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?
United States 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 81st nwellnhof 🇩🇪 920 133 473ms 27 Aug 2024 82nd sisyphus-ppcg 🇦🇺 919 82 35ms 23 Jan 2021 82nd prplz 🇦🇺 919 82 35ms 5 Jun 2021 82nd olivermrose 🇺🇸 919 82 35ms 24 Aug 2021 82nd stefangimmillaro 919 82 34ms 4 Aug 2022 82nd MeWhenI 🇻🇦 919 82 37ms 4 Aug 2022 82nd DialFrost 🇸🇬 919 82 35ms 25 Jan 2023 82nd Steffan153 🇫🇮 919 82 37ms 25 Jan 2023 82nd GrayJoKing 🇦🇺 919 82 36ms 20 Dec 2023 82nd ovs-code 🇩🇪 919 82 38ms 1 Feb 2024 82nd sean-niemann 🇺🇸 919 82 34ms 7 Jul 2025 82nd pardouin 🇫🇷 919 82 33ms 11 Aug 2025 82nd emgordon154 919 82 43ms 16 Sep 2025 94th alemelis 918 104 266ms 1 Sep 2024 95th JayXon 🇺🇸 917 152 2ms 11 Jan 2024 96th inventshah 915 74 2ms 17 May 2022 97th clockworknazo 915 124 4ms 8 Feb 2023 97th primo-ppcg 🇹🇭 915 124 418ms 1 Aug 2023 99th JayXon 🇺🇸 915 177 188ms 19 Feb 2026 100th primo-ppcg 🇹🇭 915 186 352ms 29 Oct 2021 101st Steffan153 🇫🇮 914 122 118ms 15 Jul 2024 101st Kacarott 🇦🇺 914 122 453ms 23 Sep 2024 103rd DialFrost 🇸🇬 913 94 5ms 12 Aug 2024 104th rucin93 🇵🇱 913 112 163ms 31 Oct 2024 104th sean-niemann 🇺🇸 913 112 171ms 31 Oct 2024 104th Steffan153 🇫🇮 913 112 167ms 28 Feb 2026 107th HPWiz 🇳🇿 913 115 16ms 4 Nov 2025 108th Shanethegamer 🇺🇸 912 103 550ms 7 May 2025 109th nathanadams 🇳🇿 912 110 12ms 11 Aug 2021 109th o0lit3 🇺🇸 912 110 14ms 23 Oct 2021 109th jared-hughes 912 110 12ms 28 Oct 2021 109th emplv 🇱🇻 912 110 10ms 7 Jul 2022 109th Argeento 🇵🇱 912 110 13ms 15 Jul 2022 109th rucin93 🇵🇱 912 110 11ms 15 Jul 2022 109th Irratix 🇳🇱 912 110 13ms 19 Sep 2022 109th DialFrost 🇸🇬 912 110 12ms 23 Jan 2023 109th Steffan153 🇫🇮 912 110 12ms 28 Jan 2023 109th dmrichwa 🇺🇸 912 110 14ms 22 Jun 2023 109th m-tkach 🇺🇦 912 110 12ms 9 Feb 2024 109th weliveinhell 🇭🇹 912 110 11ms 30 May 2024 109th codereport 🇨🇦 912 110 13ms 4 Jul 2024 109th sean-niemann 🇺🇸 912 110 10ms 11 Jul 2024 109th voytxt 🇨🇿 912 110 12ms 26 Jul 2024 109th vlpx 🇫🇮 912 110 11ms 1 Aug 2024 109th b-illy 🇬🇧 912 110 14ms 29 Sep 2024 109th duckyluuk 🇳🇱 912 110 11ms 3 Oct 2024 109th CaedenHarper 🇨🇦 912 110 12ms 4 Oct 2024 109th edsrzf 🇳🇿 912 110 11ms 10 Oct 2024 109th lukegustafson 🇺🇸 912 110 13ms 11 Nov 2024 109th stefangimmillaro 912 110 13ms 12 Dec 2024 109th LukeBridges 🇬🇧 912 110 11ms 21 Jan 2025 109th kirjavascript 912 110 11ms 17 Feb 2025 109th acollett89 912 110 13ms 6 Aug 2025 109th emgordon154 912 110 11ms 15 Sep 2025 109th KasperKivimaeki 🇫🇮 912 110 10ms 3 Nov 2025 109th JOrE20 912 110 12ms 18 Dec 2025 137th JayXon 🇺🇸 912 129 116ms 4 Feb 2026 138th GrayJoKing 🇦🇺 909 83 122ms 20 Dec 2023 139th DialFrost 🇸🇬 909 105 498ms 12 May 2024 139th SirBogman 🇺🇸 909 105 264ms 14 Jun 2024 139th Daniel-Ellison 909 105 261ms 13 Sep 2025 142nd m-tkach 🇺🇦 909 154 3ms 30 Jul 2022 143rd blaztoma 🇱🇹 908 83 43ms 13 Nov 2025 144th ovs-code 🇩🇪 908 125 4ms 7 Feb 2023 145th stefangimmillaro 908 141 113ms 20 Apr 2024 146th sisyphus-ppcg 🇦🇺 907 88 1,731ms 23 Mar 2021 146th Steffan153 🇫🇮 907 88 1,583ms 28 Jan 2023 146th MeWhenI 🇻🇦 907 88 1,692ms 12 May 2023 146th stefangimmillaro 907 88 1,631ms 6 Aug 2023 146th pardouin 🇫🇷 907 88 1,690ms 11 Aug 2025 146th emgordon154 907 88 1,596ms 16 Sep 2025 152nd stefangimmillaro 907 119 4,255ms 30 Oct 2024 152nd emgordon154 907 119 4,287ms 15 Sep 2025 154th primo-ppcg 🇹🇭 907 123 390ms 22 Sep 2024 155th AlephSquirrel 907 149 6ms 21 Oct 2024 156th bitsandbeyond 🇳🇱 906 90 326ms 6 Oct 2025 157th JayXon 🇺🇸 906 190 127ms 1 Aug 2022 158th ovs-code 🇩🇪 905 116 9ms 31 Oct 2025 159th GrayJoKing 🇦🇺 905 154 2ms 10 Jan 2024 160th nwellnhof 🇩🇪 905 188 361ms 15 Dec 2020 First Prev 81–160 of 1,429 Next Last
