2024 687th martion2007 910 90 10ms 15 Aug 2024 687th gallium-gonzollium 910 90 11ms 26 Aug 2024 687th alemelis 910 90 12ms 1 Oct 2024 687th rozium 910 90 12ms 11 Oct 2024 687th Artemis21 🇬🇧 910 90 12ms 21 Dec 2024 687th WCScrypto-official 910 90 11ms 22 Dec 2024 687th Alithinar 910 90 12ms 15 May 2025 687th LuisGoncalves05 🇵🇹 910 90 12ms 9 Jul 2025 687th ESOrSomething 910 90 40ms 26 Sep 2025 687th jacekwladzinski 910 90 12ms 2 Oct 2025 687th SectorCorruptor 910 90 11ms 10 Feb 2026 687th mailboxjpg 910 90 11ms 26 Feb 2026 734th GrayJoKing 🇦🇺 910 112 2ms 16 Jul 2024 735th lynn 910 124 24ms 11 Jul 2023 735th Steffan153 🇫🇮 910 124 25ms 16 Jun 2024 737th Steffan153 🇫🇮 909 82 153ms 8 Aug 2024 737th sean-niemann 🇺🇸 909 82 138ms 8 Aug 2024 737th rucin93 🇵🇱 909 82 146ms 9 Aug 2024 740th btnlq 909 95 16ms 9 Dec 2021 741st Shanethegamer 🇺🇸 909 110 14ms 5 May 2024 742nd GrayJoKing 🇦🇺 909 120 37ms 20 Jun 2022 742nd 386asm 🇺🇸 909 120 39ms 27 Apr 2023 744th ovs-code 🇩🇪 909 127 3ms 14 Jul 2023 744th typeswitch-dev 🇵🇹 909 127 3ms 24 Jul 2023 746th byronknoll 🇺🇸 909 132 58ms 25 Jan 2024 747th GrayJoKing 🇦🇺 908 77 271ms 21 Nov 2021 748th MeWhenI 🇻🇦 908 89 11ms 3 Jul 2023 749th MeWhenI 🇻🇦 908 113 12ms 29 Mar 2024 750th SirBogman 🇺🇸 907 101 43ms 3 Jun 2025 751st Shanethegamer 🇺🇸 906 105 112ms 15 Oct 2022 751st sisyphus-ppcg 🇦🇺 906 105 136ms 19 Oct 2022 751st stefangimmillaro 906 105 121ms 19 Oct 2022 751st sean-niemann 🇺🇸 906 105 106ms 19 Mar 2025 755th frankgraziano 906 113 8ms 23 Feb 2026 755th edsrzf 🇳🇿 906 113 8ms 25 Feb 2026 755th Steffan153 🇫🇮 906 113 8ms 26 Feb 2026 755th emgordon154 906 113 8ms 3 Mar 2026 755th GrayJoKing 🇦🇺 906 113 8ms 27 days ago 760th GrayJoKing 🇦🇺 905 106 3ms 12 Sep 2022 761st canissimia 🇦🇶 905 138 186ms 20 May 2023 762nd Steffan153 🇫🇮 904 116 108ms 22 Feb 2026 763rd Frowny 902 51 36ms 22 Nov 2021 764th Shanethegamer 🇺🇸 902 106 140ms 23 May 2023 764th btnlq 902 106 131ms 15 Oct 2023 766th SirBogman 🇺🇸 902 121 40ms 19 Jun 2022 767th btnlq 902 128 3ms 15 Jul 2023 767th GrayJoKing 🇦🇺 902 128 3ms 25 Jul 2023 769th ovs-code 🇩🇪 902 133 433ms 28 Feb 2023 770th CaedenHarper 🇨🇦 902 138 453ms 3 Oct 2025 770th squid233 902 138 485ms 7 Nov 2025 772nd jared-hughes 902 141 18ms 20 Dec 2024 773rd m-tkach 🇺🇦 902 164 80ms 25 Apr 2022 774th emgordon154 901 145 4ms 15 Jan 2025 775th retrohun 900 72 249ms 6 Oct 2024 776th sean-niemann 🇺🇸 900 79 312ms 12 Mar 2025 777th didion0 🇺🇸 900 86 10ms 23 Nov 2021 777th MattShaile 900 86 10ms 20 Mar 2022 777th samthidny 900 86 11ms 20 Mar 2022 777th Irratix 🇳🇱 900 86 10ms 1 Apr 2022 777th Shanethegamer 🇺🇸 900 86 10ms 1 Apr 2022 777th 0x24a537r9 900 86 11ms 20 Aug 2022 777th DayDun 🇸🇪 900 86 11ms 17 Jan 2023 777th thisishowmymindworks 🇳🇴 900 86 12ms 8 Jun 2023 777th Maznek 900 86 10ms 1 Jul 2023 777th coreynash 900 86 10ms 15 Sep 2023 777th Davr1 🇨🇿 900 86 12ms 14 Oct 2023 777th byronknoll 🇺🇸 900 86 10ms 14 May 2024 777th 0scarB 900 86 13ms 14 Jun 2024 777th thadeucity 900 86 10ms 23 May 2025 791st PyPylia 🇦🇺 900 91 11ms 25 Nov 2021 791st EzraG101 900 91 11ms 26 Nov 2021 791st fynnkroeger 900 91 12ms 5 Dec 2021 791st olavaga 900 91 12ms 8 Dec 2021 791st petroselo 900 91 12ms 27 Dec 2021 791st Puperger 900 91 11ms 29 Dec 2021 791st raketexyz 900 91 11ms 29 Dec 2021 791st neburcraft 900 91 43ms 30 Dec 2021 791st amollberg 🇸🇪 900 91 12ms 25 Jan 2022 791st shibacho 🇯🇵 900 91 10ms 29 Jan 2022 First Prev 721–800 of 3,484 Next Last