The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 23 hours. Why not try and solve them ahead of time?
Tutorial 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 859th zacjl 0 65 11ms 1 Dec 2024 859th zacjl 0 65 7ms 1 Dec 2024 859th sisyphus-ppcg 🇦🇺 0 65 12ms 2 Dec 2024 859th JunkIce 0 65 12ms 3 Dec 2024 859th SirBogman 🇺🇸 0 65 11ms 3 Dec 2024 859th xsot 🇸🇬 0 65 11ms 4 Dec 2024 859th ndren 0 65 11ms 5 Dec 2024 859th CornerMercury 🇬🇧 0 65 10ms 5 Dec 2024 859th lukegustafson 🇺🇸 0 65 10ms 7 Dec 2024 859th Europe2048 0 65 13ms 7 Dec 2024 859th neel11235813 0 65 11ms 9 Dec 2024 859th Seek64 🇩🇪 0 65 11ms 10 Dec 2024 859th MeWhenI 🇻🇦 0 65 2ms 11 Dec 2024 859th antimon2 🇯🇵 0 65 11ms 16 Dec 2024 859th error256 0 65 6ms 16 Dec 2024 859th edsrzf 🇳🇿 0 65 7ms 18 Dec 2024 859th bizy-coder 0 65 11ms 28 Dec 2024 859th Bulmenisaurus 0 65 13ms 1 Jan 2025 859th m-tkach 🇺🇦 0 65 157ms 3 Jan 2025 859th b-illy 🇬🇧 0 65 11ms 4 Jan 2025 859th emgordon154 0 65 7ms 11 Jan 2025 859th CLOStrophobic 🇮🇹 0 65 13ms 22 Jan 2025 859th prplz 🇦🇺 0 65 11ms 23 Jan 2025 859th kg583 🇺🇸 0 65 6ms 23 Jan 2025 859th CLOStrophobic 🇮🇹 0 65 7ms 23 Jan 2025 859th sean-niemann 🇺🇸 0 65 11ms 23 Jan 2025 859th mathisfun271 0 65 11ms 25 Jan 2025 859th aliberro39109 0 65 11ms 25 Jan 2025 859th Natanaelel 🇸🇪 0 65 11ms 26 Jan 2025 859th Shanethegamer 🇺🇸 0 65 11ms 30 Jan 2025 859th firegene 🇮🇪 0 65 10ms 30 Jan 2025 859th Lydxn 🇨🇦 0 65 10ms 31 Jan 2025 859th commandz0 🇺🇸 0 65 12ms 2 Feb 2025 859th GolfingSuccess 🇬🇷 0 65 6ms 3 Feb 2025 859th bricknellj 0 65 11ms 5 Feb 2025 859th qpwoeirut 0 65 2,630ms 7 Feb 2025 859th xyangst 0 65 13ms 14 Feb 2025 859th emgordon154 0 65 48ms 17 Feb 2025 859th GolfingSuccess 🇬🇷 0 65 166ms 6 Mar 2025 859th Jacob385 0 65 2ms 19 Mar 2025 859th 4atj 0 65 12ms 10 Apr 2025 859th orthoplex 🇨🇽 0 65 11ms 16 Apr 2025 859th MeWhenI 🇻🇦 0 65 12ms 17 Apr 2025 859th Mukundan314 0 65 12ms 17 Apr 2025 859th MeWhenI 🇻🇦 0 65 6ms 17 Apr 2025 859th DialFrost 🇸🇬 0 65 7ms 17 Apr 2025 859th DialFrost 🇸🇬 0 65 12ms 17 Apr 2025 859th error256 0 65 12ms 17 Apr 2025 859th rucin93 🇵🇱 0 65 10ms 17 Apr 2025 859th edsrzf 🇳🇿 0 65 162ms 17 Apr 2025 859th edsrzf 🇳🇿 0 65 3ms 18 Apr 2025 859th HumanoidCPU 0 65 12ms 18 Apr 2025 859th HumanoidCPU 0 65 8ms 18 Apr 2025 859th HumanoidCPU 0 65 166ms 18 Apr 2025 859th DialFrost 🇸🇬 0 65 151ms 18 Apr 2025 859th BlankSpruce 0 65 12ms 18 Apr 2025 859th Shanethegamer 🇺🇸 0 65 147ms 18 Apr 2025 859th CaedenHarper 🇨🇦 0 65 6ms 18 Apr 2025 859th CaedenHarper 🇨🇦 0 65 167ms 18 Apr 2025 859th FEZfan 🇦🇺 0 65 13ms 19 Apr 2025 859th undefinedRyan 0 65 11ms 19 Apr 2025 859th DialFrost 🇸🇬 0 65 3ms 20 Apr 2025 859th plcc0 0 65 10ms 21 Apr 2025 859th dokutan 0 65 7ms 28 Apr 2025 859th RYSF13 🇨🇳 0 65 2ms 13 May 2025 859th Shanethegamer 🇺🇸 0 65 3ms 13 May 2025 859th robin-scragg 0 65 12ms 19 May 2025 859th ryyyn 🇺🇸 0 65 11ms 21 May 2025 859th Kyogre-Primal 🇺🇦 0 65 11ms 21 May 2025 859th albanian-laundromat 0 65 12ms 4 Jun 2025 859th fuzzylojik-golf 🇺🇸 0 65 11ms 5 Jun 2025 859th codingisgreatbutiamnot 0 65 12ms 7 Jun 2025 859th SoliGhost 0 65 11ms 8 Jun 2025 859th cros107 🇦🇺 0 65 12ms 14 Jun 2025 859th long279595192 0 65 13ms 20 Jun 2025 859th jiji7879 0 65 12ms 20 Jun 2025 859th alemelis 0 65 10ms 20 Jun 2025 859th elana-teal 0 65 11ms 20 Jun 2025 859th zijinoier 0 65 12ms 25 Jun 2025 859th dirckvdende 0 65 11ms 30 Jun 2025 First Prev 881–960 of 3,458 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