The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 42 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 721st 20kdc 602 198 2ms 13 Oct 2021 722nd Shanethegamer 🇺🇸 602 239 40ms 12 Sep 2024 723rd edsrzf 🇳🇿 601 163 5ms 22 Sep 2024 724th jared-hughes 600 141 3ms 17 Jul 2022 725th Alex-x90 🇺🇸 600 169 1ms 20 Dec 2022 726th TheAristos 600 179 10ms 21 Oct 2019 726th TaserTheFox 🇺🇸 600 179 9ms 15 May 2023 726th jatloe 600 179 10ms 23 Oct 2024 726th JOrE20 600 179 9ms 2 Feb 2026 730th jwhear 🇺🇸 600 263 1,781ms 30 Sep 2024 731st bobesa 598 171 12ms 13 Oct 2017 731st JRaspass 🇬🇧 598 171 10ms 7 Jul 2020 731st raphaelimahorn 598 171 9ms 26 Oct 2022 734th yzhs 🇩🇪 598 220 114ms 23 Jun 2022 735th msbranicky 597 165 1ms 11 Oct 2023 736th albanian-laundromat 597 192 138ms 11 Jul 2025 737th msbranicky 597 234 2ms 11 Aug 2023 738th janbehrens 🇩🇪 595 122 3ms 14 Apr 2021 739th R4z0rX 595 172 10ms 27 Aug 2024 740th ikskuh 595 265 1,909ms 26 Sep 2025 741st adesanjo 594 181 9ms 24 Oct 2019 741st mathisfun271 594 181 9ms 27 Oct 2021 741st NicoAdams 594 181 10ms 21 Dec 2021 741st qpwoeirut 594 181 10ms 1 Feb 2026 745th msbranicky 594 238 305ms 5 Sep 2023 746th FlyingPenguin223 593 201 1ms 22 Oct 2024 747th dokutan 593 206 6ms 19 May 2024 748th Shanethegamer 🇺🇸 592 229 368ms 24 Sep 2025 749th MarcMush 🇫🇷 591 131 1,016ms 11 Jul 2021 750th hacker112 🇸🇪 591 173 10ms 23 Jun 2024 750th XenThe 🇬🇧 591 173 11ms 12 Sep 2025 752nd guliyevemil1 🇦🇿 590 182 9ms 19 Apr 2020 752nd inverseLorentz 🇦🇺 590 182 9ms 12 May 2023 752nd EnviloN 🇨🇿 590 182 10ms 21 Oct 2024 752nd 5quiwyrm 590 182 10ms 2 Sep 2025 756th NickTheEASDude 🇺🇸 590 202 1ms 21 Aug 2024 757th djeedjay 🇳🇱 589 172 2ms 8 Oct 2020 758th bluebear94 587 121 136ms 4 Feb 2018 759th Shanethegamer 🇺🇸 587 132 291ms 28 Apr 2022 760th face0xff 587 183 9ms 18 Oct 2021 760th guilhem-roy 🇫🇷 587 183 10ms 24 Feb 2022 760th shibacho 🇯🇵 587 183 11ms 18 Mar 2022 760th jmerle 🇳🇱 587 183 10ms 15 Jun 2023 760th andrewjc2000 587 183 10ms 14 Aug 2025 765th mhasch 586 124 2ms 11 Oct 2017 766th targrik 586 167 5ms 17 Jan 2025 767th Yewzir 🇧🇪 586 209 431ms 9 Feb 2024 768th fynnkroeger 584 184 9ms 30 Apr 2022 768th KatieLG 🇬🇧 584 184 10ms 27 Jul 2022 768th fkantelberg 584 184 9ms 8 Aug 2023 771st dokutan 583 170 143ms 7 Aug 2024 772nd roavin 582 174 1ms 9 May 2022 772nd roguh 🇬🇹 582 174 1ms 22 Jan 2024 774th icy-lava 582 205 1ms 11 Aug 2023 775th MeWhenI 🇻🇦 581 125 3ms 16 Apr 2023 776th LukeBridges 🇬🇧 581 176 10ms 2 Nov 2022 776th Salutations45 581 176 10ms 12 Nov 2024 778th 77Tigers 581 185 9ms 25 Feb 2021 778th zach333 581 185 10ms 18 Jul 2024 778th Pyroan 581 185 9ms 22 Feb 2025 781st hiddicop 🇸🇪 580 142 35ms 30 Jan 2021 782nd Yewzir 🇧🇪 580 170 1ms 16 Oct 2023 783rd tdkkdt 🇷🇺 579 175 395ms 21 Nov 2021 784th ShiraJoseph 🇺🇸 578 177 11ms 19 Jun 2023 785th vezzick 578 186 9ms 8 Mar 2021 785th hiichbindermax 578 186 9ms 4 Sep 2024 787th 1231234md5 🇨🇳 576 176 2ms 8 Jan 2024 788th lmeuser 575 187 9ms 2 Dec 2017 788th ay2718 575 187 17ms 17 Jul 2019 788th NanduBC 575 187 9ms 24 Mar 2021 788th eshilo-draper 575 187 9ms 27 Sep 2022 788th Ythaenagor 575 187 9ms 5 Aug 2024 788th jameswmccarty 575 187 10ms 31 Dec 2024 794th boxjelly 574 229 117ms 7 Jan 2021 795th Shanethegamer 🇺🇸 573 162 4ms 26 Apr 2023 796th aksyristos 573 177 2ms 29 Dec 2022 796th mnurzia 573 177 1ms 13 Oct 2023 798th dymowski 572 188 10ms 10 Sep 2019 798th PyryL 🇫🇮 572 188 9ms 22 Aug 2024 800th Michal-Miky-Jankovsky 571 179 10ms 19 Nov 2021 First Prev 721–800 of 1,502 Next Last