The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 5 days. Why not try and solve them ahead of time?
Seven Segment 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 801st tomh1012 569 189 16ms 5 Nov 2020 801st jhpaques 🇫🇷 569 189 10ms 28 Jul 2022 801st Europe2048 569 189 10ms 11 days ago 804th cam-lambda 569 221 6ms 1 May 2018 805th ConorOBrien-Foxx 568 145 34ms 11 Apr 2018 806th Shanethegamer 🇺🇸 568 178 2,789ms 28 Oct 2024 807th satutalo 🇫🇮 566 173 4ms 25 Sep 2023 808th dyc3 566 190 10ms 18 May 2020 808th Andre3582 566 190 10ms 28 Oct 2020 808th feherd 566 190 10ms 29 Aug 2021 808th brochmann 🇸🇪 566 190 10ms 6 Feb 2022 808th jakobkordez 🇸🇮 566 190 10ms 18 Nov 2022 808th KadinSchultz 566 190 10ms 20 hours ago 814th dokutan 565 208 3ms 3 Dec 2025 815th DialFrost 🇸🇬 564 99 38ms 31 Dec 2022 816th scpchicken 🇵🇼 564 126 102ms 23 Mar 2022 817th Babafaba 564 155 487ms 25 Oct 2025 818th dpethes 564 217 1,387ms 10 Jan 2024 819th rambox11 563 180 1ms 24 Jun 2019 819th Shanethegamer 🇺🇸 563 180 409ms 26 Mar 2024 821st dokutan 563 181 203ms 3 Jul 2024 822nd lrustand 563 191 10ms 19 Jan 2018 822nd yokasuretsu 563 191 10ms 30 Apr 2018 822nd marcin7Cd 563 191 10ms 15 Mar 2020 822nd The3gs 563 191 10ms 30 Aug 2020 822nd jiaminglimjm 🇲🇾 563 191 10ms 10 Nov 2020 822nd evanrittner 563 191 10ms 26 Feb 2021 828th Kibble 562 182 10ms 11 Jul 2020 829th MeWhenI 🇻🇦 561 167 2ms 8 Mar 2025 830th labster 560 127 124ms 25 Feb 2018 831st NewDefectus 🇮🇱 560 181 2ms 15 Feb 2021 831st DialFrost 🇸🇬 560 181 2ms 26 Feb 2024 833rd oriphi 560 192 9ms 17 Jun 2019 833rd karhuthebear 560 192 9ms 5 May 2022 835th KatieLG 🇬🇧 560 213 1ms 2 May 2021 836th nephila-nacrea 🇬🇧 559 130 3ms 17 Jan 2018 837th cure-honey 🇯🇵 559 220 40ms 7 Jul 2021 838th alichraghi 557 182 2ms 14 Oct 2021 839th luftj 557 193 11ms 3 May 2020 839th HassanAliKadhem 🇧🇭 557 193 9ms 4 Jan 2022 839th m42km 557 193 10ms 3 Feb 2024 839th ridingqwerty 🇺🇸 557 193 10ms 7 Feb 2024 843rd lukalotl 556 184 10ms 23 May 2021 844th LucaArgentiUCF 🇮🇹 556 221 40ms 14 Feb 2021 845th cbrt-x 555 237 143ms 5 Oct 2023 846th NeatCrown 🇨🇦 554 183 1ms 8 Mar 2023 847th kyleclaassen 554 194 10ms 1 Mar 2022 847th TobyBoyne 🇬🇧 554 194 10ms 14 Apr 2022 847th Tess2662 554 194 9ms 31 Aug 2022 850th Mabeloid 🇳🇴 553 185 11ms 14 Oct 2024 850th gigaprofisi 🇺🇸 553 185 11ms 13 Nov 2025 852nd Ripick 553 210 391ms 1 Jun 2025 853rd RussellEmerine 553 238 119ms 10 Apr 2020 854th jaredcrystal 🇺🇸 552 149 37ms 14 Dec 2020 854th jstanley0 552 149 37ms 15 Dec 2020 856th Tess2662 552 150 1ms 10 Sep 2022 857th SuperFola 552 272 32ms 7 days ago 858th LogicalJoe 551 195 10ms 11 Oct 2022 858th Stockoh 🇫🇷 551 195 11ms 26 Apr 2024 858th JTHCode 551 195 10ms 23 Oct 2025 861st Shanethegamer 🇺🇸 550 178 4ms 28 Apr 2022 861st dokutan 550 178 4ms 10 Apr 2025 863rd deancureton 550 186 10ms 30 Dec 2024 864th KSSBrawl 548 185 1ms 15 Dec 2020 864th billings7 🇬🇧 548 185 404ms 21 Nov 2021 866th geofft 548 196 10ms 11 Dec 2020 866th Fanrco 548 196 10ms 4 Sep 2023 866th RedzGoose 🇦🇺 548 196 10ms 25 Oct 2024 869th lacroixjonathan87 547 179 4ms 16 Sep 2020 870th maxpelic 🇺🇸 547 187 10ms 8 Jul 2022 871st Yewzir 🇧🇪 546 160 508ms 4 Feb 2024 872nd CheeseCake628 🇳🇴 546 197 10ms 3 Mar 2024 873rd robymus 545 151 34ms 18 Sep 2018 873rd DialFrost 🇸🇬 545 151 35ms 31 Dec 2022 875th Jonatan6 🇩🇰 545 186 2ms 3 Jul 2023 876th nnchutchikov 544 180 5ms 5 Nov 2024 877th scpchicken 🇵🇼 544 188 10ms 15 Jan 2022 878th omgardner 543 198 10ms 11 Aug 2019 878th martinnorling 🇸🇪 543 198 10ms 22 Jun 2022 880th janAkali 🇷🇺 543 214 382ms 15 Oct 2025 First Prev 801–880 of 1,501 Next Last
