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 479th bizy-coder 830 91 410ms 1 Apr 2024 479th MeWhenI 🇻🇦 830 91 489ms 24 May 2024 479th duckyluuk 🇳🇱 830 91 498ms 21 Jun 2024 479th AlephSquirrel 830 91 496ms 3 Jul 2024 479th CaedenHarper 🇨🇦 830 91 505ms 30 Nov 2025 486th Mandrzejy 🇵🇱 829 134 55ms 13 Sep 2024 487th rucin93 🇵🇱 828 86 145ms 26 days ago 488th Shanethegamer 🇺🇸 828 107 152ms 24 May 2025 489th GrayJoKing 🇦🇺 828 130 2ms 12 Sep 2022 490th CLOStrophobic 🇮🇹 827 123 8ms 21 Jan 2025 490th kg583 🇺🇸 827 123 8ms 20 Feb 2026 492nd quimey 825 107 13ms 7 Mar 2023 492nd fourth-bit 825 107 10ms 10 Jul 2024 492nd fuzzylojik-golf 🇺🇸 825 107 11ms 19 May 2025 492nd solisolu 825 107 12ms 25 Nov 2025 496th Shanethegamer 🇺🇸 825 112 1ms 20 Apr 2022 497th Steffan153 🇫🇮 825 151 32ms 17 days ago 498th GrayJoKing 🇦🇺 824 99 4ms 20 Sep 2023 499th m-tkach 🇺🇦 824 130 515ms 25 Sep 2025 500th error256 823 66 37ms 8 May 2025 501st annaproxy 823 94 429ms 19 Mar 2022 502nd MeWhenI 🇻🇦 823 102 5ms 26 Nov 2023 503rd primo-ppcg 🇹🇭 823 164 25ms 25 Jun 2022 504th Frowny 822 53 32ms 11 Jan 2022 505th Irratix 🇳🇱 822 135 412ms 14 May 2022 506th DialFrost 🇸🇬 822 286 140ms 22 Apr 2025 506th frankgraziano 822 286 651ms 31 Jan 2026 508th inventshah 821 92 557ms 21 Jan 2024 508th GolfingSuccess 🇬🇷 821 92 501ms 2 Mar 2024 510th Shanethegamer 🇺🇸 821 124 7ms 27 Aug 2024 511th emgordon154 820 181 1,625ms 22 Dec 2025 512th Steffan153 🇫🇮 819 57 3ms 6 Jan 2023 512th Natanaelel 🇸🇪 819 57 4ms 13 May 2023 514th stefangimmillaro 818 87 2,551ms 24 Nov 2024 514th emgordon154 818 87 2,621ms 6 Mar 2025 516th prplz 🇦🇺 818 108 14ms 11 Jan 2022 516th galloj 🇨🇿 818 108 10ms 21 Sep 2022 516th TaserTheFox 🇺🇸 818 108 11ms 3 Apr 2023 516th jatloe 818 108 10ms 26 Aug 2024 516th cros107 🇦🇺 818 108 11ms 10 Aug 2025 521st Yewzir 🇧🇪 818 113 1ms 29 Nov 2023 521st drabart 🇵🇱 818 113 2ms 18 Dec 2023 523rd btnlq 818 125 15ms 12 Jan 2022 524th sean-niemann 🇺🇸 817 163 335ms 30 Aug 2023 524th Yewzir 🇧🇪 817 163 325ms 7 Feb 2024 524th CaedenHarper 🇨🇦 817 163 326ms 2 Nov 2025 527th lynn 816 38 41ms 22 Jul 2022 527th MeWhenI 🇻🇦 816 38 44ms 25 Aug 2022 527th 5cw 🇺🇸 816 38 2ms 27 May 2024 527th emgordon154 816 38 3ms 8 Mar 2026 527th jusaka 816 38 3ms 21 hours ago 532nd DialFrost 🇸🇬 816 72 984ms 4 Sep 2025 533rd itsh01 816 87 12ms 13 Mar 2022 533rd AlephSquirrel 816 87 13ms 15 Feb 2023 533rd danielphilpottwork 816 87 12ms 20 Dec 2023 536th DialFrost 🇸🇬 816 118 461ms 27 Nov 2024 537th Shanethegamer 🇺🇸 816 136 86ms 20 Apr 2022 538th janbehrens 🇩🇪 815 103 4ms 2 Jul 2023 539th plcc0 814 125 7ms 23 Mar 2025 540th GrayJoKing 🇦🇺 814 152 29ms 18 Jul 2023 540th m-tkach 🇺🇦 814 152 29ms 10 Feb 2026 542nd scpchicken 🇵🇼 813 55 144ms 13 Mar 2022 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 janlelis 811 67 36ms 11 Jan 2022 546th stefangimmillaro 811 67 40ms 26 Dec 2024 548th chunes3 🇺🇸 811 100 70ms 15 Sep 2023 548th Natanaelel 🇸🇪 811 100 66ms 8 Dec 2023 550th GrayJoKing 🇦🇺 811 113 401ms 24 Jul 2025 551st error256 811 132 385ms 21 Nov 2025 552nd kg583 🇺🇸 811 154 38ms 17 Nov 2025 553rd ZakkkkAttackkkk 🇵🇭 810 109 11ms 23 Feb 2022 553rd cefqrn 810 109 11ms 24 Dec 2022 553rd AlexanderFair 810 109 11ms 11 Jul 2023 553rd PixelSoftwareStudios 🇺🇸 810 109 11ms 6 Jul 2024 553rd andrewjc2000 810 109 11ms 9 Mar 2025 553rd tomh1012 810 109 11ms 4 Mar 2026 559th Mandrzejy 🇵🇱 810 114 1ms 13 Sep 2024 559th AZTECCO 810 114 1ms 16 Sep 2025 First Prev 481–560 of 1,635 Next Last