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 476th AlephSquirrel 830 91 469ms 3 Jul 2024 476th CaedenHarper 🇨🇦 830 91 437ms 30 Nov 2025 483rd Mandrzejy 🇵🇱 829 134 67ms 13 Sep 2024 484th rucin93 🇵🇱 828 86 138ms 19 days ago 485th Shanethegamer 🇺🇸 828 107 152ms 24 May 2025 486th GrayJoKing 🇦🇺 828 130 2ms 12 Sep 2022 487th CLOStrophobic 🇮🇹 827 123 8ms 21 Jan 2025 487th kg583 🇺🇸 827 123 8ms 20 Feb 2026 489th quimey 825 107 10ms 7 Mar 2023 489th fourth-bit 825 107 10ms 10 Jul 2024 489th fuzzylojik-golf 🇺🇸 825 107 10ms 19 May 2025 489th solisolu 825 107 10ms 25 Nov 2025 493rd Shanethegamer 🇺🇸 825 112 1ms 20 Apr 2022 494th Steffan153 🇫🇮 825 151 33ms 10 days ago 495th GrayJoKing 🇦🇺 824 99 4ms 20 Sep 2023 496th m-tkach 🇺🇦 824 130 535ms 25 Sep 2025 497th error256 823 66 37ms 8 May 2025 498th annaproxy 823 94 438ms 19 Mar 2022 499th MeWhenI 🇻🇦 823 102 5ms 26 Nov 2023 500th primo-ppcg 🇹🇭 823 164 25ms 25 Jun 2022 501st Frowny 822 53 32ms 11 Jan 2022 502nd Irratix 🇳🇱 822 135 443ms 14 May 2022 503rd DialFrost 🇸🇬 822 286 140ms 22 Apr 2025 503rd frankgraziano 822 286 651ms 31 Jan 2026 505th inventshah 821 92 474ms 21 Jan 2024 505th GolfingSuccess 🇬🇷 821 92 402ms 2 Mar 2024 507th Shanethegamer 🇺🇸 821 124 6ms 27 Aug 2024 508th Steffan153 🇫🇮 819 57 3ms 6 Jan 2023 508th Natanaelel 🇸🇪 819 57 4ms 13 May 2023 510th stefangimmillaro 818 87 2,551ms 24 Nov 2024 510th emgordon154 818 87 2,768ms 6 Mar 2025 512th prplz 🇦🇺 818 108 10ms 11 Jan 2022 512th galloj 🇨🇿 818 108 10ms 21 Sep 2022 512th TaserTheFox 🇺🇸 818 108 9ms 3 Apr 2023 512th jatloe 818 108 10ms 26 Aug 2024 512th cros107 🇦🇺 818 108 10ms 10 Aug 2025 517th Yewzir 🇧🇪 818 113 1ms 29 Nov 2023 517th drabart 🇵🇱 818 113 2ms 18 Dec 2023 519th btnlq 818 125 15ms 12 Jan 2022 520th sean-niemann 🇺🇸 817 163 298ms 30 Aug 2023 520th Yewzir 🇧🇪 817 163 288ms 7 Feb 2024 520th CaedenHarper 🇨🇦 817 163 288ms 2 Nov 2025 523rd emgordon154 817 181 1,625ms 22 Dec 2025 524th lynn 816 38 41ms 22 Jul 2022 524th MeWhenI 🇻🇦 816 38 44ms 25 Aug 2022 524th 5cw 🇺🇸 816 38 2ms 27 May 2024 524th emgordon154 816 38 3ms 25 days ago 528th DialFrost 🇸🇬 816 72 1,031ms 4 Sep 2025 529th itsh01 816 87 9ms 13 Mar 2022 529th AlephSquirrel 816 87 10ms 15 Feb 2023 529th danielphilpottwork 816 87 11ms 20 Dec 2023 532nd DialFrost 🇸🇬 816 118 461ms 27 Nov 2024 533rd Shanethegamer 🇺🇸 816 136 56ms 20 Apr 2022 534th janbehrens 🇩🇪 815 103 4ms 2 Jul 2023 535th plcc0 814 125 6ms 23 Mar 2025 536th GrayJoKing 🇦🇺 814 152 29ms 18 Jul 2023 536th m-tkach 🇺🇦 814 152 29ms 10 Feb 2026 538th scpchicken 🇵🇼 813 55 170ms 13 Mar 2022 539th Shanethegamer 🇺🇸 812 93 458ms 16 Jan 2024 539th Yewzir 🇧🇪 812 93 513ms 22 Jun 2024 541st jotslo 🇬🇧 812 107 2ms 17 Jul 2022 542nd janlelis 811 67 36ms 11 Jan 2022 542nd stefangimmillaro 811 67 40ms 26 Dec 2024 544th chunes3 🇺🇸 811 100 70ms 15 Sep 2023 544th Natanaelel 🇸🇪 811 100 70ms 8 Dec 2023 546th GrayJoKing 🇦🇺 811 113 401ms 24 Jul 2025 547th error256 811 132 385ms 21 Nov 2025 548th kg583 🇺🇸 811 154 38ms 17 Nov 2025 549th ZakkkkAttackkkk 🇵🇭 810 109 10ms 23 Feb 2022 549th cefqrn 810 109 10ms 24 Dec 2022 549th AlexanderFair 810 109 10ms 11 Jul 2023 549th PixelSoftwareStudios 🇺🇸 810 109 10ms 6 Jul 2024 549th andrewjc2000 810 109 9ms 9 Mar 2025 549th tomh1012 810 109 10ms 4 Mar 2026 555th Mandrzejy 🇵🇱 810 114 1ms 13 Sep 2024 555th AZTECCO 810 114 1ms 16 Sep 2025 557th m-tkach 🇺🇦 810 137 56ms 15 Jan 2022 557th sean-niemann 🇺🇸 810 137 58ms 3 Feb 2024 559th albanian-laundromat 809 133 3ms 22 Sep 2025 560th MeWhenI 🇻🇦 807 101 4ms 23 May 2023 First Prev 481–560 of 1,630 Next Last