ISBN in all languages 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 Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 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 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 ><> ALGOL 68 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 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 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 Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 561st h3ra993huskp 🇯🇵 805 133 496ms 30 Nov 2025 562nd scpchicken 🇵🇼 804 58 3ms 22 Feb 2023 562nd blaztoma 🇱🇹 804 58 4ms 27 hours ago 564th mtirado1 804 108 2ms 6 May 2023 565th typeswitch-dev 🇵🇹 804 121 8ms 14 Aug 2023 566th Babafaba 803 94 475ms 28 Nov 2025 566th snoozingnewt 🇨🇦 803 94 497ms 19 days ago 568th btjones0 803 110 9ms 25 Jan 2022 568th adamnielson42 🇺🇸 803 110 10ms 25 Apr 2023 568th sultan 803 110 10ms 24 Feb 2024 568th fgrosshans 🇫🇷 803 110 10ms 16 Jul 2024 568th InigoK 🇺🇸 803 110 9ms 22 Sep 2025 568th albanian-laundromat 803 110 10ms 7 Nov 2025 568th vhoulbreque 🇫🇷 803 110 10ms 25 Nov 2025 575th madex 🇩🇪 803 115 2ms 10 Apr 2022 575th FragmentedCurve 803 115 2ms 22 Nov 2023 575th mathisfun271 803 115 2ms 5 Feb 2024 578th Shanethegamer 🇺🇸 803 168 25ms 28 Apr 2022 579th akshatj27 🇦🇶 799 68 37ms 10 Jan 2022 579th SirBogman 🇺🇸 799 68 38ms 19 May 2022 579th Shanethegamer 🇺🇸 799 68 37ms 27 May 2022 579th Haksell 🇦🇶 799 68 37ms 23 Feb 2023 579th anter69 🇭🇺 799 68 38ms 20 Nov 2023 584th Yewzir 🇧🇪 799 185 1,707ms 21 May 2024 585th igmcdowell 798 89 11ms 24 Feb 2022 585th inventshah 798 89 10ms 21 Jun 2022 585th olleicua 🇺🇸 798 89 11ms 3 Feb 2024 585th kpal81xd 798 89 11ms 15 Sep 2024 585th Shanethegamer 🇺🇸 798 89 143ms 8 Jan 2025 585th emplv 🇱🇻 798 89 158ms 28 Mar 2025 585th ovs-code 🇩🇪 798 89 146ms 17 Apr 2025 592nd adyache 🇺🇸 798 92 8ms 2 Aug 2023 593rd Shanethegamer 🇺🇸 797 115 374ms 21 Apr 2022 594th stefangimmillaro 797 152 147ms 28 Oct 2023 595th neihousaigaai 796 111 10ms 11 Jan 2022 595th knutae 🇳🇴 796 111 9ms 18 Jan 2022 595th rschwa6308 🇺🇸 796 111 10ms 22 Mar 2023 595th zbreit 🇺🇸 796 111 9ms 22 Mar 2023 595th plcc0 796 111 10ms 3 Mar 2025 595th emgordon154 796 111 10ms 25 Mar 2025 595th BREMAUCY 🇫🇷 796 111 10ms 15 Apr 2025 595th now4est 🇯🇵 796 111 10ms 25 Sep 2025 603rd MeWhenI 🇻🇦 796 116 2ms 5 Jul 2024 604th SirBogman 🇺🇸 795 39 42ms 4 Oct 2022 605th prplz 🇦🇺 795 70 256ms 19 Jan 2022 605th SirBogman 🇺🇸 795 70 217ms 19 May 2022 607th error256 794 74 742ms 26 days ago 608th Salutations45 792 66 2ms 2 Jan 2025 609th ovs-code 🇩🇪 792 153 232ms 21 Jun 2023 610th GrayJoKing 🇦🇺 791 59 4ms 14 Jan 2022 610th Shanethegamer 🇺🇸 791 59 3ms 20 Jun 2022 612th KrausRaus 🇺🇸 791 106 5ms 11 Nov 2023 613th MeWhenI 🇻🇦 791 112 199ms 4 Aug 2023 614th sean-niemann 🇺🇸 791 127 40ms 1 Dec 2023 615th tomh1012 790 98 419ms 31 Jan 2022 615th pkim 790 98 415ms 6 Apr 2023 615th danielxbauer 790 98 428ms 6 Apr 2023 615th meinsiedler 790 98 442ms 6 Apr 2023 615th postie77 790 98 429ms 8 May 2023 620th weliveinhell 🇭🇹 789 90 10ms 11 Jan 2024 620th Shanethegamer 🇺🇸 789 90 2,336ms 28 Oct 2024 620th DialFrost 🇸🇬 789 90 139ms 3 Nov 2024 623rd m-tkach 🇺🇦 789 117 1ms 11 Jan 2022 623rd prestosilver 🇺🇸 789 117 2ms 16 Dec 2025 625th 4hg 🇺🇸 788 69 35ms 30 Nov 2022 625th Andriamanitra 🇫🇮 788 69 36ms 17 Apr 2023 627th guilhem-roy 🇫🇷 788 112 9ms 5 Jun 2022 627th ahmetdemirag 🇨🇾 788 112 10ms 30 Jun 2024 627th CommandLeo 🇮🇹 788 112 10ms 3 Nov 2025 627th denkyuu1 788 112 10ms 16 days ago 631st dokutan 787 130 7ms 21 Jun 2024 632nd edsrzf 🇳🇿 787 133 1,370ms 26 Apr 2025 633rd LHLaurini 🇧🇷 787 141 69ms 17 Jul 2024 634th lynn 787 154 150ms 11 Mar 2022 634th The3gs 787 154 159ms 18 Aug 2023 636th SirBogman 🇺🇸 786 96 450ms 16 Jan 2024 637th DialFrost 🇸🇬 786 166 41ms 7 May 2025 638th MeWhenI 🇻🇦 785 137 2ms 12 Sep 2022 639th msbranicky 784 112 2ms 10 Oct 2023 640th DialFrost 🇸🇬 784 113 151ms 24 May 2025 First Prev 561–640 of 1,606 Next Last