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?
Fibonacci 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 191st EzraG101 947 38 9ms 7 Dec 2023 191st Programmer-Arvind 947 38 9ms 10 Dec 2023 191st lucasalavapena 947 38 11ms 11 Dec 2023 191st Chimplement 947 38 9ms 12 Dec 2023 191st Glinte 947 38 10ms 13 Dec 2023 191st Yongmin870 947 38 9ms 16 Dec 2023 191st ItsEthanDev 947 38 10ms 16 Dec 2023 191st kkoenig 947 38 10ms 21 Dec 2023 191st Techdude01 947 38 10ms 22 Dec 2023 191st Isaac-Metthez 947 38 9ms 22 Dec 2023 191st rsgray 947 38 9ms 29 Dec 2023 191st logvp 947 38 10ms 30 Dec 2023 191st piano-miles 947 38 9ms 30 Dec 2023 191st epic-programmer-guy 947 38 10ms 31 Dec 2023 191st theadamabrams 947 38 10ms 1 Jan 2024 191st PowershellKnut 🇳🇴 947 38 10ms 7 Jan 2024 191st BenjaminHGong 947 38 9ms 22 Jan 2024 191st dylanarmstrong 947 38 9ms 23 Jan 2024 191st byronknoll 🇺🇸 947 38 9ms 7 Feb 2024 191st roupiq 🇵🇱 947 38 10ms 10 Feb 2024 191st Chaitanya-Keyal 947 38 10ms 13 Feb 2024 191st Bmrl7 947 38 9ms 15 Feb 2024 191st SB-945 947 38 10ms 16 Feb 2024 191st Herbert00709 🇵🇱 947 38 10ms 19 Feb 2024 191st MaxElf999 947 38 10ms 19 Feb 2024 191st Shynif 947 38 11ms 20 Feb 2024 191st sultan 947 38 10ms 21 Feb 2024 191st jbjd 947 38 10ms 24 Feb 2024 191st Trusly 947 38 10ms 26 Feb 2024 191st FCORMERAIS 947 38 10ms 4 Mar 2024 191st ngthanhtrung23 947 38 10ms 9 Mar 2024 191st dsm0014 947 38 11ms 21 Mar 2024 191st NickTheEASDude 🇺🇸 947 38 10ms 21 Mar 2024 191st RobertHoeh 947 38 10ms 21 Mar 2024 191st sacredeux 947 38 10ms 27 Mar 2024 191st robbarry 947 38 10ms 2 Apr 2024 191st aalec 947 38 11ms 23 Apr 2024 191st thienudomsrirungruang 947 38 10ms 25 Apr 2024 191st IlkkaTakala 947 38 9ms 30 Apr 2024 191st gabe-gallegos 947 38 10ms 30 Apr 2024 191st kejcao 🇨🇦 947 38 10ms 10 May 2024 191st shreyass-ranganatha 947 38 10ms 23 May 2024 191st stertooy 🇧🇪 947 38 9ms 9 Jun 2024 191st RedzGoose 🇦🇺 947 38 9ms 12 Jun 2024 191st wuzekai518 947 38 11ms 12 Jun 2024 191st drochom 947 38 9ms 16 Jun 2024 191st ahmetdemirag 🇨🇾 947 38 10ms 30 Jun 2024 191st ComputerKWasTaken 🇺🇸 947 38 10ms 1 Jul 2024 191st Ralac07 🇦🇺 947 38 11ms 4 Jul 2024 191st CutSandstone 947 38 10ms 5 Jul 2024 191st egasyelir 947 38 9ms 8 Jul 2024 191st cykim8811 947 38 10ms 10 Jul 2024 191st codingisgreatbutiamnot 947 38 10ms 15 Jul 2024 191st liamLatour 947 38 10ms 21 Jul 2024 191st roguh 🇬🇹 947 38 10ms 31 Jul 2024 191st FranklinJiaChen 947 38 10ms 5 Aug 2024 191st Dpxx 947 38 10ms 6 Aug 2024 191st imelxr 🇮🇱 947 38 10ms 14 Aug 2024 191st HumanoidCPU 947 38 11ms 20 Aug 2024 191st Terobero 947 38 10ms 21 Aug 2024 191st PyryL 🇫🇮 947 38 9ms 21 Aug 2024 191st R4z0rX 947 38 10ms 24 Aug 2024 191st EnTerr 947 38 10ms 25 Aug 2024 191st alemelis 947 38 9ms 14 Sep 2024 191st hiichbindermax 947 38 9ms 17 Sep 2024 191st Mabeloid 🇳🇴 947 38 9ms 18 Sep 2024 191st Vexxter9 🇳🇱 947 38 10ms 20 Sep 2024 191st hydrogencitrus 947 38 10ms 20 Sep 2024 191st abhishekg999 947 38 11ms 21 Sep 2024 191st XavierRex 947 38 9ms 23 Sep 2024 191st jatloe 947 38 9ms 26 Sep 2024 191st zlliu246 947 38 10ms 2 Oct 2024 191st stuartjmu 947 38 10ms 5 Oct 2024 191st cardosoo 947 38 9ms 6 Oct 2024 191st jmonroy 947 38 10ms 6 Oct 2024 191st pleikauf 947 38 10ms 7 Oct 2024 191st ffreemt 947 38 10ms 8 Oct 2024 191st pres-abhisheksinha 947 38 9ms 8 Oct 2024 191st evangrau 947 38 10ms 8 Oct 2024 191st lzburkham 947 38 9ms 8 Oct 2024 First Prev 641–720 of 2,095 Next Last