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?
Scrambled Sort 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 296th KasperKivimaeki 🇫🇮 727 92 11ms 2 Jul 2025 296th 5cw 🇺🇸 727 92 11ms 5 Jul 2025 296th wuduculfre 727 92 12ms 22 Jul 2025 296th annaproxy 727 92 13ms 26 Aug 2025 296th ryyyn 🇺🇸 727 92 12ms 2 Oct 2025 296th sisyphus-ppcg 🇦🇺 727 92 11ms 24 Nov 2025 296th HPWiz 🇳🇿 727 92 11ms 26 Nov 2025 296th blaztoma 🇱🇹 727 92 11ms 23 Jan 2026 296th firegene 🇮🇪 727 92 11ms 26 days ago 330th HumanoidCPU 727 118 10ms 28 Nov 2025 331st edsrzf 🇳🇿 727 139 484ms 2 Jun 2025 332nd Shanethegamer 🇺🇸 726 77 939ms 31 May 2025 333rd targrik 724 148 5ms 2 Jun 2025 334th AlephSquirrel 723 33 2ms 8 Nov 2025 335th prestosilver 🇺🇸 723 66 37ms 24 Nov 2025 336th albanian-laundromat 723 321 1,430ms 1 Nov 2025 337th Shanethegamer 🇺🇸 721 119 11ms 31 May 2025 337th error256 721 119 11ms 4 Jun 2025 337th stefangimmillaro 721 119 10ms 8 Jun 2025 340th retrohun 721 122 29ms 2 Jun 2025 341st davecame 720 93 11ms 1 Jun 2025 341st dokutan 720 93 13ms 5 Jun 2025 341st vgamula 🇺🇦 720 93 11ms 15 Jul 2025 341st jared-hughes 720 93 11ms 26 Nov 2025 345th ovs-code 🇩🇪 716 260 440ms 28 May 2025 346th Natanaelel 🇸🇪 714 77 22ms 2 May 2025 347th emgordon154 712 67 36ms 6 May 2025 347th janlelis 712 67 39ms 2 Jun 2025 349th frosster 🇨🇦 712 215 4ms 16 Feb 2026 350th edsrzf 🇳🇿 710 151 6ms 5 Jun 2025 351st alemelis 708 79 1,647ms 3 Jun 2025 352nd stefangimmillaro 708 176 145ms 1 Jun 2025 353rd Mabeloid 🇳🇴 704 95 11ms 2 Jun 2025 353rd BREMAUCY 🇫🇷 704 95 11ms 3 Jun 2025 353rd neihousaigaai 704 95 11ms 7 Jun 2025 353rd snyderek 🇺🇸 704 95 11ms 15 Jun 2025 353rd RobertHoeh 704 95 11ms 19 Jun 2025 353rd klixel 🇨🇦 704 95 12ms 19 Jun 2025 353rd SirBogman 🇺🇸 704 95 11ms 30 Jun 2025 353rd dirckvdende 704 95 12ms 12 Jul 2025 353rd scpchicken 🇵🇼 704 95 11ms 14 Aug 2025 353rd jacekwladzinski 704 95 12ms 9 Oct 2025 353rd Matter1024 🇮🇳 704 95 12ms 15 Nov 2025 353rd CommandLeo 🇮🇹 704 95 11ms 27 Nov 2025 353rd Lv0Sys 🇵🇱 704 95 11ms 10 Dec 2025 353rd 051 🇸🇬 704 95 11ms 16 Dec 2025 367th bknower 704 122 11ms 26 Jun 2025 368th syntax-rules 703 265 3,002ms 17 Jun 2025 369th stefangimmillaro 699 210 340ms 2 Jun 2025 370th Andrey-Plotnikov 698 123 10ms 6 Jun 2025 371st xsot 🇸🇬 698 156 7ms 11 Dec 2025 372nd DialFrost 🇸🇬 697 96 11ms 3 Feb 2025 372nd madex 🇩🇪 697 96 11ms 1 Jun 2025 372nd OllieBoyne 🇬🇧 697 96 11ms 2 Jul 2025 372nd adoxography 697 96 11ms 31 Aug 2025 372nd Bmrl7 697 96 11ms 26 Dec 2025 377th snoozingnewt 🇨🇦 697 272 325ms 6 Dec 2025 378th emgordon154 696 140 112ms 4 Dec 2025 379th zacjl 695 110 91ms 3 Jun 2025 380th CaedenHarper 🇨🇦 694 154 436ms 17 Oct 2025 381st Shanethegamer 🇺🇸 691 71 8ms 31 May 2025 382nd ahmetdemirag 🇨🇾 690 97 10ms 1 Jun 2025 382nd RaBa21 🇭🇺 690 97 12ms 18 Jul 2025 382nd StefanHabel 🇨🇦 690 97 11ms 1 Feb 2026 385th MeWhenI 🇻🇦 690 207 52ms 12 Jul 2025 386th error256 688 111 20ms 3 Jun 2025 387th HumanoidCPU 687 87 443ms 26 Nov 2025 388th KatieLG 🇬🇧 687 230 201ms 31 May 2025 389th jgbaldwinbrown 687 272 2ms 28 Jan 2026 390th DialFrost 🇸🇬 684 86 798ms 17 Feb 2026 391st madex 🇩🇪 684 273 2ms 4 days ago 392nd Mikey-Beep 🇬🇧 683 98 10ms 24 Jul 2025 392nd Aquateraneal 🇺🇸 683 98 11ms 14 Feb 2026 394th IISResetMe 682 78 730ms 1 Jun 2025 395th DialFrost 🇸🇬 682 226 429ms 19 Nov 2025 396th aditsu 681 126 12ms 12 Aug 2025 397th DialFrost 🇸🇬 681 143 123ms 14 Dec 2025 398th Shanethegamer 🇺🇸 681 232 176ms 3 Jun 2025 399th stefangimmillaro 680 326 43ms 1 Jun 2025 400th BREMAUCY 🇫🇷 679 88 476ms 3 Jun 2025 First Prev 321–400 of 639 Next Last