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?
Leyland Numbers in Python in bytes. 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 Bytes Time Submitted 233rd jacekwladzinski 802 91 9ms 4 Oct 2025 242nd mstang107 793 92 16ms 20 Dec 2023 242nd jameswmccarty 793 92 10ms 11 Jul 2024 242nd PyryL 🇫🇮 793 92 9ms 22 Aug 2024 242nd JesseNoEyes 🇺🇸 793 92 10ms 17 Nov 2024 246th adoxography 785 93 10ms 8 Oct 2020 246th nullie 785 93 10ms 9 Jun 2022 246th julienlamoureux78 785 93 13ms 18 Aug 2022 246th CatsAreFluffy 785 93 11ms 21 Dec 2023 246th elgan65536 🇺🇸 785 93 9ms 31 Mar 2024 246th Mikey-Beep 🇬🇧 785 93 10ms 2 Jun 2024 246th Papushkado 785 93 12ms 18 Nov 2025 246th klixel 🇨🇦 785 93 10ms 9 Jan 2026 254th bbakersmith 777 94 9ms 18 Jul 2021 254th jfallon1997 777 94 11ms 9 Aug 2022 254th wobblybits 777 94 10ms 19 Aug 2025 257th LeeCamp 768 95 10ms 27 Dec 2021 257th 4ndyJ 🇬🇧 768 95 9ms 7 Feb 2023 257th 0-ag 768 95 11ms 25 Aug 2025 257th nemoyatpeace 768 95 10ms 14 Jan 2026 257th TheSecondComing123 768 95 11ms 5 Feb 2026 262nd Psirving 760 96 10ms 29 Jul 2020 262nd henrytranter 760 96 10ms 27 Aug 2020 262nd chrishm909 760 96 11ms 23 May 2021 262nd sleepyStick 760 96 16ms 3 Dec 2021 262nd tterem 760 96 11ms 8 Jun 2022 262nd P-Quentin 🇫🇷 760 96 12ms 3 Aug 2022 262nd sbyrne51 760 96 10ms 1 Oct 2022 262nd NerdyMcNerd42 760 96 10ms 27 Oct 2022 270th asadullayev 753 97 15ms 3 Mar 2021 270th befoster 753 97 10ms 10 Apr 2021 270th myleopard 753 97 14ms 15 Oct 2021 270th Andrey135296 753 97 10ms 4 Apr 2022 270th Bodo171 753 97 16ms 25 Nov 2022 275th ehulinsky 🇺🇸 745 98 10ms 11 Nov 2021 275th Trunksistor 🇫🇷 745 98 10ms 24 May 2022 275th MichaelMBradley 🇨🇦 745 98 10ms 19 Jun 2022 278th vezzick 737 99 14ms 7 Mar 2021 278th TimHuisman1703 737 99 10ms 7 Jan 2022 278th hellwue 737 99 9ms 25 Feb 2022 278th davecame 737 99 10ms 2 Aug 2023 278th Googolplexo 🇷🇺 737 99 15ms 63 mins ago 283rd EwanSkene 730 100 12ms 3 Sep 2020 283rd boxjelly 730 100 11ms 14 Feb 2021 283rd PhysicDev 🇫🇷 730 100 10ms 16 Mar 2022 283rd wen1now 730 100 10ms 6 Nov 2023 283rd Alban-Boissard 730 100 10ms 14 Jun 2025 283rd TheZwierzLF 🇵🇱 730 100 10ms 17 Dec 2025 289th jameslindesay 723 101 42ms 25 Feb 2021 289th galloj 🇨🇿 723 101 11ms 21 Aug 2022 289th Acky-Acky 723 101 11ms 9 May 2024 292nd findegil 716 102 10ms 26 Aug 2020 292nd austinrwarner 716 102 11ms 25 Dec 2020 292nd Omega65536 🇩🇪 716 102 16ms 6 Jan 2021 292nd jhpaques 🇫🇷 716 102 14ms 29 Jul 2022 292nd jamesthekee 716 102 10ms 25 Jan 2025 297th atazzam 🇺🇸 709 103 14ms 2 Apr 2022 297th vishwathg 709 103 10ms 21 Aug 2022 297th fredrik-bakke 🇳🇴 709 103 10ms 2 Oct 2022 297th willschremmer 709 103 10ms 28 Apr 2024 297th wuzekai518 709 103 10ms 23 Jul 2024 297th Mabeloid 🇳🇴 709 103 9ms 22 Sep 2024 297th WillowWispy 709 103 10ms 17 Mar 2025 304th ydevor 🇮🇱 702 104 10ms 10 Mar 2021 304th Fishron 702 104 13ms 19 Oct 2021 306th mathwiz42 695 105 10ms 18 Aug 2020 306th PFischbeck 695 105 11ms 31 Oct 2020 306th estomagordo 🇳🇱 695 105 9ms 6 Dec 2021 306th 0dyse 695 105 14ms 12 Sep 2025 310th artieleach 689 106 14ms 7 Feb 2021 310th martinnorling 🇸🇪 689 106 10ms 31 Jan 2022 310th dylanjones92 689 106 10ms 26 Jan 2024 310th Europe2048 689 106 10ms 12 days ago 314th dostuffthatmatters 682 107 10ms 26 Jul 2020 314th guilhem-roy 🇫🇷 682 107 10ms 28 Feb 2022 314th celiendonze 🇨🇭 682 107 13ms 20 Apr 2023 314th Stockoh 🇫🇷 682 107 17ms 2 Oct 2024 314th tomh1012 682 107 10ms 24 Feb 2026 319th Ted-Barrett 🇦🇺 676 108 10ms 30 Sep 2021 319th vodker1 676 108 10ms 7 Mar 2022 First Prev 241–320 of 390 Next Last
