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?
Tutorial in JavaScript 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 1st Shanethegamer 🇺🇸 0 61 12ms 20 Nov 2024 1st stefangimmillaro 0 61 14ms 21 Nov 2024 1st error256 0 61 14ms 21 Nov 2024 1st ovs-code 🇩🇪 0 61 15ms 25 Nov 2024 1st GolfingSuccess 🇬🇷 0 61 12ms 25 Nov 2024 1st sean-niemann 🇺🇸 0 61 15ms 26 Nov 2024 1st duckyluuk 🇳🇱 0 61 15ms 26 Nov 2024 1st DialFrost 🇸🇬 0 61 13ms 26 Nov 2024 1st rucin93 🇵🇱 0 61 14ms 26 Nov 2024 1st emgordon154 0 61 13ms 28 Nov 2024 1st lukegustafson 🇺🇸 0 61 13ms 7 Dec 2024 1st MeWhenI 🇻🇦 0 61 14ms 11 Dec 2024 1st emplv 🇱🇻 0 61 13ms 11 Dec 2024 1st voytxt 🇨🇿 0 61 14ms 22 Dec 2024 1st Salutations45 0 61 13ms 29 Dec 2024 1st CLOStrophobic 🇮🇹 0 61 13ms 22 Jan 2025 1st m-tkach 🇺🇦 0 61 14ms 30 Jan 2025 1st Natanaelel 🇸🇪 0 61 13ms 2 Feb 2025 1st CaedenHarper 🇨🇦 0 61 12ms 3 Feb 2025 1st BalaM314 0 61 16ms 4 Feb 2025 1st targrik 0 61 12ms 8 Feb 2025 1st attila8192 0 61 14ms 1 Mar 2025 1st janlelis 0 61 15ms 31 Mar 2025 1st b-illy 🇬🇧 0 61 18ms 16 Apr 2025 1st janbehrens 🇩🇪 0 61 14ms 17 Apr 2025 1st pardouin 🇫🇷 0 61 19ms 17 Apr 2025 1st edsrzf 🇳🇿 0 61 13ms 17 Apr 2025 1st HumanoidCPU 0 61 12ms 18 Apr 2025 1st AlephSquirrel 0 61 13ms 20 Apr 2025 1st Sam-Vrgl 0 61 16ms 13 May 2025 1st c-py 0 61 13ms 14 May 2025 1st Andrey-Plotnikov 0 61 13ms 19 Jun 2025 1st a6166231 🇨🇳 0 61 13ms 20 Jun 2025 1st BREMAUCY 🇫🇷 0 61 12ms 1 Jul 2025 1st RYSF13 🇨🇳 0 61 13ms 5 Jul 2025 1st p01 0 61 13ms 28 Jul 2025 1st KrausRaus 🇺🇸 0 61 14ms 29 Jul 2025 1st dmrichwa 🇺🇸 0 61 15ms 29 Jul 2025 1st gitchaell 🇧🇴 0 61 15ms 6 Aug 2025 1st lukepolak 0 61 15ms 7 Aug 2025 1st adrianbgo 0 61 14ms 7 Aug 2025 1st helbling 🇨🇭 0 61 14ms 28 Aug 2025 1st snoozingnewt 🇨🇦 0 61 14ms 15 Sep 2025 1st larsendaniel 0 61 16ms 7 Nov 2025 1st JOrE20 0 61 14ms 18 Nov 2025 1st GodlyProgrammer1 0 61 14ms 22 Nov 2025 1st egertaia 0 61 13ms 9 Jan 2026 1st r58iiz 0 61 15ms 15 Jan 2026 1st ragonscreen 0 61 14ms 16 Jan 2026 1st FoxInTheClouds 0 61 14ms 5 Feb 2026 1st Ultra814 0 61 13ms 19 Feb 2026 1st weliveinhell 🇭🇹 0 61 14ms 13 days ago 1st marcuswilcour 0 61 12ms 16 hours ago 54th Nemikolh 🇫🇷 0 63 16ms 12 Feb 2025 54th penous 0 63 16ms 2 Aug 2025 54th YellowDudeIsMe 0 63 14ms 14 Aug 2025 57th Liniarc 0 64 14ms 26 Nov 2024 57th amazingalek 🇳🇴 0 64 11ms 16 Dec 2025 59th xyangst 0 65 13ms 14 Feb 2025 59th long279595192 0 65 13ms 20 Jun 2025 59th Jak-Ch-ll 0 65 12ms 6 Jul 2025 62nd Ealeex 0 66 14ms 10 Jun 2025 62nd cjdyer 0 66 15ms 20 days ago 64th IcedDog 0 67 14ms 14 Feb 2025 64th n3xta 0 67 13ms 14 Feb 2025 64th smclaughlin-cf 0 67 12ms 19 Feb 2025 64th 1nspir3d 0 67 16ms 6 Apr 2025 64th thadeucity 0 67 13ms 26 May 2025 64th alexsave 0 67 16ms 16 Sep 2025 64th mirojones 0 67 14ms 30 Nov 2025 64th matricronia 0 67 17ms 1 Feb 2026 64th raphaelimahorn 0 67 17ms 14 days ago 73rd 823126 0 68 13ms 20 Nov 2024 73rd cloudyshoe 0 68 13ms 15 May 2025 73rd jake6192 0 68 14ms 30 May 2025 73rd 4very 0 68 13ms 7 Jun 2025 73rd XenThe 🇬🇧 0 68 15ms 15 Jul 2025 73rd amine4567 0 68 13ms 2 Aug 2025 73rd Cazka 0 68 12ms 22 Nov 2025 73rd MyltsinVV 0 68 16ms 26 Nov 2025 1–80 of 130 Next Last
