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?
Seven Segment 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 321st mokymok 🇺🇸 738 106 10ms 23 Jul 2021 322nd keelimeguy 🇺🇸 738 163 426ms 15 Oct 2023 323rd MeWhenI 🇻🇦 736 76 36ms 25 Dec 2021 324th stefangimmillaro 736 129 2,618ms 10 Nov 2024 325th emplv 🇱🇻 736 184 268ms 18 Jan 2022 326th sean-niemann 🇺🇸 735 131 1ms 18 Jan 2025 327th omurakazuaki 🇯🇵 734 123 10ms 13 Feb 2021 328th Shanethegamer 🇺🇸 733 139 1,021ms 8 Jan 2022 329th marcin7Cd 733 169 5ms 8 Feb 2021 330th villfa 732 132 4ms 9 May 2019 331st stefangimmillaro 732 185 284ms 13 Nov 2023 332nd Babafaba 731 107 10ms 25 Oct 2025 333rd pardouin 🇫🇷 731 136 1ms 10 Sep 2024 334th LHLaurini 🇧🇷 729 165 438ms 15 Aug 2024 335th madeforlosers 728 124 10ms 8 Nov 2023 336th AlephSquirrel 726 137 2ms 18 Apr 2025 337th user189032 726 179 119ms 29 May 2019 337th timvermeulen 726 179 118ms 19 Jan 2020 337th Natanaelel 🇸🇪 726 179 124ms 27 Jun 2023 340th edsrzf 🇳🇿 725 125 4ms 17 Feb 2026 341st Yewzir 🇧🇪 724 108 17ms 7 Dec 2023 341st Openstreetmapler 724 108 20ms 5 May 2025 343rd emgordon154 723 111 1,258ms 20 Nov 2024 344th iznax 723 131 356ms 21 Nov 2021 345th lukegustafson 🇺🇸 722 125 11ms 27 Jun 2024 345th dokutan 722 125 11ms 15 Aug 2024 347th MeWhenI 🇻🇦 721 134 5ms 28 May 2023 348th UnderKoen 🇳🇱 721 258 2ms 20 Jan 2025 349th Herbert00709 🇵🇱 720 138 1ms 9 Jun 2024 350th typeswitch-dev 🇵🇹 720 147 4ms 25 Jul 2023 351st MeWhenI 🇻🇦 719 159 409ms 27 Jul 2024 352nd rucin93 🇵🇱 719 173 525ms 24 Sep 2025 353rd bstrautin 718 102 283ms 26 Jul 2020 354th dokutan 718 109 16ms 28 Jul 2024 355th stefangimmillaro 718 181 148ms 14 Oct 2024 356th m-tkach 🇺🇦 718 190 25ms 26 Oct 2024 357th MeWhenI 🇻🇦 717 139 149ms 10 hours ago 358th didion0 🇺🇸 716 126 11ms 28 Jan 2021 358th sebipopa 🇷🇴 716 126 11ms 12 May 2023 358th two-bad 🇬🇧 716 126 11ms 13 Feb 2024 361st CLOStrophobic 🇮🇹 716 173 5ms 3 Feb 2025 362nd MeWhenI 🇻🇦 715 130 3ms 1 Nov 2023 363rd MostParsingVex 715 139 2ms 31 May 2024 364th primo-ppcg 🇹🇭 715 174 476ms 10 Sep 2020 364th namelessiw 715 174 471ms 6 Oct 2025 366th MeWhenI 🇻🇦 713 143 1,021ms 29 Nov 2021 367th MeWhenI 🇻🇦 713 190 287ms 8 Aug 2023 368th postie77 712 133 402ms 21 Nov 2021 369th albanian-laundromat 712 164 1ms 11 Jul 2025 370th edre 711 110 9ms 6 May 2018 370th Attero 🇸🇪 711 110 10ms 25 Sep 2020 370th Sloimayyy 711 110 10ms 24 Aug 2022 370th wh3n3v3r 🇨🇿 711 110 10ms 20 Nov 2024 370th blaztoma 🇱🇹 711 110 10ms 17 Sep 2025 375th jake-freeman 711 127 12ms 30 Jan 2020 375th jared-hughes 711 127 11ms 9 Sep 2021 377th Irratix 🇳🇱 711 169 454ms 3 Aug 2023 378th clockworknazo 710 131 3ms 27 Feb 2023 379th MeWhenI 🇻🇦 710 140 1ms 5 Jul 2024 380th Shanethegamer 🇺🇸 710 161 384ms 3 Dec 2022 381st Shanethegamer 🇺🇸 710 194 2ms 10 Sep 2022 382nd prplz 🇦🇺 708 79 59ms 11 Mar 2020 382nd SirBogman 🇺🇸 708 79 34ms 1 Nov 2021 384th stefangimmillaro 708 159 109ms 13 Nov 2023 385th SirBogman 🇺🇸 708 166 40ms 8 Jun 2023 386th emgordon154 708 220 1,689ms 28 Dec 2025 387th stefangimmillaro 707 134 363ms 13 Nov 2023 388th janbehrens 🇩🇪 707 170 62ms 20 Nov 2022 389th GolfingSuccess 🇬🇷 706 209 33ms 5 days ago 390th angel-p57 🇯🇵 706 316 1ms 16 Dec 2023 391st itsh01 705 128 11ms 21 Mar 2022 391st inventshah 705 128 10ms 23 Aug 2022 393rd c0d3-4-F00d 🇩🇪 705 141 2ms 24 Jan 2022 393rd ZakkkkAttackkkk 🇵🇭 705 141 1ms 27 Jun 2023 395th verticallity 703 211 164ms 6 Apr 2022 396th primo-ppcg 🇹🇭 702 118 17ms 18 Feb 2020 397th KrausRaus 🇺🇸 700 129 11ms 28 Sep 2020 398th emgordon154 699 108 137ms 7 Aug 2024 399th leon-w 698 112 10ms 4 Jan 2019 399th ludwig-n 698 112 10ms 7 Apr 2021 First Prev 321–400 of 1,468 Next Last
