The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 28 hours. 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 641st super-tux 625 172 9ms 12 Aug 2021 641st pricemat 625 172 9ms 12 Oct 2023 641st apetersen-real 625 172 10ms 12 Oct 2023 641st Cynopolis 625 172 10ms 12 Oct 2023 641st dokutan 625 172 10ms 21 Jun 2024 641st CutSandstone 625 172 9ms 8 Jul 2024 647th Salutations45 625 190 1ms 2 Jan 2025 648th user189032 624 164 10ms 29 May 2019 649th janlelis 623 132 35ms 8 Jan 2021 650th Stenzel 622 163 2ms 22 Mar 2021 651st MeWhenI 🇻🇦 622 189 3ms 2 Oct 2022 652nd ludwig-n 621 173 10ms 7 Apr 2021 652nd jacklynnepenick 621 173 10ms 15 Aug 2021 652nd rowboat1 621 173 9ms 14 Jun 2022 652nd za3k 621 173 10ms 9 Oct 2022 652nd moustave 621 173 10ms 24 Oct 2024 657th janbehrens 🇩🇪 620 129 239ms 3 Dec 2023 658th iczelia 🇩🇪 620 165 10ms 17 Oct 2025 659th lynn 620 201 14ms 17 Nov 2021 660th iczelia 🇩🇪 619 192 1ms 19 Oct 2025 661st jacobly0 🇺🇸 619 255 1,745ms 22 Apr 2024 661st MeWhenI 🇻🇦 619 255 1,778ms 7 Nov 2025 663rd GolfingSuccess 🇬🇷 618 101 54ms 18 Mar 2023 664th stefangimmillaro 618 134 1ms 26 Oct 2025 665th zdzc 618 174 9ms 31 Mar 2018 665th tnecio 618 174 10ms 21 Apr 2021 665th EnTerr 618 174 10ms 26 Aug 2024 668th Shanethegamer 🇺🇸 618 183 83ms 29 May 2022 669th aksyristos 618 198 464ms 28 Oct 2024 670th daisy-lau 616 166 10ms 16 Jun 2020 670th sebipopa 🇷🇴 616 166 11ms 12 May 2023 672nd Shanethegamer 🇺🇸 615 194 1ms 28 Apr 2022 673rd 1231234md5 🇨🇳 615 199 446ms 8 Jan 2024 674th Yewzir 🇧🇪 615 227 2ms 5 Jul 2023 675th dokutan 614 135 2ms 2 Mar 2024 676th StefanHabel 🇨🇦 614 175 10ms 25 Mar 2023 677th Shanethegamer 🇺🇸 614 230 296ms 1 Apr 2022 678th janbehrens 🇩🇪 613 138 3ms 29 May 2021 679th jkelly467 613 165 2,749ms 30 Dec 2025 679th Chinay-Domitrix 🇺🇸 613 165 2,675ms 2 Mar 2026 681st neihousaigaai 612 167 9ms 13 May 2021 682nd yzhs 🇩🇪 611 134 1,208ms 3 Aug 2021 683rd cellobix 611 176 10ms 15 Aug 2019 683rd petar-donchev 611 176 10ms 28 Aug 2019 683rd Troon 611 176 10ms 8 Nov 2022 683rd fgrosshans 🇫🇷 611 176 9ms 6 May 2023 683rd Openstreetmapler 611 176 11ms 5 May 2025 683rd FoxInTheClouds 611 176 10ms 20 Jan 2026 689th scpchicken 🇵🇼 610 135 35ms 7 Mar 2022 690th Decrare 610 166 409ms 7 Sep 2025 691st Laksen 🇩🇰 610 227 25ms 8 Jul 2021 692nd akshatj27 🇦🇶 609 168 12ms 28 Dec 2021 692nd voytxt 🇨🇿 609 168 9ms 26 Jan 2025 694th labster 608 161 5ms 11 Mar 2018 695th Shanethegamer 🇺🇸 607 144 509ms 18 Jan 2024 696th elldur 607 177 9ms 17 Mar 2019 696th knutae 🇳🇴 607 177 9ms 20 Jul 2019 696th neihousaigaai 607 177 9ms 17 Apr 2021 696th rschwa6308 🇺🇸 607 177 9ms 18 Aug 2021 696th starfihs 607 177 10ms 21 Jul 2024 696th te-chnical 607 177 10ms 10 Feb 2026 702nd MeWhenI 🇻🇦 606 132 266ms 28 Jan 2023 702nd nullshallot 606 132 255ms 9 Jan 2025 704th frankgraziano 606 173 6ms 6 Feb 2026 705th mossprescott 606 217 120ms 10 Aug 2018 706th jerrandolph 606 233 262ms 18 Apr 2020 707th retrohun 605 140 9ms 29 Oct 2019 708th Mikaeel66 605 169 10ms 11 Nov 2019 708th pandapawskat 605 169 9ms 30 Sep 2021 708th HenryTy83 605 169 9ms 4 Dec 2022 711th adamnielson42 🇺🇸 604 155 2ms 11 Sep 2023 712th ionutm82 604 178 9ms 14 May 2019 712th CedricGebistorf 604 178 9ms 27 Feb 2022 712th ndren 604 178 10ms 28 Sep 2023 715th Yewzir 🇧🇪 604 202 7ms 24 Dec 2023 716th ericlangedijk 🇸🇮 603 168 392ms 24 Feb 2022 716th Natanaelel 🇸🇪 603 168 2ms 5 Jul 2023 718th AlexDaniel 🇪🇪 602 118 113ms 14 Mar 2018 719th ehouais 602 170 10ms 10 Oct 2018 719th eranws 602 170 9ms 2 Sep 2022 First Prev 641–720 of 1,502 Next Last
