The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 4 days. Why not try and solve them ahead of time?
Zodiac Signs 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 241st ndren 747 121 19ms 27 Aug 2023 242nd jared-hughes 746 303 32ms 6 Jul 2024 243rd primo-ppcg 🇹🇭 745 148 69ms 11 Oct 2023 244th MeWhenI 🇻🇦 745 155 153ms 10 hours ago 245th lynn 745 201 161ms 9 Jun 2022 246th JOrE20 741 133 12ms 21 Feb 2026 247th Shanethegamer 🇺🇸 739 172 10ms 5 Jul 2022 248th Shanethegamer 🇺🇸 737 230 3ms 28 Feb 2023 249th Steffan153 🇫🇮 735 134 12ms 4 Jul 2024 250th Alex-x90 🇺🇸 735 190 2,948ms 29 May 2024 251st annaproxy 733 168 21ms 15 Jun 2023 252nd hemphen 730 188 405ms 21 Oct 2022 253rd tatzyr 🇯🇵 729 99 40ms 14 Mar 2025 254th Natanaelel 🇸🇪 729 132 1,383ms 11 Jun 2022 255th Shanethegamer 🇺🇸 725 102 537ms 2 May 2023 256th MeWhenI 🇻🇦 723 148 17ms 9 May 2024 257th Natanaelel 🇸🇪 720 85 4ms 11 Jun 2022 258th MeWhenI 🇻🇦 720 166 2ms 5 Jul 2024 259th nwellnhof 🇩🇪 719 114 357ms 29 Oct 2024 260th jakobkordez 🇸🇮 717 126 31ms 27 Oct 2022 261st Kacarott 🇦🇺 716 154 73ms 7 May 2024 262nd roavin 716 167 2ms 12 Jun 2022 263rd targrik 714 178 1,037ms 8 days ago 264th albanian-laundromat 713 194 44ms 15 days ago 265th antimon2 🇯🇵 712 104 512ms 19 Jan 2026 266th MeWhenI 🇻🇦 711 404 1,436ms 20 Jun 2025 267th NewDefectus 🇮🇱 709 139 13ms 10 Jun 2022 267th Program-Pi 709 139 12ms 8 days ago 269th typeswitch-dev 🇵🇹 708 177 14ms 21 Aug 2023 270th retrohun 707 158 234ms 19 Jun 2022 271st MeWhenI 🇻🇦 705 198 442ms 12 Jun 2022 272nd MeWhenI 🇻🇦 704 140 13ms 5 May 2025 273rd MeWhenI 🇻🇦 700 242 3ms 10 Sep 2022 274th jared-hughes 699 141 12ms 19 Jan 2023 274th voytxt 🇨🇿 699 141 11ms 3 Jun 2023 276th sultan 698 238 438ms 9 Apr 2024 277th Shanethegamer 🇺🇸 696 56 79ms 28 Jul 2022 277th ovs-code 🇩🇪 696 56 138ms 26 May 2024 279th jatloe 695 130 328ms 23 Oct 2024 279th luuumine 🇫🇷 695 130 14ms 8 Nov 2025 281st prplz 🇦🇺 694 142 13ms 27 Dec 2023 282nd uttumuttu 🇫🇮 689 143 12ms 23 Feb 2024 282nd KatieLG 🇬🇧 689 143 12ms 5 Oct 2025 284th Argeento 🇵🇱 684 144 13ms 27 Aug 2023 285th annaproxy 684 219 163ms 4 Sep 2022 286th emgordon154 682 124 134ms 8 Jul 2025 287th tayloia 🇬🇧 680 145 12ms 18 May 2023 287th Larento 680 145 12ms 10 Oct 2023 289th MeWhenI 🇻🇦 680 156 8ms 13 Aug 2024 290th MarcMush 🇫🇷 679 109 1,203ms 3 Feb 2024 291st MeWhenI 🇻🇦 678 284 26ms 25 Jun 2022 292nd blaztoma 🇱🇹 676 193 116ms 8 Jan 2026 293rd nwellnhof 🇩🇪 675 107 40ms 10 Jun 2022 294th stefangimmillaro 675 213 42ms 26 Apr 2025 295th Steffan153 🇫🇮 673 110 474ms 23 May 2024 296th jared-hughes 673 166 1,242ms 18 Feb 2023 297th SirBogman 🇺🇸 672 58 69ms 20 Sep 2022 297th lynn 672 58 71ms 27 Mar 2023 299th Shanethegamer 🇺🇸 672 216 14ms 4 Oct 2024 300th inventshah 672 252 3ms 11 Sep 2022 301st SirBogman 🇺🇸 670 147 13ms 16 Jun 2022 301st trinityy-7 670 147 11ms 15 Mar 2024 303rd MeWhenI 🇻🇦 669 126 3ms 29 Apr 2023 304th neel11235813 669 135 20ms 16 Mar 2024 304th wh3n3v3r 🇨🇿 669 135 20ms 14 Nov 2024 306th Natanaelel 🇸🇪 669 224 165ms 11 Jun 2022 307th stefangimmillaro 668 108 36ms 26 Dec 2024 308th sisyphus-ppcg 🇦🇺 667 78 6ms 18 Jan 2023 309th fkantelberg 664 136 14ms 21 Jul 2025 310th primo-ppcg 🇹🇭 662 164 6ms 6 Aug 2023 311th MeWhenI 🇻🇦 660 173 3ms 11 Oct 2023 312th KatieLG 🇬🇧 656 110 37ms 2 Oct 2025 313th Shanethegamer 🇺🇸 652 281 232ms 16 Oct 2022 314th albanian-laundromat 652 477 13ms 25 Nov 2025 315th Shanethegamer 🇺🇸 650 203 112ms 14 Oct 2022 316th CaedenHarper 🇨🇦 650 250 297ms 29 Oct 2025 317th Shanethegamer 🇺🇸 649 172 273ms 18 Nov 2023 318th Natanaelel 🇸🇪 646 113 36ms 12 Jun 2022 319th ovs-code 🇩🇪 645 129 532ms 21 Jun 2025 320th 4atj 645 140 12ms 29 Jun 2025 First Prev 241–320 of 665 Next Last