The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 8 days. Why not try and solve them ahead of time?
Leap Years 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 71st pardouin 🇫🇷 965 32 1,318ms 11 Apr 2025 71st fuzzylojik-golf 🇺🇸 965 32 1,260ms 31 Aug 2025 83rd btnlq 964 44 10ms 10 Feb 2022 83rd 4atj 964 44 10ms 30 Jun 2025 85th targrik 963 46 6ms 17 Dec 2024 86th JayXon 🇺🇸 962 35 444ms 17 Apr 2021 86th Lydxn 🇨🇦 962 35 451ms 22 Aug 2021 86th sean-niemann 🇺🇸 962 35 393ms 30 Sep 2022 86th Steffan153 🇫🇮 962 35 382ms 26 Dec 2022 86th DialFrost 🇸🇬 962 35 417ms 8 Nov 2023 91st Lydxn 🇨🇦 960 44 1ms 9 Feb 2022 91st JayXon 🇺🇸 960 44 1ms 9 Feb 2022 93rd primo-ppcg 🇹🇭 959 39 55ms 11 Mar 2021 94th JayXon 🇺🇸 959 59 386ms 21 Nov 2021 94th Lydxn 🇨🇦 959 59 375ms 21 Nov 2021 94th lynn 959 59 367ms 21 Nov 2021 94th primo-ppcg 🇹🇭 959 59 370ms 21 Nov 2021 94th btnlq 959 59 363ms 22 Dec 2021 94th Steffan153 🇫🇮 959 59 410ms 5 hours ago 100th JayXon 🇺🇸 958 65 383ms 24 Sep 2025 100th Lydxn 🇨🇦 958 65 440ms 12 Dec 2025 100th Steffan153 🇫🇮 958 65 404ms 5 hours ago 103rd primo-ppcg 🇹🇭 957 41 17ms 4 Dec 2018 103rd ETHproductions 🇺🇸 957 41 10ms 5 Dec 2018 103rd andersk 🇺🇸 957 41 9ms 20 Mar 2020 103rd cywong-amino 🇭🇰 957 41 9ms 19 May 2020 103rd Attero 🇸🇪 957 41 9ms 22 May 2020 103rd Irratix 🇳🇱 957 41 10ms 7 Jul 2020 103rd uw4 957 41 10ms 29 Aug 2020 103rd JayXon 🇺🇸 957 41 10ms 17 Sep 2020 103rd tomtheisen 🇺🇸 957 41 8ms 24 Sep 2020 103rd rucin93 🇵🇱 957 41 10ms 7 Oct 2020 103rd Argeento 🇵🇱 957 41 10ms 9 Oct 2020 103rd HPWiz 🇳🇿 957 41 9ms 12 Oct 2020 103rd BBoehm 🇩🇪 957 41 12ms 15 Oct 2020 103rd nwellnhof 🇩🇪 957 41 9ms 5 Nov 2020 103rd emplv 🇱🇻 957 41 8ms 23 Nov 2020 103rd o0lit3 🇺🇸 957 41 9ms 3 Jan 2021 103rd madex 🇩🇪 957 41 9ms 18 Jan 2021 103rd didion0 🇺🇸 957 41 9ms 10 Feb 2021 103rd ScottHamper 957 41 9ms 21 May 2021 103rd janbehrens 🇩🇪 957 41 11ms 22 May 2021 103rd NewDefectus 🇮🇱 957 41 9ms 27 May 2021 103rd Waffle3z 957 41 9ms 14 Jul 2021 103rd Lydxn 🇨🇦 957 41 9ms 21 Aug 2021 103rd jakzo 957 41 12ms 9 Sep 2021 103rd mjamado 957 41 10ms 5 Feb 2022 103rd GrayJoKing 🇦🇺 957 41 10ms 9 Feb 2022 103rd jared-hughes 957 41 10ms 10 Mar 2022 103rd sean-niemann 🇺🇸 957 41 9ms 20 Mar 2022 103rd voytxt 🇨🇿 957 41 9ms 7 Apr 2022 103rd simon-biber 957 41 9ms 19 May 2022 103rd dmrichwa 🇺🇸 957 41 10ms 20 May 2022 103rd prplz 🇦🇺 957 41 9ms 22 May 2022 103rd MeWhenI 🇻🇦 957 41 12ms 6 Sep 2022 103rd makinde 957 41 9ms 18 Oct 2022 103rd Steffan153 🇫🇮 957 41 9ms 26 Dec 2022 103rd biocommando 🇫🇮 957 41 11ms 26 Dec 2022 103rd b10011 🇫🇮 957 41 9ms 8 Jan 2023 103rd DialFrost 🇸🇬 957 41 11ms 23 Jan 2023 103rd inventshah 957 41 10ms 26 Jan 2023 103rd neel11235813 957 41 9ms 14 Feb 2023 103rd stefangimmillaro 957 41 12ms 19 Feb 2023 103rd xsot 🇸🇬 957 41 9ms 19 Mar 2023 103rd ovs-code 🇩🇪 957 41 8ms 29 Sep 2023 103rd trinityy-7 957 41 12ms 17 Dec 2023 103rd helbling 🇨🇭 957 41 9ms 14 May 2024 103rd vlpx 🇫🇮 957 41 9ms 18 Jun 2024 103rd pardouin 🇫🇷 957 41 10ms 5 Aug 2024 103rd dokutan 957 41 9ms 25 Sep 2024 103rd b-illy 🇬🇧 957 41 9ms 28 Sep 2024 103rd kirjavascript 957 41 9ms 1 Jun 2025 103rd fuzzylojik-golf 🇺🇸 957 41 9ms 28 Jun 2025 103rd Nemikolh 🇫🇷 957 41 9ms 15 Jul 2025 103rd Yax42 🇫🇷 957 41 9ms 9 Sep 2025 103rd qpwoeirut 957 41 8ms 14 Oct 2025 103rd Babafaba 957 41 9ms 15 Oct 2025 103rd KasperKivimaeki 🇫🇮 957 41 10ms 1 Nov 2025 103rd CornerMercury 🇬🇧 957 41 10ms 7 Dec 2025 103rd edsrzf 🇳🇿 957 41 9ms 21 Dec 2025 First Prev 81–160 of 4,863 Next Last
