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?
Repeating Decimals 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 241st postie77 715 243 409ms 14 Aug 2024 242nd inventshah 711 255 444ms 13 Jul 2023 243rd targrik 708 178 9ms 23 Oct 2025 244th Lv0Sys 🇵🇱 706 155 11ms 25 Feb 2026 245th Yax42 🇫🇷 706 246 484ms 19 Nov 2025 246th MeWhenI 🇻🇦 703 246 15ms 7 Jan 2025 247th Alex-x90 🇺🇸 703 258 441ms 19 Feb 2023 248th Shanethegamer 🇺🇸 700 151 32ms 3 Feb 2023 248th boboquack 700 151 17ms 27 Nov 2023 250th the-zammers 700 308 169ms 17 Oct 2023 251st JOrE20 700 414 26ms 7 Feb 2026 252nd ovs-code 🇩🇪 699 158 158ms 17 Apr 2025 253rd scpchicken 🇵🇼 698 289 290ms 3 Feb 2023 254th BambooleanLogic 🇸🇪 697 157 10ms 2 Feb 2023 255th lynn 696 152 16ms 3 Feb 2023 255th anter69 🇭🇺 696 152 17ms 12 Feb 2025 257th albanian-laundromat 694 300 256ms 7 Dec 2025 258th annaproxy 693 89 35ms 22 Oct 2023 259th MeWhenI 🇻🇦 693 295 44ms 7 Jul 2023 260th m-tkach 🇺🇦 690 420 57ms 24 Jun 2024 261st rcmlz 687 67 158ms 13 Apr 2024 262nd anoopsg 🇮🇳 686 276 134ms 7 Aug 2025 263rd janbehrens 🇩🇪 684 254 405ms 7 Jul 2023 264th stefangimmillaro 684 345 242ms 8 Nov 2023 265th mrxz 🇳🇱 679 161 10ms 11 Aug 2024 266th MeWhenI 🇻🇦 676 257 433ms 12 Feb 2023 267th Irratix 🇳🇱 675 162 10ms 1 Feb 2023 268th weliveinhell 🇭🇹 673 300 318ms 6 Jun 2024 269th Shanethegamer 🇺🇸 673 309 728ms 6 Feb 2023 270th MeWhenI 🇻🇦 671 163 11ms 11 Apr 2023 271st Shanethegamer 🇺🇸 670 150 487ms 16 Jan 2024 272nd MichalMarsalek 🇨🇿 670 243 437ms 16 Aug 2023 273rd CLOStrophobic 🇮🇹 669 267 9ms 9 Mar 2025 274th CatsAreFluffy 667 153 63ms 11 Feb 2023 275th ndren 665 159 18ms 25 Nov 2025 276th AlephSquirrel 664 269 9ms 19 Jan 2025 277th IanUtley 662 179 150ms 2 Apr 2024 278th commandz0 🇺🇸 661 160 19ms 1 Feb 2023 279th RockOfStone 661 197 2ms 13 Mar 2024 280th Bubbler-4 660 100 9ms 1 Feb 2023 280th SirBogman 🇺🇸 660 100 3ms 5 Dec 2023 282nd JOrE20 659 166 10ms 9 Feb 2026 283rd JohandeRuiter 🇳🇱 659 213 2ms 21 Jan 2025 284th yzhs 🇩🇪 657 70 150ms 22 Jun 2023 285th MeWhenI 🇻🇦 656 162 275ms 15 Feb 2023 286th MeWhenI 🇻🇦 655 160 1,343ms 11 May 2023 287th CaedenHarper 🇨🇦 651 168 10ms 6 Nov 2025 288th GrayJoKing 🇦🇺 651 218 65ms 25 Nov 2023 289th stefangimmillaro 651 267 472ms 15 Sep 2024 290th itsh01 647 169 9ms 21 Aug 2023 291st snyderek 🇺🇸 644 218 2ms 20 Jan 2025 292nd lelbal 641 165 16ms 15 Aug 2024 293rd MeWhenI 🇻🇦 639 284 445ms 21 Apr 2023 294th janbehrens 🇩🇪 637 161 7ms 7 Jul 2023 295th Argeento 🇵🇱 636 172 11ms 27 Aug 2023 296th Waffle3z 635 205 2ms 12 Sep 2023 297th MeWhenI 🇻🇦 635 250 421ms 11 Oct 2023 298th commandz0 🇺🇸 632 159 494ms 1 Sep 2025 299th veehz 632 173 10ms 21 Feb 2023 300th MeWhenI 🇻🇦 631 175 155ms 3 Aug 2024 301st voytxt 🇨🇿 625 175 11ms 20 Apr 2024 302nd janbehrens 🇩🇪 624 202 8ms 7 Jul 2023 303rd emgordon154 621 318 125ms 1 Feb 2026 304th jerrandolph 619 326 356ms 21 Dec 2023 305th stefangimmillaro 618 328 46ms 26 Apr 2025 306th scpchicken 🇵🇼 611 353 146ms 3 Feb 2023 307th MeWhenI 🇻🇦 610 144 2,189ms 11 Apr 2023 308th CaedenHarper 🇨🇦 607 264 393ms 11 hours ago 309th jmerle 🇳🇱 607 286 414ms 1 Feb 2023 310th DialFrost 🇸🇬 606 236 122ms 23 Nov 2025 311th acollett89 601 182 12ms 7 Aug 2025 312th rucin93 🇵🇱 601 184 164ms 31 Oct 2024 313th MeWhenI 🇻🇦 600 286 545ms 28 Apr 2023 314th emplv 🇱🇻 599 337 292ms 3 Feb 2023 315th BlankSpruce 597 235 2ms 16 Feb 2023 316th lukegustafson 🇺🇸 594 184 11ms 7 Dec 2023 317th Alex-x90 🇺🇸 594 236 2ms 13 Mar 2023 318th Shanethegamer 🇺🇸 592 220 2ms 10 Feb 2023 319th MeWhenI 🇻🇦 592 271 519ms 7 Nov 2025 320th Chinay-Domitrix 🇺🇸 591 227 2,780ms 13 days ago First Prev 241–320 of 564 Next Last