The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 24 hours. Why not try and solve them ahead of time?
Intersection 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 795th neihousaigaai 590 130 11ms 17 Mar 2021 795th Indivicivet 590 130 10ms 30 Mar 2021 795th cbondurant 590 130 11ms 7 May 2021 795th Sp3000 🇦🇺 590 130 10ms 14 May 2021 795th zbreit 🇺🇸 590 130 10ms 30 May 2021 795th Kloppermand 🇩🇰 590 130 9ms 19 Oct 2021 795th souta-1326 590 130 10ms 7 Feb 2022 795th feherd 590 130 10ms 4 Mar 2022 795th OllieBoyne 🇬🇧 590 130 10ms 5 Mar 2022 795th TobyBoyne 🇬🇧 590 130 10ms 14 Apr 2022 795th iihiro 🇯🇵 590 130 10ms 2 Aug 2022 795th betaveros 590 130 20ms 10 Aug 2022 795th g-katsuki 590 130 10ms 14 Sep 2022 795th celiendonze 🇨🇭 590 130 12ms 25 Apr 2023 795th ssbhatt4321 590 130 10ms 11 Jun 2023 795th janbehrens 🇩🇪 590 130 9ms 17 Jun 2023 795th AlexanderFair 590 130 10ms 2 Aug 2023 795th bzijlema 🇳🇱 590 130 10ms 14 Nov 2023 795th m42km 590 130 10ms 23 Nov 2023 795th mathisfun271 590 130 9ms 25 Dec 2023 795th firegene 🇮🇪 590 130 11ms 14 Jan 2024 795th Masttest 590 130 12ms 15 Feb 2024 795th thienudomsrirungruang 590 130 10ms 4 Apr 2024 795th ahmetdemirag 🇨🇾 590 130 11ms 4 Jun 2024 795th Mikey-Beep 🇬🇧 590 130 11ms 5 Sep 2024 795th davecame 590 130 11ms 25 Sep 2024 795th moustave 590 130 11ms 5 Dec 2024 795th eranlambooij 590 130 11ms 18 Apr 2025 795th klixel 🇨🇦 590 130 11ms 11 Jul 2025 795th redweasel 590 130 12ms 24 Jul 2025 795th emneo-dev 590 130 11ms 29 Nov 2025 795th GodlyProgrammer1 590 130 10ms 2 Dec 2025 795th Matter1024 🇮🇳 590 130 10ms 16 Feb 2026 795th Andriamanitra 🇫🇮 590 130 11ms 16 Feb 2026 795th LostSyntax21 🇬🇧 590 130 10ms 21 Feb 2026 795th RZ781 590 130 10ms 23 Feb 2026 837th c-cpp-a 590 259 1,449ms 26 Jul 2025 838th calinous 🇷🇴 589 227 2ms 3 Mar 2023 839th raphaelimahorn 589 247 377ms 21 Nov 2021 840th snoozingnewt 🇨🇦 588 93 38ms 14 Oct 2025 840th emgordon154 588 93 41ms 2 Mar 2026 842nd Bubbler-4 588 134 70ms 13 Sep 2023 843rd Shanethegamer 🇺🇸 586 144 84ms 30 Mar 2025 844th bbonenfant 585 131 11ms 21 Nov 2020 844th geofft 585 131 10ms 10 Dec 2020 844th MichaelMBradley 🇨🇦 585 131 10ms 19 Jun 2022 844th b10011 🇫🇮 585 131 11ms 16 Jan 2023 844th starfihs 585 131 10ms 23 Feb 2025 844th dirckvdende 585 131 10ms 11 Jul 2025 844th InigoK 🇺🇸 585 131 11ms 10 Sep 2025 851st codewrite 🇬🇧 585 249 434ms 2 Jan 2026 852nd Yewzir 🇧🇪 584 218 3ms 19 Oct 2023 853rd snoozingnewt 🇨🇦 583 194 399ms 5 Oct 2025 854th cure-honey 🇯🇵 583 207 40ms 9 Oct 2020 855th msbranicky 583 288 249ms 6 Oct 2023 856th henrytranter 581 132 11ms 9 Oct 2020 856th andre-lameirinhas 🇵🇹 581 132 10ms 11 Oct 2020 856th adoxography 581 132 10ms 23 Jan 2021 856th UBKorkut 581 132 10ms 12 Mar 2021 856th buffalocat 581 132 11ms 3 May 2021 856th pascscha 581 132 10ms 13 May 2021 856th knutae 🇳🇴 581 132 10ms 29 Jun 2021 856th estomagordo 🇳🇱 581 132 10ms 7 Dec 2021 856th amollberg 🇸🇪 581 132 10ms 29 Jan 2022 856th CedricGebistorf 581 132 11ms 6 Mar 2022 856th cooljoseph1 581 132 11ms 6 May 2022 856th abba23 581 132 10ms 27 May 2022 856th nullie 581 132 10ms 8 Jun 2022 856th georgehulme 581 132 10ms 12 Oct 2022 856th astonm 581 132 11ms 15 Nov 2022 856th RDShah 581 132 10ms 23 Nov 2022 856th myleopard 581 132 10ms 23 Dec 2022 856th dranjohn 581 132 10ms 11 Sep 2023 856th dragonshadows07 581 132 10ms 19 Jan 2024 856th AtengChen 581 132 10ms 17 Aug 2024 856th maxgodfrey2004 🇨🇦 581 132 11ms 5 Jan 2025 856th croc54 581 132 11ms 8 Jan 2025 856th CLOStrophobic 🇮🇹 581 132 10ms 8 Feb 2025 856th connor-grady 581 132 11ms 7 May 2025 856th jacekwladzinski 581 132 10ms 5 Oct 2025 First Prev 801–880 of 1,360 Next Last
