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 Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 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 ArkScript 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 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 ArkScript 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 Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 161st GrayJoKing 🇦🇺 901 64 5ms 17 Aug 2024 162nd Steffan153 🇫🇮 901 80 119ms 2 hours ago 163rd ovs-code 🇩🇪 901 90 65ms 12 Sep 2024 163rd error256 901 90 68ms 14 Feb 2025 163rd primo-ppcg 🇹🇭 901 90 62ms 5 Apr 2025 163rd sean-niemann 🇺🇸 901 90 64ms 14 May 2025 163rd Steffan153 🇫🇮 901 90 66ms 19 days ago 168th Shanethegamer 🇺🇸 901 93 6ms 13 Nov 2023 168th DialFrost 🇸🇬 901 93 6ms 28 Jul 2024 168th sean-niemann 🇺🇸 901 93 5ms 19 Apr 2025 171st btnlq 901 98 9ms 10 Jan 2022 171st primo-ppcg 🇹🇭 901 98 11ms 13 Jan 2022 171st m-tkach 🇺🇦 901 98 17ms 18 Jul 2023 171st sean-niemann 🇺🇸 901 98 17ms 28 Jan 2025 175th canissimia 🇦🇶 900 74 31ms 13 Jul 2022 176th DialFrost 🇸🇬 900 119 370ms 24 Sep 2025 176th Yewzir 🇧🇪 900 119 582ms 24 Sep 2025 176th namelessiw 900 119 399ms 7 Oct 2025 179th jared-hughes 899 79 10ms 12 Jan 2022 179th ZakkkkAttackkkk 🇵🇭 899 79 10ms 9 Jun 2022 179th ovs-code 🇩🇪 899 79 10ms 29 Sep 2023 179th uttumuttu 🇫🇮 899 79 10ms 21 Dec 2023 179th neel11235813 899 79 9ms 25 Mar 2024 179th levinwinter 899 79 9ms 21 Oct 2025 179th JOrE20 899 79 8ms 14 days ago 186th Lydxn 🇨🇦 899 84 462ms 16 Jan 2024 187th JayXon 🇺🇸 899 102 407ms 23 Jul 2025 187th edsrzf 🇳🇿 899 102 418ms 12 Sep 2025 189th xnor-gate 899 125 143ms 11 Jan 2022 190th JayXon 🇺🇸 899 148 288ms 11 Nov 2023 191st JayXon 🇺🇸 897 98 2ms 19 Feb 2024 191st sean-niemann 🇺🇸 897 98 2ms 19 Nov 2025 191st Steffan153 🇫🇮 897 98 2ms 2 hours ago 194th ovs-code 🇩🇪 894 85 82ms 27 May 2024 194th DialFrost 🇸🇬 894 85 79ms 22 Jun 2024 194th Steffan153 🇫🇮 894 85 80ms 15 Aug 2024 194th sean-niemann 🇺🇸 894 85 82ms 6 Jul 2025 198th nwellnhof 🇩🇪 893 149 287ms 23 Jun 2023 199th AlephSquirrel 892 99 10ms 21 Jul 2023 199th Seek64 🇩🇪 892 99 10ms 24 Sep 2024 199th kg583 🇺🇸 892 99 10ms 30 Nov 2025 199th jared-hughes 892 99 10ms 30 Nov 2025 199th zacjl 892 99 12ms 24 mins ago 204th JayXon 🇺🇸 892 126 122ms 22 Jun 2024 205th canissimia 🇦🇶 891 61 39ms 18 Jul 2022 206th Steffan153 🇫🇮 890 87 459ms 21 Aug 2024 207th GrayJoKing 🇦🇺 889 92 69ms 21 Jun 2024 207th JayXon 🇺🇸 889 92 74ms 9 hours ago 207th Steffan153 🇫🇮 889 92 73ms 2 hours ago 210th JayXon 🇺🇸 889 117 101ms 21 May 2023 211th janbehrens 🇩🇪 888 80 10ms 24 Nov 2022 211th DayDun 🇸🇪 888 80 10ms 22 Jan 2023 211th tayloia 🇬🇧 888 80 10ms 16 May 2023 211th voytxt 🇨🇿 888 80 9ms 4 Feb 2024 211th Salutations45 888 80 9ms 27 Nov 2024 211th emgordon154 888 80 10ms 16 Feb 2025 211th Lv0Sys 🇵🇱 888 80 10ms 5 days ago 211th pardouin 🇫🇷 888 80 2,206ms 3 hours ago 219th edsrzf 🇳🇿 888 119 8ms 2 Mar 2025 219th kg583 🇺🇸 888 119 7ms 22 days ago 221st KasperKivimaeki 🇫🇮 888 124 439ms 30 Jul 2025 222nd clockworknazo 887 85 4ms 25 Mar 2023 222nd edsrzf 🇳🇿 887 85 4ms 18 Nov 2025 224th lifthrasiir 🇰🇷 886 35 2ms 29 Nov 2024 225th edsrzf 🇳🇿 886 92 5ms 24 Jul 2025 226th Lydxn 🇨🇦 885 86 108ms 26 Feb 2023 227th ScottHamper 885 121 484ms 30 Nov 2025 228th JayXon 🇺🇸 884 109 474ms 24 Jul 2024 229th hallvabo 🇳🇴 883 100 10ms 11 Jan 2022 229th xsot 🇸🇬 883 100 10ms 21 Jul 2023 229th inventshah 883 100 10ms 3 Aug 2023 229th StefanHabel 🇨🇦 883 100 10ms 5 Sep 2023 229th neel11235813 883 100 10ms 9 Nov 2023 229th MeWhenI 🇻🇦 883 100 10ms 7 Dec 2023 229th lynn 883 100 9ms 21 Jun 2024 229th duckyluuk 🇳🇱 883 100 10ms 21 Jun 2024 229th DialFrost 🇸🇬 883 100 10ms 28 Jun 2024 229th Mukundan314 883 100 10ms 30 Apr 2025 229th ryyyn 🇺🇸 883 100 10ms 28 Oct 2025 229th CaedenHarper 🇨🇦 883 100 10ms 30 Nov 2025 First Prev 161–240 of 1,611 Next Last