The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 6 days. Why not try and solve them ahead of time?
Transpose Sentence 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 541st KasperKivimaeki 🇫🇮 687 96 13ms 5 Jul 2025 541st FlorianCassayre 🇫🇷 687 96 15ms 5 Aug 2025 541st edsrzf 🇳🇿 687 96 14ms 21 Aug 2025 541st davecame 687 96 14ms 27 Oct 2025 541st guilhem-roy 🇫🇷 687 96 14ms 22 Nov 2025 541st CommandLeo 🇮🇹 687 96 13ms 27 Nov 2025 541st qpwoeirut 687 96 27ms 1 Feb 2026 541st Lv0Sys 🇵🇱 687 96 28ms 23 Feb 2026 541st happppya 687 96 27ms 7 days ago 541st solisolu 687 96 27ms 4 hours ago 571st SirBogman 🇺🇸 684 87 493ms 29 Jul 2024 571st commandz0 🇺🇸 684 87 462ms 1 Sep 2025 573rd Shanethegamer 🇺🇸 684 96 193ms 28 Jul 2024 574th edsrzf 🇳🇿 684 105 67ms 22 Aug 2025 575th Shanethegamer 🇺🇸 684 106 589ms 24 Jul 2024 576th dokutan 684 121 197ms 25 Jul 2024 576th MeWhenI 🇻🇦 684 121 202ms 27 Jul 2024 578th LostSyntax21 🇬🇧 682 165 28ms 4 days ago 579th BrunoVisnadi 🇧🇷 680 97 33ms 2 days ago 579th Emutis 🇱🇹 680 97 13ms 2 days ago 581st GrayJoKing 🇦🇺 680 122 25ms 4 Aug 2024 582nd dokutan 679 65 53ms 12 Feb 2025 583rd albanian-laundromat 679 70 9ms 26 Sep 2025 584th emgordon154 679 115 6ms 27 Dec 2024 585th Shanethegamer 🇺🇸 679 142 1,675ms 29 Jul 2024 586th Natanaelel 🇸🇪 678 76 1,347ms 10 Aug 2024 587th didion0 🇺🇸 678 93 12ms 10 Jan 2025 588th DialFrost 🇸🇬 678 232 1,637ms 19 Jan 2026 589th dokutan 677 134 418ms 4 Apr 2025 590th dokutan 676 81 183ms 30 Jul 2024 591st ovs-code 🇩🇪 675 123 62ms 25 Jul 2024 592nd emgordon154 675 126 6ms 8 Feb 2026 593rd krcs 🇵🇱 673 74 1,538ms 15 Oct 2024 594th RaBa21 🇭🇺 673 98 17ms 19 Jul 2025 595th ashtraypettingzoo 🇺🇸 672 34 4ms 31 Aug 2024 596th msbranicky 672 132 19ms 27 Aug 2024 597th sean-niemann 🇺🇸 672 135 428ms 25 Jul 2024 598th CaedenHarper 🇨🇦 671 94 11ms 22 Aug 2025 599th rzv-me 671 101 29ms 1 Oct 2024 600th emgordon154 671 152 64ms 8 Feb 2026 601st MeWhenI 🇻🇦 669 77 1,339ms 29 Jul 2024 602nd dokutan 669 107 56ms 26 Dec 2025 603rd dokutan 669 260 1,418ms 14 Jan 2025 604th Shanethegamer 🇺🇸 668 82 273ms 31 Jul 2024 605th MeWhenI 🇻🇦 667 145 1,305ms 29 Jul 2024 606th Yax42 🇫🇷 667 150 527ms 14 Jan 2026 607th bnic24 666 99 29ms 15 Aug 2024 608th albanian-laundromat 666 160 47ms 18 Dec 2025 609th TomvdPeet 665 102 6ms 4 Dec 2025 610th RedzGoose 🇦🇺 665 129 123ms 25 Oct 2024 611th KaeruCT 664 95 14ms 1 Sep 2024 612th Openstreetmapler 662 118 25ms 8 days ago 613th aadenboy 🇺🇸 662 134 2ms 7 days ago 614th SirBogman 🇺🇸 661 39 34ms 26 Jul 2024 615th MeWhenI 🇻🇦 660 72 3ms 25 Jul 2024 616th JunkIce 659 100 12ms 24 Nov 2024 617th stefangabos 🇷🇴 657 96 11ms 22 Aug 2024 617th two-bad 🇬🇧 657 96 19ms 9 Sep 2024 619th IISResetMe 655 76 385ms 15 Nov 2024 620th MeWhenI 🇻🇦 655 361 289ms 1 Aug 2024 621st jgbaldwinbrown 654 130 4ms 30 Jan 2026 622nd bknower 653 101 23ms 26 Jun 2025 623rd MeWhenI 🇻🇦 652 104 27ms 25 Jul 2024 624th alexsave 650 97 11ms 29 Oct 2024 625th MeWhenI 🇻🇦 650 101 207ms 29 Jul 2024 626th DialFrost 🇸🇬 650 154 416ms 10 Oct 2025 627th whitsettbe 646 102 17ms 28 Jul 2024 627th retrohun 646 102 18ms 26 Jul 2025 629th jitwit 644 40 32ms 15 May 2025 630th emgordon154 642 181 15ms 23 May 2025 631st Sterls 640 103 12ms 2 Aug 2024 631st quimey 640 103 25ms 2 Aug 2024 631st Terobero 640 103 14ms 2 Sep 2024 631st jtaxen 640 103 11ms 26 Sep 2024 631st Powerroff 640 103 17ms 9 Nov 2024 631st aksyristos 640 103 16ms 17 Nov 2024 631st Mabeloid 🇳🇴 640 103 28ms 4 May 2025 631st InigoK 🇺🇸 640 103 13ms 13 Aug 2025 631st Bmrl7 640 103 14ms 31 Aug 2025 640th Sakisan 🇧🇪 639 66 1,055ms 30 Dec 2025 First Prev 561–640 of 950 Next Last