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?
Odious 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 524th mauro-1 🇮🇹 769 52 10ms 18 Oct 2020 524th Andre3582 769 52 9ms 27 Oct 2020 524th SupImDos 769 52 10ms 10 Nov 2020 524th wrhm 769 52 9ms 12 Dec 2020 524th mizuzimu 769 52 10ms 21 Dec 2020 524th fynnkroeger 769 52 9ms 13 Jan 2021 524th BBoehm 🇩🇪 769 52 9ms 19 Jan 2021 524th SnowballSH 769 52 10ms 27 Jan 2021 524th Espiobest 769 52 10ms 31 Jan 2021 524th artieleach 769 52 9ms 8 Feb 2021 524th pvilimas 769 52 10ms 15 Feb 2021 524th frogtd 769 52 9ms 23 Feb 2021 524th BekhruzSNiyazov 769 52 9ms 26 Feb 2021 524th potato-jackson 769 52 10ms 3 Mar 2021 524th danielwang5 769 52 9ms 9 Mar 2021 524th mothcolada 🇺🇸 769 52 9ms 10 Mar 2021 524th richmonddecker 769 52 10ms 22 Mar 2021 524th PYRiTEmonark 769 52 10ms 14 Apr 2021 524th StHagel 769 52 9ms 7 May 2021 524th lilyyy411 769 52 10ms 10 Sep 2021 524th pengu1n-master 769 52 11ms 24 Sep 2021 524th redbeancola 769 52 11ms 10 Oct 2021 524th sbr075 769 52 10ms 7 Dec 2021 524th ellieoverwood 769 52 9ms 29 Dec 2021 524th kyleclaassen 769 52 9ms 9 Feb 2022 524th JuliaSzulc 769 52 9ms 16 Mar 2022 524th GeneralTwi 769 52 9ms 9 Apr 2022 524th Sandmann6d 769 52 9ms 22 Apr 2022 524th krcs 🇵🇱 769 52 9ms 3 May 2022 524th programjames 769 52 9ms 6 May 2022 524th Trunksistor 🇫🇷 769 52 9ms 18 May 2022 524th P-Quentin 🇫🇷 769 52 11ms 3 Aug 2022 524th jaxmattfair 🇺🇸 769 52 9ms 5 Aug 2022 524th NerdyMcNerd42 769 52 9ms 14 Aug 2022 524th eshilo-draper 769 52 9ms 11 Sep 2022 524th RoscoeSmith 769 52 10ms 14 Sep 2022 524th johndixon01 769 52 10ms 22 Sep 2022 524th fredrik-bakke 🇳🇴 769 52 18ms 2 Oct 2022 524th OrBenYosef 769 52 9ms 20 Dec 2022 524th mdnestor 769 52 10ms 28 Dec 2022 524th NOS4A5I 769 52 17ms 30 Dec 2022 524th Schreipfelerer 769 52 19ms 9 Apr 2023 524th mbittner20 769 52 10ms 27 May 2023 524th camieac 🇬🇧 769 52 9ms 8 Jun 2023 524th Vaekor 769 52 9ms 9 Jul 2023 524th clemmers 🇺🇸 769 52 9ms 30 Jul 2023 524th 11robert11 769 52 9ms 30 Jul 2023 524th horiiseun 769 52 10ms 1 Aug 2023 524th b20fuji 769 52 9ms 18 Oct 2023 524th TinyTheBrontosaurus 769 52 10ms 26 Nov 2023 524th Saaxxx 769 52 10ms 30 Nov 2023 524th epic-programmer-guy 769 52 10ms 20 Dec 2023 524th Bergschaf 769 52 9ms 24 Dec 2023 524th j3mak 769 52 9ms 19 Jan 2024 524th Hritik00923 769 52 9ms 31 Mar 2024 524th willschremmer 769 52 9ms 28 Apr 2024 524th therealnumbers 769 52 10ms 3 Jun 2024 524th Ralac07 🇦🇺 769 52 9ms 12 Jun 2024 524th CutSandstone 769 52 9ms 2 Jul 2024 524th IoLimmer 769 52 10ms 16 Jul 2024 524th Ythaenagor 769 52 9ms 5 Aug 2024 524th CyberTapir 769 52 10ms 28 Aug 2024 524th JesseNoEyes 🇺🇸 769 52 10ms 2 Oct 2024 524th gthayden23 769 52 10ms 5 Oct 2024 524th RedzGoose 🇦🇺 769 52 10ms 14 Oct 2024 524th SURAJMITTAL 769 52 9ms 19 Dec 2024 524th WillowWispy 769 52 10ms 14 Mar 2025 524th TheZwierzLF 🇵🇱 769 52 9ms 21 May 2025 524th vgamula 🇺🇦 769 52 9ms 15 Jul 2025 524th katss2 769 52 11ms 14 Aug 2025 524th Code-Coder-coder 769 52 10ms 11 Oct 2025 524th jusaka 769 52 11ms 6 days ago 633rd pbragancacabral 755 53 9ms 6 Nov 2018 633rd mvrkws 755 53 9ms 27 Apr 2019 633rd oscarlvp 755 53 9ms 30 Apr 2019 633rd Edgex42 755 53 10ms 2 Jun 2019 633rd estomagordo 🇳🇱 755 53 9ms 2 Aug 2019 633rd adoxography 755 53 9ms 10 Oct 2019 633rd egelmex 755 53 10ms 14 Nov 2019 633rd Pie42 755 53 10ms 7 Apr 2020 First Prev 561–640 of 945 Next Last