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 317th amishtal 701 87 17ms 3 Dec 2019 317th somebody1234 701 87 11ms 20 Jan 2020 317th ADV1K 🇮🇳 701 87 11ms 20 Feb 2020 317th luftj 701 87 11ms 3 May 2020 317th OwenElliottDev 701 87 11ms 19 Jul 2020 317th jameslindesay 701 87 10ms 18 Aug 2020 317th xkacer 🇨🇿 701 87 13ms 27 Jan 2021 317th richard-oelze 🇩🇪 701 87 10ms 20 Mar 2021 317th osmith93 701 87 11ms 31 Jul 2021 317th jdw1023 701 87 10ms 29 Apr 2022 317th mstang107 701 87 11ms 20 Dec 2023 317th Pale-Vessel 701 87 13ms 18 May 2024 317th codingisgreatbutiamnot 701 87 11ms 25 Jul 2024 317th NickTheEASDude 🇺🇸 701 87 17ms 19 Sep 2024 317th nulzo 701 87 16ms 19 Oct 2025 317th rustykitty 🇺🇸 701 87 11ms 23 Oct 2025 337th zuparnowa 693 88 12ms 4 Apr 2019 337th ay2718 693 88 11ms 12 Aug 2019 337th henrytranter 693 88 11ms 20 Sep 2019 337th lordnord 693 88 16ms 28 Jan 2020 337th jmhowl 693 88 10ms 25 Mar 2020 337th SupImDos 693 88 11ms 25 Jun 2020 337th abailey2020 🇺🇸 693 88 11ms 12 Dec 2020 337th AkashTandon167 693 88 11ms 29 Dec 2020 337th alexhuntley 693 88 12ms 11 Apr 2021 337th jhunterkohler 693 88 16ms 20 May 2021 337th bbakersmith 693 88 11ms 14 Jul 2021 337th hymanimy 693 88 10ms 28 Jul 2021 337th benwilliamgraham 693 88 16ms 22 Oct 2021 337th amollberg 🇸🇪 693 88 11ms 25 Jan 2022 337th nullie 693 88 11ms 10 Jun 2022 337th Kloppermand 🇩🇰 693 88 15ms 3 Oct 2022 337th WilliamKeating 693 88 16ms 9 Nov 2022 337th gussy420 693 88 10ms 26 Oct 2023 337th thienudomsrirungruang 693 88 11ms 7 May 2024 337th Mabeloid 🇳🇴 693 88 12ms 30 Sep 2024 337th klixel 🇨🇦 693 88 11ms 18 Jul 2025 337th EthanJantz 693 88 11ms 12 Sep 2025 359th jiaminglimjm 🇲🇾 685 89 11ms 11 Dec 2019 359th markus-rekdal 685 89 14ms 10 Jan 2020 359th tnecio 685 89 12ms 21 Apr 2021 359th redbeancola 685 89 11ms 11 Oct 2021 359th Bonjour27891 🇻🇳 685 89 10ms 19 Feb 2022 359th MaxElf999 685 89 11ms 28 Sep 2022 359th cros107 🇦🇺 685 89 18ms 9 Aug 2023 359th VictorStenvers 🇳🇱 685 89 16ms 24 Apr 2024 359th CutSandstone 685 89 12ms 5 Jul 2024 359th Terobero 685 89 11ms 5 Sep 2024 359th raymur 685 89 11ms 11 Jul 2025 359th ethanlchristensen 685 89 11ms 19 Oct 2025 359th Matter1024 🇮🇳 685 89 11ms 15 Nov 2025 359th NoneTheFewer 685 89 16ms 25 Dec 2025 359th Aquateraneal 🇺🇸 685 89 12ms 2 days ago 374th SimonPeatman 678 90 11ms 2 Feb 2019 374th boxjelly 678 90 11ms 12 Feb 2021 374th mothcolada 🇺🇸 678 90 11ms 11 Mar 2021 374th ArmaanAS 678 90 11ms 26 Mar 2021 374th Y0UR-U5ERNAME 678 90 17ms 4 Sep 2021 374th Drew-j-Smith 678 90 11ms 16 Apr 2022 374th martinnorling 🇸🇪 678 90 17ms 26 Apr 2022 374th NerdyMcNerd42 678 90 17ms 27 Oct 2022 374th te-chnical 678 90 10ms 12 May 2025 374th ffelixm 678 90 11ms 28 May 2025 384th lmeuser 670 91 11ms 2 Dec 2017 384th lrustand 670 91 14ms 11 Jan 2018 384th hyperneutrino 670 91 12ms 3 Jun 2018 384th Deepztream 670 91 11ms 3 Sep 2018 384th AforAmpere 670 91 11ms 6 Jun 2020 384th The3gs 670 91 11ms 30 Aug 2020 384th ydevor 🇮🇱 670 91 12ms 4 Dec 2020 384th pascscha 670 91 17ms 15 May 2021 384th Omega65536 🇩🇪 670 91 11ms 23 Jun 2021 384th fgrosshans 🇫🇷 670 91 10ms 23 Feb 2022 384th MichaelMBradley 🇨🇦 670 91 11ms 27 May 2022 384th lemogne 670 91 10ms 2 Jun 2022 384th vishwathg 670 91 19ms 14 Aug 2022 384th mbittner20 670 91 10ms 27 May 2023 384th adamnielson42 🇺🇸 670 91 11ms 21 Aug 2023 384th nhausspiegel 670 91 11ms 26 Oct 2023 384th itljan30 670 91 11ms 30 Jan 2025 First Prev 321–400 of 625 Next Last