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 481st neel11235813 830 91 502ms 13 Mar 2024 481st kg583 🇺🇸 830 91 441ms 21 Mar 2024 481st bizy-coder 830 91 410ms 1 Apr 2024 481st MeWhenI 🇻🇦 830 91 489ms 24 May 2024 481st duckyluuk 🇳🇱 830 91 498ms 21 Jun 2024 481st AlephSquirrel 830 91 496ms 3 Jul 2024 481st CaedenHarper 🇨🇦 830 91 505ms 30 Nov 2025 488th Mandrzejy 🇵🇱 829 134 55ms 13 Sep 2024 489th Shanethegamer 🇺🇸 828 107 152ms 24 May 2025 490th GrayJoKing 🇦🇺 828 130 2ms 12 Sep 2022 491st CLOStrophobic 🇮🇹 827 123 8ms 21 Jan 2025 491st kg583 🇺🇸 827 123 8ms 20 Feb 2026 493rd quimey 825 107 13ms 7 Mar 2023 493rd fourth-bit 825 107 10ms 10 Jul 2024 493rd fuzzylojik-golf 🇻🇦 825 107 11ms 19 May 2025 493rd solisolu 825 107 12ms 25 Nov 2025 497th Shanethegamer 🇺🇸 825 112 1ms 20 Apr 2022 498th Steffan153 🇫🇮 825 151 37ms 23 days ago 499th primo-ppcg 🇹🇭 825 164 25ms 25 Jun 2022 500th error256 824 66 37ms 8 May 2025 501st annaproxy 824 94 429ms 19 Mar 2022 502nd GrayJoKing 🇦🇺 824 99 4ms 20 Sep 2023 503rd MeWhenI 🇻🇦 824 102 5ms 26 Nov 2023 504th m-tkach 🇺🇦 824 130 515ms 25 Sep 2025 505th Irratix 🇳🇱 823 135 412ms 14 May 2022 506th Frowny 822 53 32ms 11 Jan 2022 507th DialFrost 🇸🇬 822 286 140ms 22 Apr 2025 507th frankgraziano 822 286 651ms 31 Jan 2026 509th inventshah 821 92 557ms 21 Jan 2024 509th GolfingSuccess 🇬🇷 821 92 501ms 2 Mar 2024 511th Shanethegamer 🇺🇸 821 124 7ms 27 Aug 2024 512th Steffan153 🇫🇮 819 57 3ms 6 Jan 2023 512th Natanaelel 🇸🇪 819 57 4ms 13 May 2023 514th stefangimmillaro 819 87 2,551ms 24 Nov 2024 514th emgordon154 819 87 2,621ms 6 Mar 2025 516th DialFrost 🇸🇬 819 118 461ms 27 Nov 2024 517th DialFrost 🇸🇬 818 72 984ms 4 Sep 2025 518th prplz 🇦🇺 818 108 14ms 11 Jan 2022 518th galloj 🇨🇿 818 108 10ms 21 Sep 2022 518th TaserTheFox 🇺🇸 818 108 11ms 3 Apr 2023 518th jatloe 818 108 10ms 26 Aug 2024 518th cros107 🇦🇺 818 108 11ms 10 Aug 2025 523rd Yewzir 🇧🇪 818 113 1ms 29 Nov 2023 523rd drabart 🇵🇱 818 113 2ms 18 Dec 2023 525th btnlq 818 125 15ms 12 Jan 2022 526th sean-niemann 🇺🇸 818 163 335ms 30 Aug 2023 526th Yewzir 🇧🇪 818 163 325ms 7 Feb 2024 526th CaedenHarper 🇨🇦 818 163 326ms 2 Nov 2025 529th itsh01 817 87 12ms 13 Mar 2022 529th AlephSquirrel 817 87 13ms 15 Feb 2023 529th danielphilpottwork 817 87 12ms 20 Dec 2023 532nd Shanethegamer 🇺🇸 817 136 86ms 20 Apr 2022 533rd lynn 816 38 41ms 22 Jul 2022 533rd MeWhenI 🇻🇦 816 38 44ms 25 Aug 2022 533rd 5cw 🇺🇸 816 38 2ms 27 May 2024 533rd emgordon154 816 38 3ms 8 Mar 2026 537th janbehrens 🇩🇪 816 103 4ms 2 Jul 2023 538th plcc0 814 125 7ms 23 Mar 2025 539th GrayJoKing 🇦🇺 814 152 29ms 18 Jul 2023 539th m-tkach 🇺🇦 814 152 29ms 10 Feb 2026 541st scpchicken 🇵🇼 813 55 144ms 13 Mar 2022 542nd GrayJoKing 🇦🇺 813 113 401ms 24 Jul 2025 543rd Shanethegamer 🇺🇸 812 93 539ms 16 Jan 2024 543rd Yewzir 🇧🇪 812 93 525ms 22 Jun 2024 545th jotslo 🇬🇧 812 107 2ms 17 Jul 2022 546th error256 812 132 385ms 21 Nov 2025 547th janlelis 811 67 36ms 11 Jan 2022 547th stefangimmillaro 811 67 40ms 26 Dec 2024 549th chunes3 🇺🇸 811 100 70ms 15 Sep 2023 549th Natanaelel 🇸🇪 811 100 66ms 8 Dec 2023 551st m-tkach 🇺🇦 811 137 86ms 15 Jan 2022 551st sean-niemann 🇺🇸 811 137 91ms 3 Feb 2024 553rd kg583 🇺🇸 811 154 38ms 17 Nov 2025 554th ZakkkkAttackkkk 🇵🇭 810 109 11ms 23 Feb 2022 554th cefqrn 810 109 11ms 24 Dec 2022 554th AlexanderFair 810 109 11ms 11 Jul 2023 554th PixelSoftwareStudios 🇺🇸 810 109 11ms 6 Jul 2024 554th andrewjc2000 810 109 11ms 9 Mar 2025 554th tomh1012 810 109 11ms 4 Mar 2026 560th Mandrzejy 🇵🇱 810 114 1ms 13 Sep 2024 First Prev 481–560 of 1,646 Next Last