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 Gray Code Decoder Gray Code Encoder 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 Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 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 ArkScript 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 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 Gray Code Decoder Gray Code Encoder 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 Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 478th MeWhenI 🇻🇦 830 91 436ms 24 May 2024 478th duckyluuk 🇳🇱 830 91 372ms 21 Jun 2024 478th AlephSquirrel 830 91 466ms 3 Jul 2024 478th CaedenHarper 🇨🇦 830 91 437ms 30 Nov 2025 485th Mandrzejy 🇵🇱 829 134 62ms 13 Sep 2024 486th rucin93 🇵🇱 828 86 138ms 25 days ago 487th Shanethegamer 🇺🇸 828 107 152ms 24 May 2025 488th GrayJoKing 🇦🇺 828 130 2ms 12 Sep 2022 489th CLOStrophobic 🇮🇹 827 123 11ms 21 Jan 2025 489th kg583 🇺🇸 827 123 11ms 20 Feb 2026 491st quimey 825 107 10ms 7 Mar 2023 491st fourth-bit 825 107 10ms 10 Jul 2024 491st fuzzylojik-golf 🇺🇸 825 107 10ms 19 May 2025 491st solisolu 825 107 10ms 25 Nov 2025 495th Shanethegamer 🇺🇸 825 112 1ms 20 Apr 2022 496th Steffan153 🇫🇮 825 151 33ms 16 days ago 497th GrayJoKing 🇦🇺 824 99 4ms 20 Sep 2023 498th m-tkach 🇺🇦 824 130 535ms 25 Sep 2025 499th error256 823 66 37ms 8 May 2025 500th annaproxy 823 94 438ms 19 Mar 2022 501st MeWhenI 🇻🇦 823 102 5ms 26 Nov 2023 502nd primo-ppcg 🇹🇭 823 164 25ms 25 Jun 2022 503rd Frowny 822 53 32ms 11 Jan 2022 504th Irratix 🇳🇱 822 135 436ms 14 May 2022 505th DialFrost 🇸🇬 822 286 140ms 22 Apr 2025 505th frankgraziano 822 286 651ms 31 Jan 2026 507th inventshah 821 92 474ms 21 Jan 2024 507th GolfingSuccess 🇬🇷 821 92 402ms 2 Mar 2024 509th Shanethegamer 🇺🇸 821 124 7ms 27 Aug 2024 510th emgordon154 820 181 1,625ms 22 Dec 2025 511th Steffan153 🇫🇮 819 57 3ms 6 Jan 2023 511th Natanaelel 🇸🇪 819 57 4ms 13 May 2023 513th stefangimmillaro 818 87 2,551ms 24 Nov 2024 513th emgordon154 818 87 2,709ms 6 Mar 2025 515th prplz 🇦🇺 818 108 10ms 11 Jan 2022 515th galloj 🇨🇿 818 108 10ms 21 Sep 2022 515th TaserTheFox 🇺🇸 818 108 9ms 3 Apr 2023 515th jatloe 818 108 10ms 26 Aug 2024 515th cros107 🇦🇺 818 108 10ms 10 Aug 2025 520th Yewzir 🇧🇪 818 113 1ms 29 Nov 2023 520th drabart 🇵🇱 818 113 2ms 18 Dec 2023 522nd btnlq 818 125 15ms 12 Jan 2022 523rd sean-niemann 🇺🇸 817 163 298ms 30 Aug 2023 523rd Yewzir 🇧🇪 817 163 288ms 7 Feb 2024 523rd CaedenHarper 🇨🇦 817 163 288ms 2 Nov 2025 526th lynn 816 38 41ms 22 Jul 2022 526th MeWhenI 🇻🇦 816 38 44ms 25 Aug 2022 526th 5cw 🇺🇸 816 38 2ms 27 May 2024 526th emgordon154 816 38 3ms 8 Mar 2026 530th DialFrost 🇸🇬 816 72 984ms 4 Sep 2025 531st itsh01 816 87 9ms 13 Mar 2022 531st AlephSquirrel 816 87 9ms 15 Feb 2023 531st danielphilpottwork 816 87 10ms 20 Dec 2023 534th DialFrost 🇸🇬 816 118 461ms 27 Nov 2024 535th Shanethegamer 🇺🇸 816 136 56ms 20 Apr 2022 536th janbehrens 🇩🇪 815 103 4ms 2 Jul 2023 537th plcc0 814 125 7ms 23 Mar 2025 538th GrayJoKing 🇦🇺 814 152 29ms 18 Jul 2023 538th m-tkach 🇺🇦 814 152 29ms 10 Feb 2026 540th scpchicken 🇵🇼 813 55 159ms 13 Mar 2022 541st Shanethegamer 🇺🇸 812 93 458ms 16 Jan 2024 541st Yewzir 🇧🇪 812 93 513ms 22 Jun 2024 543rd jotslo 🇬🇧 812 107 2ms 17 Jul 2022 544th janlelis 811 67 36ms 11 Jan 2022 544th stefangimmillaro 811 67 40ms 26 Dec 2024 546th chunes3 🇺🇸 811 100 70ms 15 Sep 2023 546th Natanaelel 🇸🇪 811 100 70ms 8 Dec 2023 548th GrayJoKing 🇦🇺 811 113 401ms 24 Jul 2025 549th error256 811 132 385ms 21 Nov 2025 550th kg583 🇺🇸 811 154 38ms 17 Nov 2025 551st ZakkkkAttackkkk 🇵🇭 810 109 10ms 23 Feb 2022 551st cefqrn 810 109 10ms 24 Dec 2022 551st AlexanderFair 810 109 10ms 11 Jul 2023 551st PixelSoftwareStudios 🇺🇸 810 109 10ms 6 Jul 2024 551st andrewjc2000 810 109 9ms 9 Mar 2025 551st tomh1012 810 109 10ms 4 Mar 2026 557th Mandrzejy 🇵🇱 810 114 1ms 13 Sep 2024 557th AZTECCO 810 114 1ms 16 Sep 2025 559th m-tkach 🇺🇦 810 137 56ms 15 Jan 2022 559th sean-niemann 🇺🇸 810 137 58ms 3 Feb 2024 First Prev 481–560 of 1,634 Next Last