The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 2 days. Why not try and solve them ahead of time?
12 Days of Christmas 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 81st sean-niemann 🇺🇸 941 282 72ms 20 Oct 2025 82nd DialFrost 🇸🇬 940 198 687ms 12 May 2024 83rd shelerr 940 201 17ms 2 Jul 2022 83rd sean-niemann 🇺🇸 940 201 16ms 2 Jan 2024 83rd plcc0 940 201 15ms 31 Jan 2026 86th Steffan153 🇫🇮 940 212 10ms 12 Dec 2023 87th Steffan153 🇫🇮 940 229 12ms 21 Aug 2024 88th DialFrost 🇸🇬 937 225 82ms 17 Mar 2025 89th JayXon 🇺🇸 937 289 136ms 26 Dec 2023 90th saito-ta 🇯🇵 937 376 4ms 17 May 2023 91st lifthrasiir 🇰🇷 936 198 403ms 2 Dec 2024 91st kg583 🇺🇸 936 198 418ms 5 Feb 2026 93rd Shanethegamer 🇺🇸 936 202 17ms 11 Mar 2022 93rd neel11235813 936 202 17ms 14 Feb 2023 95th cywong-amino 🇭🇰 936 230 11ms 30 Sep 2020 96th sean-niemann 🇺🇸 935 282 4ms 8 Dec 2025 97th frosster 🇨🇦 934 241 2ms 7 Feb 2026 98th primo-ppcg 🇹🇭 933 198 315ms 10 Jun 2020 99th dokutan 933 327 2ms 13 Nov 2024 100th janlelis 932 198 35ms 22 Sep 2024 101st thisishowmymindworks 🇳🇴 932 231 11ms 24 May 2023 102nd sean-niemann 🇺🇸 932 260 9ms 4 Jun 2025 103rd sean-niemann 🇺🇸 931 199 419ms 27 Jul 2024 104th RYNO8 931 203 18ms 29 Aug 2021 104th dscholtz-lab49 931 203 17ms 24 May 2023 104th idavidka 🇭🇺 931 203 17ms 25 May 2023 104th sudhackar 931 203 17ms 26 Feb 2026 108th primo-ppcg 🇹🇭 930 242 2ms 15 Feb 2020 109th error256 930 290 1,450ms 28 Mar 2025 110th SirBogman 🇺🇸 929 199 315ms 27 Jan 2024 111th prplz 🇦🇺 928 199 37ms 8 Jan 2020 111th SirBogman 🇺🇸 928 199 35ms 27 Jan 2024 111th tatzyr 🇯🇵 928 199 34ms 12 Dec 2024 114th apreg 928 232 13ms 22 May 2023 114th snoozingnewt 🇨🇦 928 232 12ms 14 Feb 2024 116th GrayJoKing 🇦🇺 927 170 136ms 23 Aug 2020 116th SirBogman 🇺🇸 927 170 164ms 23 Jan 2024 118th DialFrost 🇸🇬 927 204 17ms 9 Feb 2023 118th apreg 927 204 16ms 31 May 2023 118th anter69 🇭🇺 927 204 16ms 20 Nov 2023 118th ndren 927 204 17ms 29 Dec 2023 118th SirBogman 🇺🇸 927 204 20ms 23 Jan 2024 118th albanian-laundromat 927 204 17ms 29 Mar 2025 118th emgordon154 927 204 17ms 14 Apr 2025 118th AnAwesomGuy 927 204 16ms 21 Dec 2025 126th JayXon 🇺🇸 927 338 1,227ms 16 Mar 2022 127th neel11235813 926 200 396ms 16 Mar 2024 128th rucin93 🇵🇱 925 285 3ms 8 Dec 2025 129th HPWiz 🇳🇿 925 378 1,027ms 21 Jun 2022 130th MeWhenI 🇻🇦 924 233 10ms 1 Mar 2022 131st IanUtley 924 330 119ms 19 Nov 2022 132nd JayXon 🇺🇸 924 379 25ms 27 Jul 2023 133rd Shanethegamer 🇺🇸 922 201 459ms 13 Jan 2025 133rd snoozingnewt 🇨🇦 922 201 410ms 13 Sep 2025 135th commandz0 🇺🇸 922 205 17ms 22 Aug 2023 135th SB-945 922 205 17ms 17 Apr 2024 135th InigoK 🇺🇸 922 205 16ms 14 Aug 2025 135th qpwoeirut 922 205 18ms 2 Oct 2025 139th primo-ppcg 🇹🇭 922 360 204ms 18 Mar 2020 140th kg583 🇺🇸 920 226 41ms 14 Feb 2025 141st xyangst 920 234 11ms 3 Oct 2024 141st duckyluuk 🇳🇱 920 234 16ms 4 Oct 2024 143rd albanian-laundromat 920 266 3ms 25 Oct 2025 144th prplz 🇦🇺 918 206 17ms 19 Oct 2019 144th jmerle 🇳🇱 918 206 16ms 22 Jun 2023 144th 2011-Chan-Ethan 918 206 17ms 9 Jul 2023 144th dokutan 918 206 17ms 21 Mar 2025 144th Mukundan314 918 206 16ms 29 Jun 2025 144th CornerMercury 🇬🇧 918 206 17ms 22 Dec 2025 150th nwellnhof 🇩🇪 918 264 2ms 20 Sep 2020 151st inventshah 917 267 2ms 15 Sep 2022 152nd trinityy-7 917 347 5ms 8 Aug 2025 153rd m-tkach 🇺🇦 917 489 2ms 22 Oct 2024 154th madeforlosers 916 235 14ms 8 Nov 2023 154th lukegustafson 🇺🇸 916 235 12ms 27 Jun 2024 154th Liniarc 916 235 12ms 21 Nov 2024 154th AnAwesomGuy 916 235 11ms 17 Sep 2025 158th sean-niemann 🇺🇸 916 281 1,023ms 26 Nov 2024 159th KasperKivimaeki 🇫🇮 914 265 10ms 4 Jun 2025 160th primo-ppcg 🇹🇭 914 419 1ms 19 Nov 2022 First Prev 81–160 of 4,056 Next Last
