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 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 721st jakobkordez 🇸🇮 577 118 11ms 21 Oct 2022 722nd Shanethegamer 🇺🇸 577 173 111ms 6 Nov 2022 723rd Shanethegamer 🇺🇸 576 169 130ms 8 Nov 2024 724th frankgraziano 576 304 9ms 22 Feb 2026 725th frankgraziano 576 634 11ms 21 Oct 2025 726th Shanethegamer 🇺🇸 574 222 3,226ms 3 Nov 2024 727th medzes 571 169 26ms 24 Jul 2023 728th madex 🇩🇪 569 313 120ms 14 days ago 729th KenanSi 568 72 73ms 23 Feb 2022 730th ravnskjaer 🇩🇰 568 320 490ms 15 Dec 2025 731st HumanoidCPU 566 321 573ms 8 Nov 2025 732nd scpchicken 🇵🇼 565 62 114ms 17 Feb 2023 732nd SirFireball3521 565 62 121ms 17 Mar 2023 734th retrohun 564 177 140ms 16 Dec 2022 735th lynn 563 93 34ms 20 Apr 2021 736th madex 🇩🇪 562 255 2ms 13 days ago 737th Schmitt-Very-Cool 562 317 139ms 22 Nov 2025 737th tomh1012 562 317 133ms 4 Feb 2026 739th Shanethegamer 🇺🇸 561 73 762ms 15 Jan 2022 740th stellartux 560 212 36ms 24 Dec 2023 741st jupj 🇫🇮 560 256 4ms 21 Oct 2022 742nd msbranicky 560 318 178ms 28 Jul 2023 743rd msbranicky 560 331 314ms 28 Sep 2023 744th dokutan 557 173 11ms 15 Jun 2025 745th InigoK 🇺🇸 556 314 62ms 26 Sep 2025 746th j-Ewan 556 333 312ms 23 Mar 2022 747th boxjelly 555 327 510ms 24 Feb 2021 748th SirBogman 🇺🇸 554 249 540ms 6 Oct 2025 749th Shanethegamer 🇺🇸 554 351 81ms 21 Dec 2021 750th MeWhenI 🇻🇦 548 177 8ms 9 May 2024 750th Shanethegamer 🇺🇸 548 177 79ms 17 Sep 2024 752nd FortuiteMan 🇫🇷 540 126 10ms 23 Aug 2023 752nd dokutan 540 126 92ms 27 Jun 2024 754th MeWhenI 🇻🇦 539 303 8ms 29 Jul 2023 755th cbrt-x 539 337 504ms 18 Sep 2021 756th msbranicky 536 238 3,202ms 11 Jan 2025 757th keelimeguy 🇺🇸 535 333 734ms 8 May 2025 757th kmathis22 535 333 700ms 28 Jan 2026 759th IISResetMe 534 327 3ms 15 Nov 2024 760th robin-scragg 532 128 138ms 21 Aug 2025 761st marcin7Cd 531 264 207ms 1 Feb 2021 762nd JOrE20 531 329 37ms 23 Feb 2026 763rd jjatria 530 66 114ms 29 Jul 2022 764th scpchicken 🇵🇼 530 176 55ms 19 Dec 2022 765th tomh1012 528 277 495ms 4 Feb 2026 766th miabea73 528 344 454ms 26 Aug 2025 767th Yax42 🇫🇷 526 278 460ms 29 Jan 2026 768th Babafaba 525 273 2ms 6 Nov 2025 769th KrausRaus 🇺🇸 524 184 11ms 10 Nov 2020 770th dcgjb 523 159 389ms 1 May 2024 771st varhammer 523 268 113ms 10 Jan 2024 772nd SirBogman 🇺🇸 522 191 98ms 5 Dec 2022 773rd msbranicky 521 280 85ms 11 Oct 2023 774th bwat2 519 350 549ms 20 Jan 2022 775th Natanaelel 🇸🇪 518 79 195ms 16 Feb 2023 776th adyache 🇺🇸 518 393 1,121ms 7 Aug 2023 777th heanyang1 515 339 2ms 23 Apr 2025 777th dokutan 515 339 3ms 19 Nov 2025 779th aksyristos 515 346 113ms 4 Dec 2022 780th cduerm 515 360 333ms 13 Nov 2020 781st dokutan 514 125 445ms 14 Feb 2026 782nd janbehrens 🇩🇪 514 143 660ms 1 Nov 2021 783rd Betuaredead 513 105 4ms 14 Nov 2023 784th weliveinhell 🇭🇹 512 280 2ms 16 Nov 2023 785th Salutations45 509 196 2ms 8 Jan 2025 786th richard-oelze 🇩🇪 508 190 20ms 18 Apr 2021 787th emgordon154 508 191 35ms 6 Dec 2024 788th MeWhenI 🇻🇦 508 720 12ms 15 Nov 2023 789th emgordon154 505 81 23ms 10 days ago 790th c0d3-4-F00d 🇩🇪 505 284 2ms 23 May 2022 791st elgan65536 🇺🇸 504 135 18ms 10 Apr 2024 792nd DialFrost 🇸🇬 504 152 2,692ms 27 Feb 2025 793rd emgordon154 504 193 56ms 28 Dec 2024 794th MeWhenI 🇻🇦 504 198 461ms 12 Nov 2022 795th Yewzir 🇧🇪 503 193 35ms 8 Apr 2024 796th SilvanCodes 502 192 25ms 26 Mar 2022 796th helbling 🇨🇭 502 192 11ms 17 Jun 2024 798th Shanethegamer 🇺🇸 501 215 1,709ms 6 Jun 2023 799th eranws 500 193 10ms 10 Sep 2022 800th dokutan 499 162 130ms 15 Jun 2025 First Prev 721–800 of 1,186 Next Last