The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 5 days. Why not try and solve them ahead of time?
Pascal’s Triangle in all languages 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 881st MeWhenI 🇻🇦 806 76 125ms 30 Jan 2023 882nd emgordon154 805 61 1,227ms 18 Nov 2024 883rd dokutan 805 72 1ms 6 Jun 2025 884th primo-ppcg 🇹🇭 805 82 90ms 20 Jan 2020 885th angel-p57 🇯🇵 805 232 1ms 3 Dec 2023 886th Yewzir 🇧🇪 804 61 1,067ms 16 Nov 2025 887th Shanethegamer 🇺🇸 804 67 5ms 21 Apr 2023 887th GrayJoKing 🇦🇺 804 67 4ms 22 Aug 2023 889th pardouin 🇫🇷 803 66 62ms 26 Aug 2024 889th GrayJoKing 🇦🇺 803 66 62ms 9 Dec 2025 891st dokutan 803 76 39ms 27 Apr 2025 892nd Irratix 🇳🇱 802 99 445ms 3 Jan 2022 892nd dokutan 802 99 423ms 14 Jul 2025 894th apreg 802 125 303ms 26 Apr 2023 895th justecorruptio 800 61 10ms 13 Apr 2018 895th skps2010 800 61 10ms 4 Jan 2019 895th markus-rekdal 800 61 10ms 7 Nov 2019 895th Srivaths-P 800 61 10ms 20 Feb 2020 895th Secozzi 800 61 10ms 3 Nov 2020 895th neihousaigaai 800 61 10ms 3 May 2021 895th cubed-guy 800 61 10ms 6 Oct 2021 895th CodyMiner 800 61 11ms 12 Nov 2021 895th trist224 🇫🇷 800 61 11ms 21 Sep 2022 895th kevdah 800 61 9ms 4 Oct 2022 895th FlorianCassayre 🇫🇷 800 61 10ms 7 Nov 2022 895th ItsMeNoobieboy 800 61 9ms 21 Dec 2022 895th isorlab49 800 61 10ms 3 May 2023 895th tobeannouncd 800 61 10ms 11 Jan 2024 895th BenjaminHGong 800 61 10ms 22 Jan 2024 895th curohu 🇺🇸 800 61 11ms 14 Oct 2024 895th croc54 800 61 10ms 11 Dec 2024 895th Andre3582 800 61 10ms 10 Oct 2025 895th Bmrl7 800 61 9ms 24 Dec 2025 914th marcin7Cd 800 66 5ms 7 Feb 2021 914th AlephSquirrel 800 66 5ms 31 Jan 2025 916th aliakseikalosha 800 130 24ms 22 Apr 2022 917th DialFrost 🇸🇬 800 145 1,422ms 28 Mar 2025 918th janbehrens 🇩🇪 799 77 2ms 12 Sep 2021 918th KenanHanke 799 77 2ms 19 Feb 2023 918th dokutan 799 77 2ms 14 Jul 2025 921st DialFrost 🇸🇬 798 47 325ms 12 Jun 2024 922nd sean-niemann 🇺🇸 798 54 1ms 3 Dec 2025 923rd MeWhenI 🇻🇦 798 83 127ms 15 Oct 2022 924th GrayJoKing 🇦🇺 797 71 79ms 31 May 2022 925th Johannesd3 797 83 112ms 1 Jul 2019 925th marcin7Cd 797 83 110ms 6 Oct 2020 925th chordowl 797 83 115ms 17 Mar 2021 928th snoozingnewt 🇨🇦 796 48 236ms 30 Sep 2025 929th primo-ppcg 🇹🇭 796 77 127ms 4 Jan 2020 929th MWI-polygolf 796 77 128ms 6 Dec 2023 929th steffan-polygolf 796 77 122ms 14 Feb 2024 932nd DialFrost 🇸🇬 796 81 2ms 24 Feb 2026 933rd Shanethegamer 🇺🇸 796 96 456ms 25 Sep 2025 933rd Yewzir 🇧🇪 796 96 355ms 2 Oct 2025 935th timvermeulen 795 83 98ms 21 Jan 2020 936th sean-niemann 🇺🇸 795 95 117ms 4 Jun 2025 937th janbehrens 🇩🇪 795 126 270ms 13 Jun 2021 938th MeWhenI 🇻🇦 794 61 4ms 28 May 2023 939th madex 🇩🇪 794 131 26ms 6 days ago 940th SirBogman 🇺🇸 793 48 34ms 4 Oct 2025 941st inventshah 793 63 9ms 2 Nov 2022 941st Shanethegamer 🇺🇸 793 63 11ms 24 Apr 2023 941st two-bad 🇬🇧 793 63 11ms 24 Nov 2023 941st trinityy-7 793 63 10ms 5 Dec 2023 941st Maznek 793 63 11ms 21 Jan 2024 941st stefangimmillaro 793 63 10ms 6 Apr 2024 941st FlorianCassayre 🇫🇷 793 63 11ms 26 May 2024 941st kirjavascript 793 63 12ms 13 Feb 2025 941st Yax42 🇫🇷 793 63 10ms 6 Sep 2025 950th frankgraziano 793 72 7ms 22 Feb 2026 951st btnlq 793 135 6ms 19 Oct 2020 952nd bluebear94 792 27 98ms 23 Dec 2017 952nd Attero 🇸🇪 792 27 99ms 8 Apr 2020 952nd edsrzf 🇳🇿 792 27 111ms 14 Jan 2026 955th Shanethegamer 🇺🇸 792 77 38ms 11 Mar 2023 956th edsrzf 🇳🇿 791 67 62ms 9 Dec 2025 957th Shanethegamer 🇺🇸 790 74 43ms 13 Feb 2025 958th diddily 789 19 35ms 29 Oct 2019 958th kurkale6ka 789 19 33ms 26 Aug 2021 958th Natanaelel 🇸🇪 789 19 33ms 25 Oct 2023 First Prev 881–960 of 3,048 Next Last