The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 7 days. Why not try and solve them ahead of time?
All holes in Go 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 Holes Points Chars Submitted 321st adriweb 🇫🇷 3 940 1,584 17 Aug 2023 322nd nico-bachner 2 935 2,637 29 Dec 2020 323rd furokku 1 933 120 12 Feb 2021 324th CedricGebistorf 1 929 84 13 Mar 2022 324th TheRealOhead 🇺🇸 1 929 84 21 Mar 2022 326th kinoute 🇫🇷 1 929 112 11 Sep 2021 327th vadimzhukck 1 918 85 26 Apr 2020 327th PhysicDev 🇫🇷 1 918 85 9 Jun 2021 327th raphaelimahorn 1 918 85 3 Aug 2021 327th georgehorrell 1 918 85 5 Aug 2021 327th MichaelMBradley 🇨🇦 1 918 85 19 Jul 2022 327th epic-programmer-guy 1 918 85 26 Dec 2023 333rd antimon2 🇯🇵 1 915 118 26 Jun 2020 334th christensendaniel 3 914 3,191 14 May 2024 335th rsujeevan 1 904 115 5 May 2025 336th nomennescio 1 903 124 9 Dec 2024 337th MichalMarsalek 🇨🇿 1 897 87 29 Nov 2021 337th nyoshe 1 897 87 10 Oct 2023 339th HerLovelyTentacles 1 897 116 22 Nov 2021 340th TaserTheFox 🇺🇸 4 889 7,141 1 Jun 2023 341st HumanEquivalentUnit 2 887 2,462 25 Oct 2023 342nd Just4FunCoder 1 886 88 26 Aug 2024 343rd apreg 1 880 125 26 Apr 2023 344th dcowgill 1 878 123 19 Apr 2020 345th ashtraypettingzoo 🇺🇸 1 867 90 16 Feb 2023 345th StupidHobbit 1 867 90 26 Nov 2025 347th idavidka 🇭🇺 1 866 127 25 Apr 2023 348th LHLaurini 🇧🇷 2 864 827 14 Jul 2024 349th martinnorling 🇸🇪 1 857 91 15 Feb 2022 349th jacekwladzinski 1 857 91 2 Oct 2025 351st peeveen 🇬🇧 1 857 238 10 Oct 2023 352nd dscholtz-lab49 1 853 129 25 Apr 2023 353rd 5cw 🇺🇸 2 851 493 22 Apr 2023 354th oceko 1 848 92 26 Nov 2022 354th charliegaming 1 848 92 3 Oct 2023 356th btjones0 1 844 128 28 Dec 2020 357th Unknownuserfrommars 1 836 134 5 Aug 2025 358th sech1p 🇵🇱 1 830 94 26 Jun 2021 359th dteague3989 1 828 99 25 May 2023 359th StronkCheese 🇺🇸 1 828 99 20 Feb 2024 361st noriah 1 824 131 21 Jan 2024 362nd Loag 1 820 100 7 Sep 2024 363rd kicco 2 820 454 20 Apr 2020 364th hyvyys 1 819 105 24 Sep 2020 365th vezzick 1 818 132 8 Mar 2021 366th odsteel 1 817 126 30 Mar 2023 367th dylanarmstrong 1 812 133 16 Dec 2023 367th alemelis 1 812 133 24 Sep 2024 367th slavakrampetz 🇷🇺 1 812 133 11 Oct 2024 370th bendapootie 1 808 120 18 Jul 2020 371st Secozzi 1 806 134 4 Nov 2020 371st ArmaanAS 1 806 134 22 Mar 2021 371st AgentIvan 🇺🇦 1 806 134 25 Mar 2021 371st peculiarination 1 806 134 3 May 2021 371st c0d3-4-F00d 🇩🇪 1 806 134 19 May 2021 371st silvncr 1 806 134 15 Jun 2021 371st StHagel 1 806 134 25 Aug 2023 371st lyphyser 1 806 134 9 Oct 2023 371st LvLError 1 806 134 26 May 2025 380th geekaholic 2 805 606 5 Aug 2022 381st guywithnose 1 804 97 12 May 2023 381st azure-blondon 1 804 97 7 May 2024 383rd nwunderly 1 800 135 29 Oct 2020 383rd LibertusDio 1 800 135 7 Apr 2022 385th no1msd 1 794 136 12 May 2023 385th MaliPatuljak 1 794 136 16 May 2023 387th WindbeutelBaron 1 792 130 18 Aug 2022 388th eiburns 1 788 99 13 Jan 2022 389th mats852 1 788 137 29 Sep 2021 390th dallbee 1 783 138 16 Apr 2020 390th Inverted 1 783 138 4 Nov 2020 392nd godraadam 1 782 110 26 Nov 2020 393rd MikeyIO 2 782 474 15 Apr 2020 394th dhilman 1 780 118 16 Sep 2022 395th yhm138 4 779 3,286 18 Feb 2025 396th kellengreen 1 777 139 8 Jun 2021 396th blackheart01 1 777 139 17 Aug 2022 398th jacknpainter 1 773 119 23 Jun 2023 399th phpboyscout 1 772 101 26 May 2021 400th functionsnstuff 1 771 140 28 Apr 2020 First Prev 321–400 of 608 Next Last