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?
Cubes 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 721st roguh 🇬🇹 422 345 2ms 20 Oct 2024 722nd mousetail 🇳🇱 422 411 3ms 26 Jan 2024 723rd Domicnt 422 459 147ms 10 Jun 2020 724th za3k 420 225 11ms 15 Oct 2022 724th celiendonze 🇨🇭 420 225 10ms 25 May 2023 724th jbjd 420 225 10ms 2 Mar 2024 724th tomh1012 420 225 10ms 21 Nov 2025 728th msbranicky 420 379 95ms 15 Aug 2023 729th qzdl 420 381 7ms 20 Sep 2020 730th sambirnbaum1 418 226 10ms 14 Oct 2019 730th mothcolada 🇺🇸 418 226 10ms 12 Apr 2021 730th aalec 418 226 10ms 25 Apr 2024 730th jtaxen 418 226 10ms 10 May 2024 734th KatieLG 🇬🇧 418 339 86ms 17 May 2025 735th olligobber 🇦🇺 418 367 119ms 18 May 2020 736th hrrs01 416 199 35ms 22 Sep 2020 736th mikiymk 416 199 36ms 21 Sep 2023 738th amishtal 416 227 10ms 4 Dec 2019 738th dzshn 416 227 10ms 15 Aug 2022 740th ollyspooner 416 285 10ms 25 Nov 2022 741st bac0id 416 417 3ms 26 Sep 2023 742nd AkashTandon167 415 228 10ms 8 Dec 2020 742nd vezzick 415 228 10ms 6 Mar 2021 742nd trist224 🇫🇷 415 228 14ms 18 Oct 2022 742nd thehylian 415 228 11ms 30 Dec 2022 742nd KrausRaus 🇺🇸 415 228 10ms 19 Oct 2023 747th null-tangent 415 286 12ms 4 Aug 2022 748th jaredcrystal 🇺🇸 414 200 35ms 14 Dec 2020 749th mamsterla 413 229 10ms 29 Jun 2020 749th face0xff 413 229 10ms 26 Oct 2021 749th nullie 413 229 10ms 7 Jun 2022 749th mathisfun271 413 229 10ms 19 Dec 2023 753rd minipif 413 480 478ms 4 Jan 2026 754th veiko 410 289 10ms 24 Jun 2022 754th MadScience137 410 289 10ms 16 Oct 2022 756th weeble 410 365 6ms 24 Dec 2024 757th haydenridd 409 231 10ms 22 Oct 2020 757th lemogne 409 231 10ms 2 Jun 2022 757th sjrct 409 231 9ms 2 Jun 2023 760th ndren 409 243 489ms 16 Feb 2024 761st pandapawskat 409 290 10ms 3 Dec 2020 762nd michelebastione 🇮🇹 408 232 10ms 19 Oct 2019 762nd msbranicky 408 232 10ms 5 Aug 2023 762nd Florian-Mt 408 232 10ms 12 Jul 2024 762nd moustave 408 232 10ms 2 Dec 2024 762nd nemoyatpeace 408 232 10ms 12 Jan 2026 767th nephila-nacrea 🇬🇧 408 272 3ms 23 May 2019 768th muztanger 408 421 379ms 21 Nov 2021 769th rucin93 🇵🇱 408 654 1,415ms 12 Mar 2025 770th alphafalfa 407 346 2ms 26 Nov 2024 771st TimHuisman1703 406 233 11ms 7 Jan 2022 771st Ailko 🇧🇪 406 233 17ms 12 May 2022 771st shelerr 406 233 14ms 15 Jun 2023 771st quimey 406 233 11ms 5 Jul 2023 771st JuanchoGithub 406 233 9ms 27 Mar 2024 776th magarifullin 405 417 6ms 4 Oct 2024 777th Natanaelel 🇸🇪 404 156 42ms 26 Jul 2022 778th Altrul 404 234 10ms 17 Dec 2020 778th jan-Simiman 404 234 12ms 16 Oct 2024 780th Shanethegamer 🇺🇸 404 396 7ms 30 Aug 2024 781st 77Tigers 402 235 9ms 27 Feb 2021 781st CodyMiner 402 235 13ms 17 Nov 2021 781st P-Quentin 🇫🇷 402 235 11ms 8 Aug 2022 781st CarsonChr 🇺🇸 402 235 9ms 18 Sep 2022 781st jm600 402 235 10ms 27 Nov 2022 786th katehuds 401 236 9ms 22 Oct 2020 786th myleopard 401 236 10ms 13 Oct 2021 786th Bonjour27891 🇻🇳 401 236 10ms 13 Mar 2022 786th GeneralTwi 401 236 10ms 12 Apr 2022 786th Wildst 401 236 11ms 2 Nov 2022 786th TaserTheFox 🇺🇸 401 236 10ms 2 May 2023 792nd TheCod-r 🇦🇶 399 237 10ms 27 Sep 2022 793rd KatieLG 🇬🇧 399 752 2ms 22 Aug 2024 794th samthidny 398 298 10ms 5 Apr 2022 795th bbakersmith 397 238 11ms 28 Jun 2022 795th mossprescott 397 238 10ms 18 Jan 2023 795th jatloe 397 238 13ms 26 Aug 2024 798th aksyristos 397 479 1,456ms 23 Jan 2023 799th madex 🇩🇪 396 209 37ms 29 Jun 2025 800th timkaiser 396 239 10ms 18 Apr 2019 First Prev 721–800 of 1,697 Next Last
