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 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 Bytes Time Submitted 561st mtirado1 804 108 2ms 6 May 2023 562nd typeswitch-dev 🇵🇹 804 121 8ms 14 Aug 2023 563rd MeWhenI 🇻🇦 804 137 2ms 12 Sep 2022 564th scpchicken 🇵🇼 803 58 3ms 22 Feb 2023 565th btjones0 803 110 9ms 25 Jan 2022 565th adamnielson42 🇺🇸 803 110 11ms 25 Apr 2023 565th sultan 803 110 10ms 24 Feb 2024 565th fgrosshans 🇫🇷 803 110 10ms 16 Jul 2024 565th edsrzf 🇳🇿 803 110 10ms 30 Jul 2025 565th InigoK 🇺🇸 803 110 9ms 22 Sep 2025 565th albanian-laundromat 803 110 10ms 7 Nov 2025 565th vhoulbreque 🇫🇷 803 110 11ms 25 Nov 2025 573rd madex 🇩🇪 803 115 2ms 10 Apr 2022 573rd FragmentedCurve 803 115 2ms 22 Nov 2023 573rd mathisfun271 803 115 2ms 5 Feb 2024 576th m-tkach 🇺🇦 803 137 60ms 15 Jan 2022 576th sean-niemann 🇺🇸 803 137 60ms 3 Feb 2024 578th Shanethegamer 🇺🇸 803 168 25ms 28 Apr 2022 579th akshatj27 🇦🇶 799 68 40ms 10 Jan 2022 579th SirBogman 🇺🇸 799 68 38ms 19 May 2022 579th Shanethegamer 🇺🇸 799 68 37ms 27 May 2022 579th Haksell 🇦🇶 799 68 40ms 23 Feb 2023 579th anter69 🇭🇺 799 68 39ms 20 Nov 2023 584th kg583 🇺🇸 799 102 4ms 30 Nov 2025 585th Yewzir 🇧🇪 799 185 1,707ms 21 May 2024 586th igmcdowell 798 89 10ms 24 Feb 2022 586th inventshah 798 89 10ms 21 Jun 2022 586th olleicua 🇺🇸 798 89 10ms 3 Feb 2024 586th kpal81xd 798 89 11ms 15 Sep 2024 590th Shanethegamer 🇺🇸 797 115 342ms 21 Apr 2022 591st prplz 🇦🇺 796 70 256ms 19 Jan 2022 591st SirBogman 🇺🇸 796 70 255ms 19 May 2022 593rd SirBogman 🇺🇸 796 96 480ms 16 Jan 2024 594th neihousaigaai 796 111 11ms 11 Jan 2022 594th knutae 🇳🇴 796 111 9ms 18 Jan 2022 594th rschwa6308 🇺🇸 796 111 11ms 22 Mar 2023 594th zbreit 🇺🇸 796 111 10ms 22 Mar 2023 594th plcc0 796 111 11ms 3 Mar 2025 594th emgordon154 796 111 11ms 25 Mar 2025 594th BREMAUCY 🇫🇷 796 111 10ms 15 Apr 2025 594th now4est 🇯🇵 796 111 10ms 25 Sep 2025 602nd MeWhenI 🇻🇦 796 116 2ms 5 Jul 2024 603rd stefangimmillaro 796 152 152ms 28 Oct 2023 604th SirBogman 🇺🇸 795 39 42ms 4 Oct 2022 605th CaedenHarper 🇨🇦 795 78 1,096ms 30 Sep 2025 606th Salutations45 792 66 1ms 2 Jan 2025 607th KrausRaus 🇺🇸 791 106 4ms 11 Nov 2023 608th MeWhenI 🇻🇦 791 112 144ms 4 Aug 2023 609th sean-niemann 🇺🇸 791 127 40ms 1 Dec 2023 610th ovs-code 🇩🇪 791 153 229ms 21 Jun 2023 611th GrayJoKing 🇦🇺 790 59 3ms 14 Jan 2022 611th Shanethegamer 🇺🇸 790 59 3ms 20 Jun 2022 613th tomh1012 790 98 419ms 31 Jan 2022 613th pkim 790 98 453ms 6 Apr 2023 613th danielxbauer 790 98 428ms 6 Apr 2023 613th meinsiedler 790 98 442ms 6 Apr 2023 613th postie77 790 98 448ms 8 May 2023 618th weliveinhell 🇭🇹 789 90 9ms 11 Jan 2024 619th m-tkach 🇺🇦 789 117 2ms 11 Jan 2022 619th prestosilver 🇺🇸 789 117 2ms 16 Dec 2025 621st 4hg 🇺🇸 788 69 43ms 30 Nov 2022 621st Andriamanitra 🇫🇮 788 69 42ms 17 Apr 2023 623rd guilhem-roy 🇫🇷 788 112 9ms 5 Jun 2022 623rd ahmetdemirag 🇨🇾 788 112 11ms 30 Jun 2024 623rd CommandLeo 🇮🇹 788 112 10ms 3 Nov 2025 626th emgordon154 787 95 139ms 15 Nov 2024 627th lifthrasiir 🇰🇷 787 97 566ms 2 Dec 2024 628th edsrzf 🇳🇿 787 133 1,370ms 26 Apr 2025 629th DialFrost 🇸🇬 786 166 41ms 7 May 2025 630th dokutan 785 79 1,002ms 8 Sep 2025 631st lynn 785 154 154ms 11 Mar 2022 631st The3gs 785 154 171ms 18 Aug 2023 633rd msbranicky 784 112 2ms 10 Oct 2023 634th DialFrost 🇸🇬 784 113 115ms 24 May 2025 635th MichalMarsalek 🇨🇿 784 117 360ms 21 Apr 2022 636th adyache 🇺🇸 783 92 8ms 2 Aug 2023 637th sean-niemann 🇺🇸 783 118 2ms 3 Feb 2024 638th AlephSquirrel 783 130 6ms 21 Oct 2024 639th DialFrost 🇸🇬 783 241 1,438ms 18 Apr 2025 640th Skleni 782 99 439ms 6 Apr 2023 First Prev 561–640 of 1,596 Next Last