The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 2 days. Why not try and solve them ahead of time?
Recamán 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 157th LiquidPulsar 775 71 11ms 29 Nov 2021 157th CedricGebistorf 775 71 10ms 11 Feb 2022 157th MichalMarsalek 🇨🇿 775 71 10ms 16 Mar 2022 157th Tess2662 775 71 10ms 28 Aug 2022 157th TaserTheFox 🇺🇸 775 71 25ms 25 May 2023 157th AlexanderFair 775 71 10ms 1 Jul 2023 157th quimey 775 71 10ms 28 Jul 2023 157th yourlefthandman 775 71 10ms 17 Aug 2023 157th FortuiteMan 🇫🇷 775 71 10ms 26 Aug 2023 157th PrathamMehta08 775 71 19ms 6 Dec 2023 157th jatloe 775 71 17ms 28 Jan 2024 157th mathisfun271 775 71 10ms 5 Feb 2024 157th jmfk 775 71 17ms 12 Apr 2024 157th aalec 775 71 18ms 4 May 2024 157th ahmetdemirag 🇨🇾 775 71 10ms 14 Jun 2024 157th azure-blondon 775 71 10ms 16 Jun 2024 157th CutSandstone 775 71 10ms 19 Jul 2024 157th CommandLeo 🇮🇹 775 71 10ms 22 Dec 2025 157th 77Tigers 775 71 16ms 9 Jan 2026 157th FoxInTheClouds 775 71 16ms 5 Feb 2026 157th Googolplexo 🇷🇺 775 71 10ms 5 hours ago 182nd jacklynnepenick 764 72 17ms 26 Aug 2021 182nd hellwue 764 72 10ms 25 Feb 2022 182nd nullie 764 72 9ms 14 Jun 2022 182nd CheeseCake628 🇳🇴 764 72 10ms 6 Mar 2023 182nd fourth-bit 764 72 16ms 3 Jul 2023 182nd jipsong 🇩🇪 764 72 10ms 23 Jul 2024 182nd Terobero 764 72 18ms 21 Aug 2024 182nd edsrzf 🇳🇿 764 72 18ms 28 Sep 2024 182nd jamesthekee 764 72 10ms 26 Jan 2025 182nd dirckvdende 764 72 11ms 20 Jul 2025 182nd Alex-Huggett 🇬🇧 764 72 11ms 14 Sep 2025 182nd Emutis 🇱🇹 764 72 10ms 1 Mar 2026 194th AkashTandon167 753 73 17ms 28 Dec 2020 194th NewDefectus 🇮🇱 753 73 10ms 28 Dec 2020 194th TobyBoyne 🇬🇧 753 73 16ms 30 Dec 2020 194th NanduBC 753 73 24ms 23 Mar 2021 194th face0xff 753 73 17ms 20 Oct 2021 194th RDShah 753 73 9ms 15 May 2022 194th StefanHabel 🇨🇦 753 73 10ms 31 Dec 2022 194th betaveros 753 73 18ms 31 Dec 2022 194th mstang107 753 73 17ms 20 Dec 2023 194th Andrey135296 753 73 11ms 17 Sep 2024 194th lhulinsky 753 73 11ms 22 Oct 2024 194th moustave 753 73 17ms 10 Dec 2024 194th Matter1024 🇮🇳 753 73 19ms 6 hours ago 207th qrico64 743 74 10ms 2 Feb 2021 207th bastienvoirin 🇫🇷 743 74 10ms 10 May 2021 207th mauro-1 🇮🇹 743 74 10ms 17 Aug 2021 207th petar-donchev 743 74 17ms 5 Dec 2021 207th knutae 🇳🇴 743 74 10ms 6 Dec 2021 207th clementblaudeau 743 74 18ms 27 Jan 2022 207th j-Ewan 743 74 17ms 1 Mar 2022 207th guilhem-roy 🇫🇷 743 74 16ms 3 Mar 2022 207th Trunksistor 🇫🇷 743 74 18ms 19 May 2022 207th nstearns96 🇬🇧 743 74 19ms 12 Dec 2022 207th vishwathg 743 74 11ms 7 Apr 2023 207th dranjohn 743 74 10ms 11 Sep 2023 207th rollershutter 743 74 16ms 23 Oct 2023 207th starfihs 743 74 28ms 5 Aug 2024 207th BREMAUCY 🇫🇷 743 74 10ms 12 Aug 2025 207th wobblybits 743 74 9ms 23 Aug 2025 207th michelebastione 🇮🇹 743 74 10ms 3 Nov 2025 207th TheSecondComing123 743 74 10ms 5 Feb 2026 225th zbreit 🇺🇸 733 75 10ms 20 Aug 2021 225th itsjustfreekie 733 75 11ms 22 Sep 2021 225th amollberg 🇸🇪 733 75 10ms 27 Jan 2022 225th NerdyMcNerd42 733 75 9ms 13 Aug 2022 225th MaxElf999 733 75 16ms 3 Oct 2022 225th LeeCamp 733 75 10ms 13 Jan 2023 225th hiichbindermax 733 75 11ms 17 Feb 2023 225th mbittner20 733 75 10ms 27 May 2023 225th ImpressedByRocks 733 75 17ms 17 May 2024 225th Bulmenisaurus 733 75 10ms 4 Nov 2024 225th bltnppcnt 733 75 19ms 5 Jan 2025 225th 40fied4t 733 75 11ms 22 May 2025 225th Andrey2001 733 75 17ms 9 Dec 2025 238th tomh1012 724 76 10ms 3 Mar 2021 238th gilufin 724 76 11ms 23 Jun 2021 238th Mikey-Beep 🇬🇧 724 76 10ms 6 Oct 2022 First Prev 161–240 of 439 Next Last
