ISBN 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions 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 Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL ArkScript 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 ><> 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 ALGOL 68 APL ArkScript 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions 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 Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 238th DrPiranoid 559 127 10ms 8 Oct 2022 238th epic-programmer-guy 559 127 9ms 21 Dec 2023 238th 40fied4t 559 127 12ms 15 May 2025 238th Luke44565 559 127 11ms 10 Aug 2025 238th jacekwladzinski 559 127 10ms 5 Oct 2025 246th gchenfc 555 128 9ms 24 Jan 2022 246th pyrolitic 🇮🇪 555 128 10ms 5 Apr 2022 246th Wildst 555 128 11ms 4 Aug 2023 246th sleepyStick 555 128 10ms 7 Dec 2023 246th damoose717 555 128 10ms 23 May 2025 251st amollberg 🇸🇪 550 129 9ms 21 Jan 2022 251st jfallon1997 550 129 10ms 18 Aug 2022 251st CameronGBell 550 129 10ms 10 Nov 2022 251st 2011-Chan-Ethan 550 129 19ms 20 Jul 2023 251st inverseLorentz 🇦🇺 550 129 10ms 8 Oct 2023 251st trsav 550 129 17ms 29 Oct 2023 251st aalec 550 129 17ms 24 Apr 2024 251st Europe2048 550 129 10ms 16 Mar 2025 251st pquline 550 129 11ms 23 Apr 2025 260th AkashTandon167 546 130 10ms 18 Jan 2022 260th feherd 546 130 19ms 16 Apr 2022 260th caraar12345 546 130 9ms 27 May 2022 260th ordinary-slim 546 130 12ms 18 Nov 2022 260th bonevbs 546 130 10ms 18 Nov 2022 260th mbittner20 546 130 9ms 27 May 2023 260th resoNathan 546 130 10ms 13 May 2024 260th codingisgreatbutiamnot 546 130 10ms 9 Aug 2024 260th NanduBC 546 130 10ms 3 Sep 2024 269th michelebastione 🇮🇹 542 131 17ms 14 Jan 2022 269th midnattssol 🇸🇪 542 131 9ms 19 May 2022 269th aksyristos 542 131 20ms 11 Jun 2023 269th alexjurkiewicz 🇦🇺 542 131 10ms 8 Nov 2023 269th sciencedjinn 542 131 11ms 8 Nov 2024 269th wobblybits 542 131 17ms 15 Aug 2025 269th cthierfelder 🇲🇨 542 131 12ms 12 Sep 2025 269th kayaulai 542 131 11ms 23 Nov 2025 277th twocatsinatrenchcoat 538 132 11ms 10 May 2022 277th dillon-duncando 538 132 10ms 19 Oct 2022 277th eiburns 538 132 9ms 11 Oct 2023 277th estomagordo 🇳🇱 538 132 11ms 25 Mar 2025 281st adoxography 534 133 10ms 20 Jan 2022 281st jhpaques 🇫🇷 534 133 10ms 26 Jul 2022 281st dranjohn 534 133 10ms 10 Sep 2023 281st countlpaul-dotcom 534 133 18ms 19 Oct 2025 281st rustykitty 🇺🇸 534 133 17ms 10 hours ago 286th zoemarschner 530 134 10ms 16 May 2022 286th nullie 530 134 10ms 8 Jun 2022 286th thomasklunker 530 134 10ms 20 Feb 2023 286th yuchuehw 530 134 10ms 22 Jan 2024 290th petroselo 526 135 13ms 9 Apr 2022 290th trist224 🇫🇷 526 135 11ms 29 Sep 2022 290th mrmena 🇦🇺 526 135 19ms 16 Apr 2024 293rd kyleclaassen 522 136 11ms 9 Feb 2022 293rd za3k 522 136 10ms 8 Oct 2022 293rd shibacho 🇯🇵 522 136 11ms 30 Nov 2022 293rd chlorobenzene12 522 136 10ms 26 Dec 2022 293rd Schreipfelerer 522 136 10ms 11 Sep 2024 293rd hamilton-bonds 522 136 10ms 12 Nov 2024 293rd ffelixm 522 136 10ms 7 Jun 2025 300th MathieuIko 518 137 10ms 21 Feb 2022 300th RDShah 518 137 11ms 18 May 2022 300th cameronezell 518 137 9ms 19 Jul 2022 300th enbyte 518 137 17ms 20 Dec 2022 304th Troon 514 138 22ms 11 Oct 2022 304th nayakrujul 514 138 18ms 3 Jan 2023 304th celiendonze 🇨🇭 514 138 12ms 20 Apr 2023 304th willdaspit 514 138 9ms 6 Aug 2023 304th GitQuick 514 138 9ms 9 Mar 2024 309th brochmann 🇸🇪 511 139 9ms 6 Feb 2022 309th halp1 511 139 10ms 8 Apr 2022 309th AliceFord 511 139 10ms 2 Jun 2022 309th luftj 511 139 10ms 9 Aug 2022 309th pustovalovm 511 139 11ms 16 Jan 2023 309th Andrey2001 511 139 17ms 5 days ago 315th nmgetahun 507 140 11ms 5 Dec 2022 316th LeeCamp 504 141 9ms 12 Jan 2023 316th drochom 504 141 17ms 22 Jun 2024 318th bsoyka 🇺🇸 500 142 10ms 16 Jul 2022 318th ComputerKWasTaken 🇺🇸 500 142 10ms 21 Jan 2025 320th zt14427 497 143 10ms 6 Oct 2023 First Prev 241–320 of 370 Next Last