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?
Pangram Grep 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 479th stefangimmillaro 891 98 593ms 6 Oct 2025 479th namelessiw 891 98 449ms 7 Oct 2025 479th KasperKivimaeki 🇫🇮 891 98 419ms 20 Nov 2025 484th btnlq 891 102 2ms 14 Sep 2022 484th JayXon 🇺🇸 891 102 3ms 24 Sep 2022 486th SirBogman 🇺🇸 890 81 26ms 22 Oct 2022 486th IanUtley 890 81 27ms 30 Aug 2023 488th ovs-code 🇩🇪 889 52 11ms 4 Oct 2024 489th kg583 🇺🇸 889 92 7ms 29 Oct 2025 490th GrayJoKing 🇦🇺 889 95 36ms 20 Jun 2022 490th primo-ppcg 🇹🇭 889 95 37ms 20 Jun 2022 490th 386asm 🇺🇸 889 95 38ms 2 May 2023 493rd edsrzf 🇳🇿 888 76 4ms 7 Nov 2025 494th tomtheisen 🇺🇸 888 78 454ms 11 Feb 2025 495th Peter-Lande 888 79 11ms 12 Aug 2018 495th Sora-the-explora 888 79 10ms 12 Aug 2018 495th evelyn-fu 888 79 11ms 12 Aug 2018 495th DaleNaci 888 79 12ms 12 Aug 2018 495th Gymhgy 888 79 10ms 23 Apr 2019 495th jarekwg 888 79 11ms 26 Apr 2019 495th Sticky-Bits 888 79 11ms 26 Apr 2019 495th ludwig-n 888 79 11ms 9 Nov 2019 495th shraiwi 888 79 11ms 31 May 2020 495th thisishowmymindworks 🇳🇴 888 79 11ms 5 Oct 2020 495th clementblaudeau 888 79 11ms 3 Jun 2021 495th zbreit 🇺🇸 888 79 11ms 13 Aug 2021 495th kinoute 🇫🇷 888 79 11ms 10 Sep 2021 495th cole-wilson 888 79 11ms 25 Oct 2021 495th Indivicivet 888 79 10ms 26 Oct 2021 495th HerLovelyTentacles 888 79 10ms 21 Nov 2021 495th jmerle 🇳🇱 888 79 11ms 23 Jan 2022 495th Natanaelel 🇸🇪 888 79 11ms 28 Apr 2022 495th Haksell 🇦🇶 888 79 10ms 22 Feb 2023 495th 4hg 🇺🇸 888 79 11ms 3 Jun 2023 495th guilhem-roy 🇫🇷 888 79 10ms 12 Jun 2023 495th quimey 888 79 12ms 15 Jun 2023 495th ImpressedByRocks 888 79 10ms 11 Jul 2023 495th taesungh 888 79 11ms 15 Oct 2023 495th JudeTyrrell 888 79 12ms 6 Oct 2024 495th andrewjc2000 888 79 11ms 9 Mar 2025 495th bknower 888 79 11ms 26 Jun 2025 495th JOrE20 888 79 11ms 26 Feb 2026 523rd mutaguchi 886 40 256ms 10 Jun 2020 523rd TimCurwick 🇺🇸 886 40 247ms 30 Jul 2020 523rd btnlq 886 40 306ms 15 Dec 2020 523rd juliansiebert 🇩🇪 886 40 311ms 20 Jul 2022 523rd IISResetMe 886 40 291ms 9 Mar 2024 528th primo-ppcg 🇹🇭 886 71 5ms 6 Jul 2023 528th edsrzf 🇳🇿 886 71 5ms 6 Sep 2025 530th snoozingnewt 🇨🇦 885 69 98ms 7 Dec 2025 531st primo-ppcg 🇹🇭 884 116 26ms 28 Jul 2021 531st m-tkach 🇺🇦 884 116 26ms 6 Apr 2022 533rd AlexDaniel 🇪🇪 883 35 111ms 22 Jun 2018 534th sean-niemann 🇺🇸 882 84 7ms 16 Aug 2025 535th error256 882 99 552ms 24 Sep 2025 536th m-tkach 🇺🇦 882 115 30ms 5 Feb 2024 537th DialFrost 🇸🇬 882 134 298ms 17 Feb 2026 538th JayXon 🇺🇸 880 76 189ms 24 May 2025 539th GrayJoKing 🇦🇺 880 82 25ms 17 Nov 2021 539th Lydxn 🇨🇦 880 82 26ms 17 Nov 2021 539th annaproxy 880 82 27ms 22 Oct 2022 542nd JayXon 🇺🇸 880 88 19ms 19 Nov 2025 543rd CLOStrophobic 🇮🇹 879 93 7ms 22 Jan 2025 544th bizy-coder 878 66 530ms 17 Jan 2024 544th DialFrost 🇸🇬 878 66 511ms 17 Jan 2024 544th inventshah 878 66 512ms 22 Jan 2024 544th neel11235813 878 66 496ms 14 Mar 2024 544th duckyluuk 🇳🇱 878 66 523ms 27 Mar 2024 544th HumanoidCPU 878 66 536ms 23 May 2024 544th Kacarott 🇦🇺 878 66 545ms 10 Sep 2024 544th lifthrasiir 🇰🇷 878 66 502ms 14 Dec 2024 544th CornerMercury 🇬🇧 878 66 505ms 8 Feb 2026 553rd DialFrost 🇸🇬 878 89 134ms 17 Feb 2026 554th edsrzf 🇳🇿 878 112 139ms 21 Dec 2025 555th Steffan153 🇫🇮 877 48 4ms 10 Mar 2024 556th DialFrost 🇸🇬 877 49 743ms 2 Sep 2025 557th zdzc 877 80 19ms 23 Apr 2019 557th kusti8 877 80 11ms 30 Jul 2019 557th danielwang5 877 80 11ms 1 Aug 2020 557th FlorianCassayre 🇫🇷 877 80 11ms 12 Oct 2022 First Prev 481–560 of 2,705 Next Last