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 321st dymowski 670 109 10ms 17 Aug 2020 321st Florian-Mt 670 109 9ms 29 Sep 2023 323rd CRHillman 664 110 11ms 14 Sep 2020 323rd the-soph-ia 664 110 10ms 7 Mar 2021 323rd Jacob385 664 110 4,236ms 6 Mar 2024 326th eiburns 658 111 10ms 4 Jan 2022 326th Vaekor 658 111 10ms 9 Jul 2023 328th SniperSmiley 🇺🇸 652 112 14ms 24 Jun 2022 328th 5quiwyrm 652 112 10ms 9 Dec 2024 328th TJK-S 652 112 10ms 1 Dec 2025 331st OppositeShark 646 113 11ms 20 Jul 2022 331st codewrite 🇬🇧 646 113 10ms 13 Jul 2025 333rd vprab 640 114 10ms 18 Dec 2020 333rd cthierfelder 🇲🇨 640 114 11ms 6 Sep 2025 335th SlicesOfficial 635 115 12ms 16 Oct 2021 335th cingulataluke 635 115 12ms 28 Aug 2023 335th Jaydosu 635 115 10ms 26 Jun 2024 338th wrhm 629 116 10ms 13 Dec 2020 338th orifu 629 116 12ms 25 Jun 2021 338th hymanimy 629 116 9ms 22 Jul 2021 341st petar-donchev 624 117 11ms 5 Dec 2021 341st Jaca1878 624 117 12ms 9 May 2022 343rd pmooreh 619 118 10ms 19 Aug 2022 344th WilliamBate 613 119 10ms 18 Aug 2020 344th shraiwi 613 119 10ms 7 Mar 2021 344th DynamiteBear 613 119 10ms 25 Nov 2022 347th eggplants 🇯🇵 608 120 11ms 26 Nov 2020 347th Ripick 608 120 10ms 22 May 2025 349th nooberitess 603 121 10ms 8 Apr 2025 350th 1231234md5 🇨🇳 598 122 10ms 10 Dec 2023 350th qwjhvbxi 598 122 11ms 7 Feb 2024 352nd twocatsinatrenchcoat 593 123 9ms 5 May 2022 353rd vonKrafft 589 124 10ms 18 Sep 2020 354th drewhead118 584 125 10ms 30 May 2022 354th ComputerKWasTaken 🇺🇸 584 125 10ms 5 Sep 2024 356th Zhenyu-Bo 575 127 9ms 31 Jul 2025 357th mhenion8293 🇺🇸 566 129 18ms 19 Jan 2022 358th brimstonetrader 562 130 10ms 22 Jan 2024 359th dillon-duncando 557 131 10ms 3 Oct 2022 360th mbittner20 553 132 9ms 11 Jul 2024 361st DarkTemplar5 545 134 10ms 11 Oct 2020 361st zwxzwxzwx21 545 134 17ms 18 Jan 2024 363rd xkacer 🇨🇿 533 137 16ms 30 Jan 2021 364th SURAJMITTAL 503 145 9ms 19 Dec 2024 365th Bananapants22 474 154 10ms 30 Aug 2022 365th kevinnaviapaiva 474 154 10ms 26 Feb 2025 367th jstechman 465 157 12ms 25 Feb 2024 368th felixcroc 451 162 37ms 16 Apr 2022 369th muser-logiccpu 🇺🇦 420 174 10ms 25 Aug 2025 370th arinhyther 392 186 11ms 30 Dec 2022 371st NoneTheFewer 369 198 10ms 27 Dec 2025 372nd glf818 329 222 9ms 22 Jul 2021 373rd szmeku 296 247 10ms 5 Feb 2021 374th fl3ur1nestimable 264 276 10ms 3 Apr 2022 375th WilliamRhind123 243 300 12ms 9 Dec 2025 376th nickweissert-star 223 327 10ms 12 days ago 377th alfonsoalves 182 402 240ms 20 Jul 2024 378th NanduBC 81 898 10ms 18 Mar 2021 378th enbyte 81 898 9ms 10 Jun 2021 378th theunofficialcoder 81 898 10ms 3 Aug 2021 378th bwat2 81 898 10ms 6 Nov 2021 378th karhuthebear 81 898 9ms 10 May 2022 378th andre-de-lorde 81 898 9ms 7 Sep 2022 378th retrohun 81 898 10ms 28 Dec 2022 378th HumanoidCPU 81 898 10ms 23 Apr 2024 386th mothcolada 🇺🇸 73 1,000 10ms 27 Jan 2021 386th KatieLG-Transpiler 🇬🇧 73 1,000 10ms 23 Jun 2022 386th zt14427 73 1,000 11ms 18 Nov 2023 389th ro011110ot 72 1,017 10ms 25 Aug 2025 390th AidanWalter 66 1,110 10ms 3 Jan 2025 First Prev 321–390 of 390
