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 emgordon154 805 125 7ms 7 days ago 562nd h3ra993huskp 🇯🇵 805 133 496ms 30 Nov 2025 563rd scpchicken 🇵🇼 804 58 3ms 22 Feb 2023 563rd blaztoma 🇱🇹 804 58 4ms 3 days ago 565th mtirado1 804 108 2ms 6 May 2023 566th typeswitch-dev 🇵🇹 804 121 8ms 14 Aug 2023 567th Babafaba 803 94 475ms 28 Nov 2025 567th snoozingnewt 🇨🇦 803 94 497ms 21 days ago 569th btjones0 803 110 9ms 25 Jan 2022 569th adamnielson42 🇺🇸 803 110 10ms 25 Apr 2023 569th sultan 803 110 10ms 24 Feb 2024 569th fgrosshans 🇫🇷 803 110 10ms 16 Jul 2024 569th InigoK 🇺🇸 803 110 9ms 22 Sep 2025 569th albanian-laundromat 803 110 10ms 7 Nov 2025 569th vhoulbreque 🇫🇷 803 110 10ms 25 Nov 2025 576th madex 🇩🇪 803 115 2ms 10 Apr 2022 576th FragmentedCurve 803 115 2ms 22 Nov 2023 576th mathisfun271 803 115 2ms 5 Feb 2024 579th Shanethegamer 🇺🇸 803 168 25ms 28 Apr 2022 580th Shanethegamer 🇺🇸 800 89 133ms 8 Jan 2025 580th emplv 🇱🇻 800 89 135ms 28 Mar 2025 580th ovs-code 🇩🇪 800 89 139ms 17 Apr 2025 583rd akshatj27 🇦🇶 799 68 37ms 10 Jan 2022 583rd SirBogman 🇺🇸 799 68 38ms 19 May 2022 583rd Shanethegamer 🇺🇸 799 68 37ms 27 May 2022 583rd Haksell 🇦🇶 799 68 37ms 23 Feb 2023 583rd anter69 🇭🇺 799 68 38ms 20 Nov 2023 588th Yewzir 🇧🇪 799 185 1,707ms 21 May 2024 589th igmcdowell 798 89 11ms 24 Feb 2022 589th inventshah 798 89 12ms 21 Jun 2022 589th olleicua 🇺🇸 798 89 14ms 3 Feb 2024 589th kpal81xd 798 89 11ms 15 Sep 2024 593rd adyache 🇺🇸 798 92 9ms 2 Aug 2023 594th Shanethegamer 🇺🇸 797 115 374ms 21 Apr 2022 595th stefangimmillaro 797 152 147ms 28 Oct 2023 596th neihousaigaai 796 111 10ms 11 Jan 2022 596th knutae 🇳🇴 796 111 9ms 18 Jan 2022 596th rschwa6308 🇺🇸 796 111 10ms 22 Mar 2023 596th zbreit 🇺🇸 796 111 9ms 22 Mar 2023 596th plcc0 796 111 10ms 3 Mar 2025 596th emgordon154 796 111 10ms 25 Mar 2025 596th BREMAUCY 🇫🇷 796 111 10ms 15 Apr 2025 596th now4est 🇯🇵 796 111 10ms 25 Sep 2025 604th MeWhenI 🇻🇦 796 116 2ms 5 Jul 2024 605th SirBogman 🇺🇸 795 39 42ms 4 Oct 2022 606th prplz 🇦🇺 795 70 297ms 19 Jan 2022 606th SirBogman 🇺🇸 795 70 311ms 19 May 2022 608th error256 794 74 742ms 13 Feb 2026 609th Salutations45 792 66 2ms 2 Jan 2025 610th ovs-code 🇩🇪 792 153 232ms 21 Jun 2023 611th GrayJoKing 🇦🇺 791 59 4ms 14 Jan 2022 611th Shanethegamer 🇺🇸 791 59 3ms 20 Jun 2022 613th DialFrost 🇸🇬 791 90 131ms 3 Nov 2024 614th KrausRaus 🇺🇸 791 106 7ms 11 Nov 2023 615th MeWhenI 🇻🇦 791 112 199ms 4 Aug 2023 616th sean-niemann 🇺🇸 791 127 40ms 1 Dec 2023 617th tomh1012 790 98 513ms 31 Jan 2022 617th pkim 790 98 571ms 6 Apr 2023 617th danielxbauer 790 98 503ms 6 Apr 2023 617th meinsiedler 790 98 532ms 6 Apr 2023 617th postie77 790 98 525ms 8 May 2023 622nd weliveinhell 🇭🇹 789 90 10ms 11 Jan 2024 622nd Shanethegamer 🇺🇸 789 90 2,336ms 28 Oct 2024 624th m-tkach 🇺🇦 789 117 1ms 11 Jan 2022 624th prestosilver 🇺🇸 789 117 2ms 16 Dec 2025 626th 4hg 🇺🇸 788 69 35ms 30 Nov 2022 626th Andriamanitra 🇫🇮 788 69 36ms 17 Apr 2023 628th guilhem-roy 🇫🇷 788 112 9ms 5 Jun 2022 628th ahmetdemirag 🇨🇾 788 112 10ms 30 Jun 2024 628th CommandLeo 🇮🇹 788 112 10ms 3 Nov 2025 628th denkyuu1 788 112 10ms 18 days ago 632nd dokutan 787 130 7ms 21 Jun 2024 633rd edsrzf 🇳🇿 787 133 1,420ms 26 Apr 2025 634th LHLaurini 🇧🇷 787 141 69ms 17 Jul 2024 635th lynn 787 154 150ms 11 Mar 2022 635th The3gs 787 154 159ms 18 Aug 2023 637th SirBogman 🇺🇸 786 96 450ms 16 Jan 2024 638th DialFrost 🇸🇬 786 166 41ms 7 May 2025 639th MeWhenI 🇻🇦 785 137 2ms 12 Sep 2022 640th msbranicky 784 112 2ms 10 Oct 2023 First Prev 561–640 of 1,609 Next Last