The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 6 days. Why not try and solve them ahead of time?
Prime Numbers in Python 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 708th suchir 615 65 10ms 5 Jun 2021 708th harrymwilkins 🇬🇧 615 65 17ms 20 Jul 2021 708th AIn0n 615 65 16ms 8 Aug 2021 708th BenBanerjeeRichards 615 65 10ms 21 Jan 2022 708th ms-tingliang 615 65 9ms 5 Aug 2022 708th Starwort 🇬🇧 615 65 10ms 11 Nov 2022 708th Anthony-Williams-06 615 65 10ms 29 Nov 2022 708th yourlefthandman 615 65 10ms 15 Aug 2023 708th fgrosshans 🇫🇷 615 65 13ms 15 Jul 2024 708th gallium-gonzollium 615 65 17ms 2 Nov 2024 708th AstroOrbis 615 65 17ms 12 Jul 2025 708th madeforlosers 615 65 16ms 11 Nov 2025 708th Googolplexo 🇷🇺 615 65 10ms 2 hours ago 734th lrustand 606 66 9ms 16 Jan 2018 734th Threadzless 606 66 11ms 29 Oct 2018 734th mightymercado 606 66 16ms 9 Nov 2018 734th SimonPeatman 606 66 9ms 3 Feb 2019 734th sawall 606 66 9ms 17 Aug 2019 734th GeryonDev 606 66 9ms 14 Oct 2020 734th xkacer 🇨🇿 606 66 9ms 27 Jan 2021 734th kirbyyourmom 🇬🇧 606 66 10ms 30 Jan 2021 734th Estuardicue 606 66 10ms 18 Feb 2021 734th mothcolada 🇺🇸 606 66 17ms 11 Mar 2021 734th enbyte 606 66 10ms 7 Jun 2021 734th Y0UR-U5ERNAME 606 66 10ms 3 Sep 2021 734th Cloakless 🇬🇧 606 66 16ms 22 Oct 2021 734th TomRStevens 606 66 10ms 10 Mar 2022 734th trag1c 🇵🇱 606 66 10ms 11 Apr 2022 734th Ailko 🇧🇪 606 66 9ms 6 May 2022 734th ohentis 606 66 15ms 12 May 2022 734th Vdubro 606 66 9ms 12 Jun 2022 734th osmith93 606 66 9ms 14 Jun 2022 734th inverseLorentz 🇦🇺 606 66 9ms 25 Jun 2022 734th dapexyz 606 66 10ms 29 Oct 2022 734th kenballus 606 66 9ms 26 Jan 2023 734th mathb0y512 606 66 16ms 10 Jan 2024 734th qwjhvbxi 606 66 9ms 7 Feb 2024 734th cykim8811 606 66 15ms 9 Jul 2024 734th sreyfe 606 66 10ms 1 Aug 2024 734th Schreipfelerer 606 66 9ms 11 Sep 2024 734th Alex-Huggett 🇬🇧 606 66 17ms 23 Oct 2024 734th sciencedjinn 606 66 10ms 8 Nov 2024 734th Sloimayyy 606 66 16ms 20 Nov 2024 734th Andrey135296 606 66 10ms 24 Nov 2024 734th PotatoSaladOverlord 606 66 10ms 47 hours ago 766th ionutm82 597 67 9ms 10 May 2019 766th sambirnbaum1 597 67 9ms 6 Sep 2019 766th mamsterla 597 67 10ms 18 Aug 2020 766th sandybeachum 597 67 10ms 16 Mar 2021 766th befoster 597 67 10ms 10 Apr 2021 766th sbr075 597 67 9ms 6 Dec 2021 766th nmgetahun 597 67 9ms 9 Dec 2022 766th goGuru 597 67 9ms 23 Dec 2022 766th DanielPeterssonAI 597 67 16ms 20 Mar 2023 766th epic-programmer-guy 597 67 10ms 1 Jan 2024 766th holmest14 597 67 10ms 6 Aug 2024 766th rollsroyce0 597 67 9ms 12 Sep 2024 766th hwelch-fle 597 67 10ms 7 Feb 2026 779th zbaklund 588 68 10ms 11 Apr 2018 779th danwley 588 68 10ms 5 Jan 2019 779th jotslo 🇬🇧 588 68 16ms 12 Jul 2019 779th durgasailakshmi 588 68 10ms 16 Jul 2019 779th GodEmperorCaterpie 588 68 9ms 31 Aug 2019 779th VictorFordham 588 68 10ms 8 Aug 2020 779th OwenElliottDev 588 68 9ms 20 Aug 2020 779th PiterAnnema 588 68 15ms 30 Aug 2020 779th Pena86 588 68 9ms 27 Feb 2021 779th awnion 588 68 10ms 16 May 2021 779th freerainboxbox 588 68 9ms 23 Jul 2021 779th dylannalex 588 68 10ms 3 Oct 2021 779th Jaydosu 588 68 9ms 13 Oct 2021 779th aazuspan 588 68 10ms 27 Dec 2021 779th xy3 🇮🇪 588 68 10ms 18 Jan 2022 779th karhuthebear 588 68 9ms 9 May 2022 779th georgehulme 588 68 9ms 12 Oct 2022 779th r-benson 🇬🇧 588 68 16ms 1 Feb 2023 779th ItsEthanDev 588 68 10ms 13 Dec 2023 779th smokestacklightnin 🇺🇸 588 68 9ms 10 Jan 2024 779th sambouilloud 588 68 17ms 11 Apr 2024 779th DrJoWe 588 68 10ms 14 May 2024 First Prev 721–800 of 1,293 Next Last
