The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 3 days. Why not try and solve them ahead of time?
Levenshtein Distance 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 400th DialFrost 🇸🇬 820 155 699ms 27 Sep 2024 402nd m-tkach 🇺🇦 820 172 388ms 30 Jan 2024 403rd southpolenator 819 175 3ms 19 Jun 2023 404th MeWhenI 🇻🇦 817 102 438ms 15 Nov 2022 404th dokutan 817 102 462ms 20 Mar 2025 406th HumanoidCPU 817 218 129ms 12 Apr 2024 407th GolfingSuccess 🇬🇷 817 348 3,274ms 10 Feb 2025 408th Lv0Sys 🇵🇱 816 135 459ms 4 Dec 2025 409th primo-ppcg 🇹🇭 816 448 11ms 13 Aug 2025 410th GolfingSuccess 🇬🇷 815 191 810ms 30 Jan 2025 411th kg583 🇺🇸 815 197 52ms 26 Oct 2025 412th emgordon154 814 111 579ms 25 May 2025 413th ovs-code 🇩🇪 814 132 257ms 17 Apr 2025 414th SuperFola 813 107 79ms 26 days ago 414th kg583 🇺🇸 813 107 75ms 25 days ago 414th Steffan153 🇫🇮 813 107 73ms 7 days ago 414th pardouin 🇫🇷 813 107 74ms 13 hours ago 418th typeswitch-dev 🇵🇹 813 201 551ms 21 Aug 2025 419th xsot 🇸🇬 811 123 2ms 16 Jan 2025 420th kg583 🇺🇸 811 141 1,675ms 25 Jan 2026 421st neel11235813 810 84 1,521ms 13 Feb 2023 421st Ripick 810 84 1,504ms 18 May 2023 423rd Waffle3z 810 174 311ms 24 Oct 2022 424th edsrzf 🇳🇿 810 216 77ms 21 days ago 425th orthoplex 🇨🇽 809 103 425ms 1 Nov 2021 425th Indivicivet 809 103 444ms 9 Nov 2021 425th emgordon154 809 103 478ms 22 Dec 2021 428th pardouin 🇫🇷 807 158 3,838ms 18 Jan 2025 429th namelessiw 807 181 424ms 7 Jun 2024 430th GolfingSuccess 🇬🇷 807 203 3,601ms 23 Feb 2025 431st Frowny 806 65 112ms 14 Feb 2022 432nd maxhaton 806 112 470ms 1 Mar 2022 432nd dokutan 806 112 645ms 7 Nov 2025 434th DialFrost 🇸🇬 806 181 195ms 12 Apr 2025 435th MeWhenI 🇻🇦 805 253 10ms 21 Apr 2024 436th TheLastZombie 804 67 4ms 15 May 2024 437th sean-niemann 🇺🇸 804 124 4ms 16 Jan 2025 438th jared-hughes 804 137 19ms 7 Apr 2022 439th GolfingSuccess 🇬🇷 804 227 382ms 10 Sep 2022 440th btnlq 803 133 383ms 8 Mar 2021 441st canissimia 🇦🇶 803 272 2ms 30 Nov 2023 442nd Bubbler-4 802 51 3ms 1 Feb 2022 443rd Shanethegamer 🇺🇸 802 222 234ms 25 Feb 2022 443rd MeWhenI 🇻🇦 802 222 131ms 8 Mar 2023 445th m42km 801 98 524ms 27 Jan 2024 446th lynn 798 205 1,541ms 30 Nov 2021 447th jared-hughes 796 177 31ms 7 Apr 2022 448th ovs-code 🇩🇪 795 44 114ms 10 Jul 2024 449th edsrzf 🇳🇿 795 164 196ms 28 Nov 2025 450th m-tkach 🇺🇦 795 224 816ms 24 Oct 2022 451st CatsAreFluffy 794 160 303ms 14 Dec 2022 451st cbrt-x 794 160 173ms 20 Jan 2025 453rd nwellnhof 🇩🇪 794 184 392ms 21 Nov 2021 454th PatrickStephansen 🇿🇦 793 139 81ms 19 Feb 2021 455th MeWhenI 🇻🇦 790 197 12ms 7 Jan 2025 456th DialFrost 🇸🇬 790 231 728ms 3 Apr 2025 457th lynn 789 108 210ms 18 May 2021 457th ScottHamper 789 108 216ms 8 Jun 2021 457th primo-ppcg 🇹🇭 789 108 215ms 17 Aug 2021 460th Shanethegamer 🇺🇸 789 161 252ms 20 Jan 2024 461st DialFrost 🇸🇬 788 226 122ms 23 Jan 2026 462nd ovs-code 🇩🇪 787 137 3,357ms 1 Sep 2024 463rd NewDefectus 🇮🇱 787 182 3ms 24 Sep 2021 463rd KasperKivimaeki 🇫🇮 787 182 2ms 3 Sep 2025 465th m-tkach 🇺🇦 785 127 37ms 13 Feb 2024 466th vgamula 🇺🇦 785 163 181ms 9 Aug 2025 467th jared-hughes 783 183 5ms 23 Oct 2022 468th coreynash 782 141 81ms 28 Oct 2023 469th DialFrost 🇸🇬 781 167 236ms 1 Dec 2025 470th jared-hughes 780 288 187ms 6 Jul 2024 471st nwellnhof 🇩🇪 778 45 138ms 22 Sep 2021 471st GrayJoKing 🇦🇺 778 45 134ms 26 Sep 2021 471st primo-ppcg 🇹🇭 778 45 139ms 26 Sep 2021 471st o0lit3 🇺🇸 778 45 148ms 27 Sep 2021 475th KatieLG 🇬🇧 778 107 419ms 15 May 2021 476th MeWhenI 🇻🇦 778 227 45ms 17 May 2023 477th thisishowmymindworks 🇳🇴 776 142 10ms 15 Dec 2020 477th two-bad 🇬🇧 776 142 12ms 5 Feb 2024 479th MeWhenI 🇻🇦 776 188 278ms 13 Oct 2023 480th Yewzir 🇧🇪 775 110 224ms 15 May 2023 First Prev 401–480 of 1,189 Next Last