The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 7 days. Why not try and solve them ahead of time?
Pangram Grep in Python 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 213th wuduculfre 753 81 11ms 22 Jul 2025 242nd Sandpaper567 744 82 10ms 12 Aug 2018 242nd Dazza314 🇬🇧 744 82 11ms 4 Nov 2020 242nd dzshn 744 82 11ms 17 Aug 2022 242nd janbehrens 🇩🇪 744 82 17ms 17 Jun 2023 242nd gabe-gallegos 744 82 10ms 12 May 2024 242nd NanduBC 744 82 13ms 3 Sep 2024 242nd Troon 744 82 18ms 18 Feb 2025 242nd snooze92 🇫🇷 744 82 11ms 5 Mar 2025 242nd heanyang1 744 82 11ms 4 Jul 2025 251st relet 735 83 11ms 8 Aug 2018 251st usnheckler 735 83 10ms 7 Jun 2019 251st raghav198 735 83 11ms 4 Nov 2020 251st Cloakless 🇬🇧 735 83 11ms 25 Oct 2021 251st CatsAreFluffy 735 83 17ms 30 Dec 2022 251st randolchance 735 83 10ms 12 Dec 2023 251st Grrisly 735 83 10ms 27 Mar 2024 251st mathieurodic 735 83 12ms 3 Nov 2025 259th tomh1012 726 84 20ms 2 Nov 2020 259th stordev 726 84 10ms 26 Feb 2021 259th face0xff 726 84 11ms 19 Oct 2021 259th EstuardoDelAngel 726 84 11ms 25 Mar 2022 259th Estuardicue 726 84 11ms 25 Mar 2022 259th ellis-rix 726 84 11ms 19 May 2023 259th ssbhatt4321 726 84 11ms 14 Oct 2023 259th Bmrl7 726 84 10ms 26 Feb 2024 259th smokestacklightnin 🇺🇸 726 84 12ms 9 Jun 2024 259th jfallon1997 726 84 12ms 24 Jun 2024 259th imelxr 🇮🇱 726 84 11ms 2 Oct 2024 259th LostSyntax21 🇬🇧 726 84 11ms 5 Jul 2025 259th FEZfan 🇦🇺 726 84 11ms 15 Oct 2025 272nd CRHillman 718 85 11ms 16 Aug 2018 272nd PeteAndersen 718 85 11ms 7 Jun 2019 272nd TheYMI 718 85 11ms 14 Jul 2019 272nd dyc3 718 85 17ms 9 Jul 2020 272nd bastienvoirin 🇫🇷 718 85 11ms 28 Nov 2020 272nd fynnkroeger 718 85 10ms 13 Jan 2021 272nd galloj 🇨🇿 718 85 11ms 29 Jan 2021 272nd mauro-1 🇮🇹 718 85 13ms 18 Aug 2021 272nd LeeCamp 718 85 10ms 30 Jan 2022 272nd jhu04 718 85 11ms 10 Jul 2022 272nd PatrickStephansen 🇿🇦 718 85 13ms 25 Aug 2022 272nd JeromeSchweitzer 718 85 10ms 15 Oct 2022 272nd anderium 718 85 11ms 5 Aug 2023 272nd Mikey-Beep 🇬🇧 718 85 11ms 24 Aug 2023 272nd AZ9tumas 718 85 11ms 19 Oct 2023 272nd chartung17 718 85 11ms 1 Jan 2024 272nd Europe2048 718 85 10ms 25 Nov 2024 272nd TheZwierzLF 🇵🇱 718 85 10ms 22 Nov 2025 272nd KatieLG-Transpiler 🇬🇧 718 85 11ms 9 Jan 2026 272nd denkyuu1 718 85 10ms 2 hours ago 292nd evanrittner 709 86 12ms 10 Mar 2019 292nd shibacho 🇯🇵 709 86 11ms 17 Apr 2019 292nd sk- 709 86 11ms 18 Sep 2019 292nd adoxography 709 86 11ms 28 Oct 2019 292nd ian-h-chamberlain 🇺🇸 709 86 10ms 11 Dec 2019 292nd toombs-caeman 709 86 11ms 8 Mar 2020 292nd artieleach 709 86 11ms 8 Feb 2021 292nd dymowski 709 86 18ms 14 Feb 2021 292nd feherd 709 86 11ms 2 Sep 2021 292nd myleopard 709 86 10ms 15 Oct 2021 292nd BrenSchaap 709 86 10ms 21 Oct 2021 292nd samgiz 709 86 11ms 30 Oct 2021 292nd CodyMiner 709 86 11ms 25 Nov 2021 292nd HallMatthew314 709 86 11ms 29 Nov 2021 292nd petroselo 709 86 11ms 29 Dec 2021 292nd lovernj 709 86 14ms 31 Jan 2022 292nd glesnick 709 86 10ms 6 Sep 2022 292nd Bodo171 709 86 11ms 21 Nov 2022 292nd Re-Adventures 🇮🇳 709 86 11ms 27 Jul 2023 292nd jacobly0 🇺🇸 709 86 10ms 28 Aug 2023 292nd EnviloN 🇨🇿 709 86 11ms 19 Oct 2024 292nd jamesthekee 709 86 11ms 27 Jan 2025 292nd YAJUE114514 709 86 12ms 19 Dec 2025 292nd netfri25 🇮🇱 709 86 17ms 20 Feb 2026 292nd inverseLorentz 🇦🇺 709 86 10ms 24 days ago 317th bkshrader 701 87 11ms 29 Dec 2018 317th ly0va 701 87 11ms 3 Jan 2019 317th decorator-factory 701 87 11ms 19 May 2019 317th michelebastione 🇮🇹 701 87 11ms 25 Oct 2019 First Prev 241–320 of 625 Next Last