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 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 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 641st DialFrost 🇸🇬 784 113 115ms 24 May 2025 642nd MichalMarsalek 🇨🇿 784 117 414ms 21 Apr 2022 643rd sean-niemann 🇺🇸 783 118 1ms 3 Feb 2024 644th AlephSquirrel 783 130 6ms 21 Oct 2024 645th Yewzir 🇧🇪 783 135 7ms 16 Dec 2023 645th Maximizer02 783 135 7ms 24 Sep 2024 647th DialFrost 🇸🇬 783 241 1,410ms 18 Apr 2025 648th Skleni 782 99 439ms 6 Apr 2023 649th adamnielson42 🇺🇸 781 91 10ms 26 Apr 2023 649th luuumine 🇫🇷 781 91 10ms 12 Nov 2025 651st commandz0 🇺🇸 781 113 10ms 3 Nov 2022 651st jakobkordez 🇸🇮 781 113 10ms 13 Nov 2022 651st mossprescott 781 113 10ms 16 Jan 2023 651st SB-945 781 113 10ms 19 Aug 2023 651st davitf 781 113 11ms 30 Apr 2024 651st kbeat 🇰🇿 781 113 10ms 18 May 2025 657th LHLaurini 🇧🇷 781 141 61ms 17 Jul 2024 658th Shanethegamer 🇺🇸 780 104 69ms 4 Dec 2024 659th Shanethegamer 🇺🇸 780 161 41ms 13 Feb 2025 660th MeWhenI 🇻🇦 779 43 4ms 1 Mar 2025 661st fuzzylojik-golf 🇺🇸 779 98 453ms 6 Jul 2025 662nd JRaspass 🇬🇧 777 60 3ms 18 Jan 2023 663rd primo-ppcg 🇹🇭 777 118 373ms 9 Apr 2022 664th LHLaurini 🇧🇷 777 119 1ms 17 Jul 2024 664th solisolu 777 119 1ms 25 Nov 2025 666th primo-ppcg 🇹🇭 777 131 6ms 20 Jan 2023 667th denkyuu1 776 70 35ms 14 days ago 668th Shanethegamer 🇺🇸 776 76 402ms 12 Oct 2022 669th emgordon154 776 95 137ms 15 Nov 2024 670th call23re 776 112 2ms 12 Jan 2022 671st kmathis22 776 138 504ms 30 Oct 2025 672nd rak1507 🇬🇧 775 40 2ms 10 Jan 2022 672nd Frowny 775 40 2ms 13 Jan 2022 672nd jared-hughes 775 40 38ms 29 Jul 2022 672nd razetime 775 40 2ms 22 Aug 2022 676th stefangimmillaro 775 76 1,333ms 8 Jan 2023 676th MeWhenI 🇻🇦 775 76 1,213ms 10 May 2023 676th error256 775 76 1,384ms 14 Feb 2025 679th aonkeeper4 775 114 9ms 5 Jul 2022 679th frankgraziano 775 114 12ms 8 Jan 2023 679th m42km 775 114 10ms 22 Nov 2023 679th thienudomsrirungruang 775 114 17ms 14 May 2024 679th jtaxen 775 114 10ms 8 Jun 2024 679th CutSandstone 775 114 10ms 8 Jul 2024 685th Steffan153 🇫🇮 775 132 14ms 5 Jul 2024 686th DialFrost 🇸🇬 775 142 2ms 14 Sep 2024 687th strout 775 145 148ms 15 Aug 2022 688th andersk 🇺🇸 775 156 216ms 30 Oct 2022 688th emgordon154 775 156 220ms 14 Mar 2025 690th juliansiebert 🇩🇪 774 72 284ms 24 Jul 2022 691st MeWhenI 🇻🇦 773 130 41ms 30 Dec 2025 692nd maxpelic 🇺🇸 772 92 10ms 5 Jul 2022 692nd astdefu 772 92 10ms 10 Dec 2022 692nd two-bad 🇬🇧 772 92 10ms 25 Feb 2024 692nd KatieLG 🇬🇧 772 92 10ms 8 Jul 2024 696th Steffan153 🇫🇮 772 106 88ms 21 Jun 2024 697th Yewzir 🇧🇪 770 115 145ms 26 Dec 2023 698th Shanethegamer 🇺🇸 770 157 143ms 8 Oct 2022 699th primo-ppcg 🇹🇭 769 67 15ms 24 Jan 2022 700th MeWhenI 🇻🇦 768 96 148ms 25 Oct 2024 701st Shanethegamer 🇺🇸 768 99 85ms 12 Dec 2022 702nd jmerle 🇳🇱 768 115 10ms 22 Jan 2022 702nd PiterAnnema 768 115 17ms 23 Mar 2022 702nd AGoyet 768 115 10ms 29 Jun 2022 702nd Eilonlif 🇮🇱 768 115 9ms 11 Sep 2022 702nd IsmaelGSerrano 768 115 9ms 2 Nov 2022 702nd bobbysq 768 115 11ms 22 Jan 2023 702nd msbranicky 768 115 11ms 25 Jul 2023 702nd ArenaGrenade 768 115 10ms 19 Feb 2024 702nd NickTheEASDude 🇺🇸 768 115 11ms 15 May 2024 702nd dokutan 768 115 9ms 13 Aug 2024 702nd maxgodfrey2004 🇨🇦 768 115 10ms 8 Jan 2025 702nd Pyroan 768 115 10ms 21 Feb 2025 702nd chartung17 768 115 10ms 24 Mar 2025 715th CatsAreFluffy 766 57 47ms 9 Jan 2023 715th xsot 🇸🇬 766 57 53ms 2 Feb 2024 717th frankgraziano 766 130 6ms 10 days ago 718th MeWhenI 🇻🇦 766 138 8ms 9 May 2024 719th DialFrost 🇸🇬 765 71 34ms 26 Dec 2024 720th edsrzf 🇳🇿 765 107 80ms 28 Jun 2025 First Prev 641–720 of 1,611 Next Last