The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 4 days. Why not try and solve them ahead of time?
Vampire 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 75th inventshah 815 130 826ms 27 Nov 2023 75th BREMAUCY 🇫🇷 815 130 554ms 14 May 2024 83rd TobyBoyne 🇬🇧 803 132 252ms 15 Apr 2022 83rd keelimeguy 🇺🇸 803 132 365ms 17 May 2025 83rd plcc0 803 132 689ms 31 Oct 2025 83rd fuzzylojik-golf 🇺🇸 803 132 680ms 4 Jan 2026 87th qpwoeirut 797 133 892ms 31 Oct 2025 87th Lv0Sys 🇵🇱 797 133 648ms 4 Dec 2025 89th neihousaigaai 791 134 276ms 31 Oct 2021 89th davecame 791 134 797ms 24 Oct 2025 91st Indivicivet 785 135 403ms 26 Oct 2021 91st commandz0 🇺🇸 785 135 394ms 5 Sep 2022 93rd CedricGebistorf 779 136 293ms 6 Mar 2022 93rd croc54 779 136 682ms 18 Jan 2025 93rd InigoK 🇺🇸 779 136 722ms 29 Aug 2025 93rd cefqrn 779 136 302ms 31 Oct 2025 97th suwat513 774 137 558ms 6 Dec 2022 97th andrewjc2000 774 137 777ms 18 Jul 2025 97th Babafaba 774 137 551ms 4 Nov 2025 100th rak1507 🇬🇧 768 138 431ms 23 Feb 2021 100th EnTerr 768 138 568ms 15 Sep 2024 102nd jiaminglimjm 🇲🇾 763 139 378ms 9 Jan 2021 102nd jacklynnepenick 763 139 634ms 26 Aug 2021 102nd luuumine 🇫🇷 763 139 272ms 27 Oct 2025 102nd zbreit 🇺🇸 763 139 280ms 15 Nov 2025 106th QuincyNash 🇺🇸 757 140 876ms 6 Dec 2022 106th badboj40 757 140 522ms 18 Jan 2023 108th AkashTandon167 752 141 297ms 29 Oct 2021 108th Troon 752 141 587ms 28 Feb 2025 110th betaveros 746 142 637ms 1 Jan 2023 110th Mikey-Beep 🇬🇧 746 142 625ms 27 Jul 2025 112th Dazza314 🇬🇧 741 143 821ms 5 Nov 2020 112th OllieBoyne 🇬🇧 741 143 417ms 16 Jan 2021 112th yzhs 🇩🇪 741 143 643ms 7 Jun 2022 112th TaserTheFox 🇺🇸 741 143 564ms 9 May 2023 112th 2011-Chan-Ethan 741 143 718ms 16 Sep 2023 112th pde-bakk 🇳🇱 741 143 598ms 25 Oct 2023 112th SB-945 741 143 397ms 7 Apr 2024 112th StardustGogeta 741 143 294ms 31 Oct 2025 120th SupImDos 736 144 669ms 5 Nov 2020 121st RDShah 731 145 628ms 15 Apr 2021 121st ehulinsky 🇺🇸 731 145 524ms 28 Sep 2021 121st mathisfun271 731 145 659ms 20 Nov 2023 124th Pena86 726 146 430ms 27 Feb 2021 124th fredrik-bakke 🇳🇴 726 146 477ms 2 Nov 2022 126th jmerle 🇳🇱 721 147 730ms 31 Oct 2022 127th HumanEquivalentUnit 716 148 488ms 26 Nov 2023 127th Freddiechang 716 148 647ms 14 Mar 2024 129th jbjd 711 149 336ms 27 Feb 2024 129th keegan-t 🇨🇦 711 149 817ms 24 Apr 2025 129th rschwa6308 🇺🇸 711 149 308ms 30 Oct 2025 129th Languag3 711 149 265ms 31 Oct 2025 133rd firegene 🇮🇪 707 150 238ms 3 Dec 2023 133rd jacekwladzinski 707 150 275ms 3 Oct 2025 135th marcin7Cd 697 152 592ms 21 Dec 2020 135th amollberg 🇸🇪 697 152 412ms 21 Jan 2022 135th petroselo 697 152 677ms 12 Apr 2022 135th galloj 🇨🇿 697 152 746ms 6 Nov 2022 139th za3k 693 153 498ms 15 Oct 2022 140th rowboat1 688 154 889ms 22 Jun 2022 140th hellwue 688 154 268ms 17 Feb 2023 140th hiichbindermax 688 154 266ms 17 Feb 2023 143rd MichalMarsalek 🇨🇿 675 157 981ms 28 Jun 2022 143rd janbehrens 🇩🇪 675 157 390ms 17 Jun 2023 143rd yuchuehw 675 157 742ms 19 Jan 2024 143rd xyangst 675 157 764ms 15 Oct 2024 147th ArmaanAS 671 158 514ms 3 Apr 2021 147th PyryL 🇫🇮 671 158 948ms 23 Aug 2024 149th ludwig-n 667 159 354ms 7 Apr 2021 150th itiievskyi 🇺🇦 663 160 484ms 6 Jan 2021 151st cros107 🇦🇺 658 161 481ms 17 Oct 2023 152nd geofft 654 162 673ms 13 Dec 2020 152nd adoxography 654 162 511ms 25 Mar 2023 152nd JOrE20 654 162 278ms 25 Feb 2026 155th guilhem-roy 🇫🇷 650 163 527ms 7 Mar 2022 155th Fishron 650 163 483ms 13 Jun 2022 155th Bodo171 650 163 653ms 7 Dec 2022 155th jeff-at-tamer-dot-codes 🇺🇸 650 163 750ms 3 Nov 2023 155th roguh 🇬🇹 650 163 768ms 13 Oct 2024 160th knutae 🇳🇴 646 164 561ms 15 Jul 2021 First Prev 81–160 of 266 Next Last