The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 4 days. Why not try and solve them ahead of time?
Pangram Grep 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 801st Innf107 785 125 135ms 12 Nov 2022 801st the-zammers 785 125 143ms 12 Oct 2023 803rd GrayJoKing 🇦🇺 784 122 8ms 24 Feb 2026 804th JOrE20 783 23 41ms 17 Feb 2026 805th Eilonlif 🇮🇱 782 76 11ms 3 Nov 2022 805th bizy-coder 782 76 11ms 20 Aug 2023 805th orthoplex 🇨🇽 782 76 11ms 27 Nov 2023 805th 5cw 🇺🇸 782 76 11ms 29 Dec 2023 805th bzijlema 🇳🇱 782 76 10ms 22 Jul 2024 805th kops-cg 782 76 11ms 26 Feb 2025 805th firegene 🇮🇪 782 76 10ms 20 Feb 2026 812th janbehrens 🇩🇪 781 58 1,371ms 27 Nov 2022 813th commandz0 🇺🇸 781 67 460ms 1 Sep 2025 814th DialFrost 🇸🇬 781 90 8ms 3 Jan 2026 815th MahlerFive 🇨🇦 781 151 353ms 19 Apr 2020 816th clupasq 780 48 41ms 3 Feb 2018 816th fynnkroeger 780 48 39ms 17 Apr 2023 818th MeWhenI 🇻🇦 780 59 12ms 13 Aug 2024 818th Shanethegamer 🇺🇸 780 59 6ms 15 Aug 2024 820th somebody1234 779 39 5ms 3 Jun 2018 820th NewDefectus 🇮🇱 779 39 4ms 23 May 2021 822nd dokutan 779 46 461ms 6 Mar 2021 823rd Shanethegamer 🇺🇸 779 67 141ms 3 Aug 2024 824th janAkali 🇷🇺 778 96 420ms 12 Oct 2025 825th ScottHamper 778 112 607ms 30 Nov 2025 826th RustemB 🇷🇺 777 36 121ms 20 May 2020 826th 4hg 🇺🇸 777 36 105ms 22 Aug 2022 828th Shanethegamer 🇺🇸 776 54 10ms 25 Feb 2023 829th error256 776 55 914ms 7 Feb 2026 830th revlayle 🇺🇸 776 89 491ms 6 Jun 2023 830th sean-niemann 🇺🇸 776 89 419ms 9 Aug 2024 830th tomh1012 776 89 432ms 21 Nov 2025 833rd edsrzf 🇳🇿 776 105 3ms 27 Aug 2025 834th SirBogman 🇺🇸 776 152 339ms 14 Jul 2020 834th Yewzir 🇧🇪 776 152 310ms 29 Oct 2023 836th yzhs 🇩🇪 775 104 1,350ms 10 Jul 2022 837th DialFrost 🇸🇬 774 44 1,951ms 2 Aug 2025 838th primo-ppcg 🇹🇭 774 96 502ms 23 Sep 2022 839th exodrifter 🇺🇸 773 127 146ms 25 Oct 2022 840th Constructor7 772 77 12ms 23 Feb 2018 840th dzhang314 772 77 11ms 14 Aug 2019 840th petar-donchev 772 77 12ms 27 Aug 2019 840th andre-lameirinhas 🇵🇹 772 77 11ms 24 Jan 2020 840th kmaork 🇮🇱 772 77 12ms 21 Feb 2020 840th loserface69 772 77 12ms 16 Mar 2020 840th davitf 772 77 12ms 3 Jul 2020 840th nwellnhof 🇩🇪 772 77 19ms 14 Jan 2021 840th 77Tigers 772 77 11ms 1 Mar 2021 840th inventshah 772 77 10ms 12 Apr 2021 840th RDShah 772 77 10ms 15 Apr 2021 840th jared-hughes 772 77 10ms 15 Aug 2021 840th cubed-guy 772 77 11ms 17 Nov 2021 840th knutae 🇳🇴 772 77 11ms 26 Nov 2021 840th CedricGebistorf 772 77 11ms 5 Mar 2022 840th rak1507 🇬🇧 772 77 10ms 2 May 2022 840th vhoulbreque 🇫🇷 772 77 11ms 20 Aug 2022 840th b10011 🇫🇮 772 77 11ms 30 Dec 2022 840th bob-th 772 77 12ms 1 Jan 2023 840th Irratix 🇳🇱 772 77 10ms 31 May 2023 840th TaserTheFox 🇺🇸 772 77 11ms 31 May 2023 840th stefangimmillaro 772 77 12ms 31 May 2023 840th scpchicken 🇵🇼 772 77 11ms 31 May 2023 840th annaproxy 772 77 11ms 1 Jun 2023 840th btjones0 772 77 11ms 1 Jun 2023 840th StefanHabel 🇨🇦 772 77 11ms 4 Jun 2023 840th bricknellj 772 77 11ms 7 Jun 2023 840th AlexanderFair 772 77 12ms 19 Jun 2023 840th InigoK 🇺🇸 772 77 11ms 24 Jun 2023 840th davecame 772 77 11ms 31 Jul 2023 840th nstearns96 🇬🇧 772 77 11ms 15 Sep 2023 840th gitbedd 🇬🇧 772 77 10ms 22 Sep 2023 840th mikehanus 772 77 11ms 22 Nov 2023 840th mathisfun271 772 77 12ms 14 Dec 2023 840th rollershutter 772 77 11ms 7 Mar 2024 840th Anonymousellama21 772 77 11ms 7 Mar 2024 840th PeterTillema 🇳🇱 772 77 11ms 17 Mar 2024 840th aalec 772 77 11ms 24 Apr 2024 840th TobyBoyne 🇬🇧 772 77 12ms 6 Jun 2024 840th OllieBoyne 🇬🇧 772 77 14ms 19 Jun 2024 840th 051 🇸🇬 772 77 17ms 1 Aug 2024 First Prev 801–880 of 2,690 Next Last