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 Alphabetic Numbers 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 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 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 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 481st Shanethegamer 🇺🇸 828 107 152ms 24 May 2025 482nd GrayJoKing 🇦🇺 828 130 2ms 12 Sep 2022 483rd Mandrzejy 🇵🇱 828 134 64ms 13 Sep 2024 484th CLOStrophobic 🇮🇹 827 123 8ms 21 Jan 2025 484th kg583 🇺🇸 827 123 8ms 20 Feb 2026 486th quimey 825 107 10ms 7 Mar 2023 486th fourth-bit 825 107 10ms 10 Jul 2024 486th fuzzylojik-golf 🇺🇸 825 107 10ms 19 May 2025 486th solisolu 825 107 10ms 25 Nov 2025 490th Shanethegamer 🇺🇸 825 112 1ms 20 Apr 2022 491st GrayJoKing 🇦🇺 824 99 4ms 20 Sep 2023 492nd m-tkach 🇺🇦 824 130 535ms 25 Sep 2025 493rd error256 823 66 37ms 8 May 2025 494th annaproxy 823 94 438ms 19 Mar 2022 495th MeWhenI 🇻🇦 823 102 5ms 26 Nov 2023 496th primo-ppcg 🇹🇭 823 164 25ms 25 Jun 2022 497th Frowny 822 53 32ms 11 Jan 2022 498th Irratix 🇳🇱 822 135 460ms 14 May 2022 499th DialFrost 🇸🇬 822 286 140ms 22 Apr 2025 499th frankgraziano 822 286 651ms 31 Jan 2026 501st inventshah 821 92 474ms 21 Jan 2024 501st GolfingSuccess 🇬🇷 821 92 402ms 2 Mar 2024 503rd Shanethegamer 🇺🇸 821 124 6ms 27 Aug 2024 504th Steffan153 🇫🇮 819 57 3ms 6 Jan 2023 504th Natanaelel 🇸🇪 819 57 4ms 13 May 2023 506th stefangimmillaro 818 87 2,700ms 24 Nov 2024 506th emgordon154 818 87 2,768ms 6 Mar 2025 508th prplz 🇦🇺 818 108 10ms 11 Jan 2022 508th galloj 🇨🇿 818 108 10ms 21 Sep 2022 508th TaserTheFox 🇺🇸 818 108 9ms 3 Apr 2023 508th jatloe 818 108 10ms 26 Aug 2024 508th cros107 🇦🇺 818 108 10ms 10 Aug 2025 513th btnlq 818 125 15ms 12 Jan 2022 514th Yewzir 🇧🇪 817 113 1ms 29 Nov 2023 514th drabart 🇵🇱 817 113 2ms 18 Dec 2023 516th sean-niemann 🇺🇸 817 163 298ms 30 Aug 2023 516th Yewzir 🇧🇪 817 163 288ms 7 Feb 2024 516th CaedenHarper 🇨🇦 817 163 288ms 2 Nov 2025 519th emgordon154 817 181 1,625ms 22 Dec 2025 520th lynn 816 38 41ms 22 Jul 2022 520th MeWhenI 🇻🇦 816 38 44ms 25 Aug 2022 520th 5cw 🇺🇸 816 38 2ms 27 May 2024 520th emgordon154 816 38 3ms 14 days ago 524th DialFrost 🇸🇬 816 72 755ms 4 Sep 2025 525th itsh01 816 87 11ms 13 Mar 2022 525th AlephSquirrel 816 87 16ms 15 Feb 2023 525th danielphilpottwork 816 87 10ms 20 Dec 2023 528th DialFrost 🇸🇬 816 118 461ms 27 Nov 2024 529th Shanethegamer 🇺🇸 816 136 62ms 20 Apr 2022 530th kg583 🇺🇸 816 154 38ms 17 Nov 2025 531st janbehrens 🇩🇪 815 103 4ms 2 Jul 2023 532nd plcc0 814 125 6ms 23 Mar 2025 533rd scpchicken 🇵🇼 813 55 135ms 13 Mar 2022 534th Shanethegamer 🇺🇸 812 93 458ms 16 Jan 2024 534th Yewzir 🇧🇪 812 93 513ms 22 Jun 2024 536th jotslo 🇬🇧 812 107 2ms 17 Jul 2022 537th janlelis 811 67 36ms 11 Jan 2022 537th stefangimmillaro 811 67 40ms 26 Dec 2024 539th chunes3 🇺🇸 811 100 70ms 15 Sep 2023 539th Natanaelel 🇸🇪 811 100 70ms 8 Dec 2023 541st GrayJoKing 🇦🇺 811 113 401ms 24 Jul 2025 542nd error256 811 132 385ms 21 Nov 2025 543rd Steffan153 🇫🇮 811 152 75ms 14 hours ago 544th ZakkkkAttackkkk 🇵🇭 810 109 10ms 23 Feb 2022 544th cefqrn 810 109 10ms 24 Dec 2022 544th AlexanderFair 810 109 10ms 11 Jul 2023 544th PixelSoftwareStudios 🇺🇸 810 109 10ms 6 Jul 2024 544th andrewjc2000 810 109 9ms 9 Mar 2025 544th tomh1012 810 109 10ms 18 days ago 550th Mandrzejy 🇵🇱 810 114 1ms 13 Sep 2024 550th AZTECCO 810 114 1ms 16 Sep 2025 552nd m-tkach 🇺🇦 810 137 62ms 15 Jan 2022 552nd sean-niemann 🇺🇸 810 137 60ms 3 Feb 2024 554th GrayJoKing 🇦🇺 810 152 29ms 18 Jul 2023 554th m-tkach 🇺🇦 810 152 29ms 10 Feb 2026 556th albanian-laundromat 809 133 3ms 22 Sep 2025 557th MeWhenI 🇻🇦 807 101 4ms 23 May 2023 558th ScottHamper 806 96 437ms 26 Feb 2022 558th stefangimmillaro 806 96 419ms 5 Jan 2023 558th bojernico 806 96 449ms 6 Apr 2023 First Prev 481–560 of 1,617 Next Last