The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 37 hours. Why not try and solve them ahead of time?
Foo Fizz Buzz Bar in Bash in chars. 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 Chars Time Submitted 1st dvargas46 🇺🇸 1,000 67 126ms 16 Jul 2022 2nd saito-ta 🇯🇵 971 69 88ms 13 May 2022 3rd Lydxn 🇨🇦 944 71 221ms 19 Jul 2022 4th retrohun 931 72 249ms 6 Oct 2024 5th primo-ppcg 🇹🇭 918 73 89ms 13 May 2022 6th GrayJoKing 🇦🇺 859 78 15ms 21 Nov 2021 6th sisyphus-ppcg 🇦🇺 859 78 14ms 30 Nov 2021 6th andersk 🇺🇸 859 78 13ms 25 Oct 2022 6th Steffan153 🇫🇮 859 78 13ms 3 Aug 2024 6th DialFrost 🇸🇬 859 78 12ms 11 Jan 2025 11th JRaspass 🇬🇧 838 80 190ms 24 Nov 2021 11th Shanethegamer 🇺🇸 838 80 162ms 24 Nov 2021 11th inventshah 838 80 173ms 13 May 2022 11th byronknoll 🇺🇸 838 80 168ms 17 May 2024 11th pardouin 🇫🇷 838 80 132ms 17 Aug 2024 11th fuzzylojik-golf 🇺🇸 838 80 167ms 4 Sep 2025 11th snoozingnewt 🇨🇦 838 80 179ms 7 Oct 2025 18th MeWhenI 🇻🇦 827 81 16ms 22 Nov 2021 18th mokymok 🇺🇸 827 81 16ms 22 Nov 2021 18th janbehrens 🇩🇪 827 81 14ms 22 Nov 2021 18th RYNO8 827 81 16ms 23 Nov 2021 18th xPMo 827 81 15ms 28 Jun 2024 18th blaztoma 🇱🇹 827 81 15ms 17 Aug 2025 24th btjones0 677 99 116ms 2 Dec 2021 25th luuumine 🇫🇷 644 104 10ms 10 Nov 2025 26th NameRandomString 638 105 8ms 85 mins ago 27th SirBogman 🇺🇸 598 112 8ms 21 Nov 2021 27th rollershutter 598 112 9ms 5 Jul 2024 29th jared-hughes 528 127 11ms 22 Apr 2022 30th jhpaques 🇫🇷 500 134 25ms 30 Nov 2022 31st keelimeguy 🇺🇸 493 136 12ms 12 Oct 2023 32nd dokutan 416 161 12ms 28 Sep 2024 33rd ValNyz 360 186 17ms 23 Feb 2022 34th shibacho 🇯🇵 344 195 11ms 9 Dec 2021 35th vhoulbreque 🇫🇷 325 206 16ms 20 Aug 2022 36th JackieAlacrity2373 298 225 9ms 12 Feb 2025 37th msbranicky 259 259 15ms 11 Sep 2023 38th KatieLG 🇬🇧 12 5,725 4ms 25 Nov 2021 38th KatieLG-Transpiler 🇬🇧 12 5,725 4ms 24 Jun 2022 38th HumanoidCPU 12 5,725 4ms 21 May 2024 38th CaedenHarper 🇨🇦 12 5,725 4ms 22 Jan 2025 1–41 of 41
