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?
Zodiac Signs 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 320th Lv0Sys 🇵🇱 770 172 19ms 26 Feb 2026 322nd GolfingSuccess 🇬🇷 768 151 539ms 20 Jan 2024 323rd KasperKivimaeki 🇫🇮 768 163 2ms 6 Jan 2025 324th edsrzf 🇳🇿 767 198 14ms 20 Feb 2025 325th MeWhenI 🇻🇦 766 205 538ms 30 Jan 2023 326th blaztoma 🇱🇹 763 126 36ms 8 Jan 2026 327th Natanaelel 🇸🇪 761 132 1,383ms 11 Jun 2022 328th Waffle3z 759 162 3ms 15 Jun 2022 329th Natanaelel 🇸🇪 757 106 156ms 11 Jun 2022 330th annaproxy 757 170 21ms 15 Jun 2023 331st jared-hughes 757 303 32ms 6 Jul 2024 332nd Shanethegamer 🇺🇸 755 172 10ms 5 Jul 2022 333rd Natanaelel 🇸🇪 754 85 4ms 11 Jun 2022 334th MeWhenI 🇻🇦 754 166 2ms 5 Jul 2024 335th Mabeloid 🇳🇴 753 154 487ms 6 Oct 2024 336th lynn 752 205 161ms 3 Feb 2023 337th Yax42 🇫🇷 750 160 11ms 20 Jan 2026 338th galloj 🇨🇿 749 177 11ms 2 Sep 2022 339th Alex-x90 🇺🇸 748 190 2,948ms 29 May 2024 340th hemphen 746 190 407ms 21 Oct 2022 341st Larento 745 161 12ms 10 Oct 2023 342nd elgan65536 🇺🇸 744 178 13ms 9 Apr 2024 343rd edsrzf 🇳🇿 744 187 6ms 21 Jun 2025 344th Shanethegamer 🇺🇸 744 233 11ms 25 Nov 2023 345th KatieLG 🇬🇧 739 157 420ms 19 Apr 2025 346th Program-Pi 736 163 12ms 9 days ago 347th jared-hughes 734 131 40ms 19 Sep 2022 348th MeWhenI 🇻🇦 732 168 156ms 3 Aug 2024 349th roavin 732 171 2ms 12 Jun 2022 350th itsh01 731 164 13ms 12 Jun 2022 351st targrik 730 178 1,037ms 9 days ago 352nd albanian-laundromat 729 196 44ms 16 days ago 353rd tatzyr 🇯🇵 728 132 37ms 14 Mar 2025 354th neihousaigaai 728 182 12ms 9 Jun 2022 355th MeWhenI 🇻🇦 727 137 289ms 29 Jan 2023 356th typeswitch-dev 🇵🇹 727 177 14ms 21 Aug 2023 357th jared-hughes 725 166 1,242ms 18 Feb 2023 358th albanian-laundromat 725 401 1,509ms 27 Oct 2025 359th scpchicken 🇵🇼 721 104 6ms 14 Jan 2023 360th MeWhenI 🇻🇦 718 198 442ms 12 Jun 2022 361st OllieBoyne 🇬🇧 716 185 19ms 10 Jun 2022 362nd edsrzf 🇳🇿 716 242 13ms 11 Dec 2025 363rd Troon 709 187 15ms 12 Mar 2025 363rd CaedenHarper 🇨🇦 709 187 17ms 15 Aug 2025 365th ndren 705 188 12ms 7 Dec 2025 366th annaproxy 704 219 163ms 4 Sep 2022 367th blaztoma 🇱🇹 702 193 116ms 8 Jan 2026 368th emgordon154 702 281 4ms 12 Nov 2025 369th MeWhenI 🇻🇦 701 156 8ms 13 Aug 2024 370th SB-945 701 189 18ms 12 Apr 2024 370th FortuiteMan 🇫🇷 701 189 13ms 15 Oct 2025 372nd Shanethegamer 🇺🇸 700 172 273ms 18 Nov 2023 373rd AlephSquirrel 699 248 15ms 24 Oct 2024 374th CedricGebistorf 697 190 12ms 25 Jun 2022 375th sultan 697 244 456ms 9 Apr 2024 376th suhasdara 694 191 12ms 16 Aug 2022 377th two-bad 🇬🇧 693 173 11ms 25 Feb 2024 378th MeWhenI 🇻🇦 691 126 3ms 29 Apr 2023 379th MeWhenI 🇻🇦 691 251 10ms 25 Nov 2023 379th CLOStrophobic 🇮🇹 691 251 11ms 28 Feb 2025 381st MarcMush 🇫🇷 690 128 895ms 3 Feb 2024 382nd guilhem-roy 🇫🇷 690 192 11ms 29 Jun 2022 382nd YAJUE114514 690 192 12ms 3 Aug 2025 384th Natanaelel 🇸🇪 688 224 165ms 11 Jun 2022 385th MeWhenI 🇻🇦 688 284 26ms 25 Jun 2022 386th AlephSquirrel 687 179 159ms 2 Dec 2025 387th LeeCamp 687 193 12ms 16 Jun 2022 388th stefangimmillaro 684 215 42ms 26 Apr 2025 389th Shanethegamer 🇺🇸 682 146 309ms 24 Feb 2023 390th MeWhenI 🇻🇦 681 223 15ms 12 Apr 2024 391st MeWhenI 🇻🇦 679 173 3ms 11 Oct 2023 392nd MeWhenI 🇻🇦 679 428 1,436ms 20 Jun 2025 393rd maxpelic 🇺🇸 678 177 15ms 10 Jul 2022 393rd helbling 🇨🇭 678 177 10ms 8 Oct 2024 395th Lv0Sys 🇵🇱 677 142 42ms 26 Feb 2026 396th snoozingnewt 🇨🇦 677 179 161ms 22 Nov 2025 397th Natanaelel 🇸🇪 676 111 6ms 11 Jun 2022 398th jared-hughes 675 182 7ms 28 Jul 2022 399th Natanaelel 🇸🇪 673 113 36ms 12 Jun 2022 400th emgordon154 673 186 3ms 6 Feb 2026 First Prev 321–400 of 670 Next Last