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 160th snyderek 🇺🇸 902 122 58ms 20 Jul 2024 160th zygoloid 902 122 58ms 7 Aug 2024 163rd GrayJoKing 🇦🇺 901 64 5ms 17 Aug 2024 164th JayXon 🇺🇸 901 79 127ms 13 hours ago 165th ovs-code 🇩🇪 901 90 65ms 12 Sep 2024 165th error256 901 90 68ms 14 Feb 2025 165th primo-ppcg 🇹🇭 901 90 62ms 5 Apr 2025 165th sean-niemann 🇺🇸 901 90 64ms 14 May 2025 165th Steffan153 🇫🇮 901 90 66ms 20 days ago 170th Shanethegamer 🇺🇸 901 93 6ms 13 Nov 2023 170th DialFrost 🇸🇬 901 93 6ms 28 Jul 2024 170th sean-niemann 🇺🇸 901 93 5ms 19 Apr 2025 173rd btnlq 901 98 9ms 10 Jan 2022 173rd primo-ppcg 🇹🇭 901 98 11ms 13 Jan 2022 173rd m-tkach 🇺🇦 901 98 17ms 18 Jul 2023 173rd sean-niemann 🇺🇸 901 98 17ms 28 Jan 2025 177th canissimia 🇦🇶 900 74 31ms 13 Jul 2022 178th DialFrost 🇸🇬 900 119 370ms 24 Sep 2025 178th Yewzir 🇧🇪 900 119 582ms 24 Sep 2025 178th namelessiw 900 119 399ms 7 Oct 2025 181st jared-hughes 899 79 10ms 12 Jan 2022 181st ZakkkkAttackkkk 🇵🇭 899 79 10ms 9 Jun 2022 181st ovs-code 🇩🇪 899 79 10ms 29 Sep 2023 181st uttumuttu 🇫🇮 899 79 10ms 21 Dec 2023 181st neel11235813 899 79 9ms 25 Mar 2024 181st levinwinter 899 79 9ms 21 Oct 2025 181st JOrE20 899 79 8ms 15 days ago 181st pardouin 🇫🇷 899 79 2,254ms 13 hours ago 189th Lydxn 🇨🇦 899 84 462ms 16 Jan 2024 190th JayXon 🇺🇸 899 102 407ms 23 Jul 2025 190th edsrzf 🇳🇿 899 102 418ms 12 Sep 2025 192nd xnor-gate 899 125 143ms 11 Jan 2022 193rd JayXon 🇺🇸 899 148 288ms 11 Nov 2023 194th JayXon 🇺🇸 897 98 2ms 19 Feb 2024 194th sean-niemann 🇺🇸 897 98 2ms 19 Nov 2025 194th Steffan153 🇫🇮 897 98 2ms 19 hours ago 197th ovs-code 🇩🇪 894 85 82ms 27 May 2024 197th DialFrost 🇸🇬 894 85 79ms 22 Jun 2024 197th Steffan153 🇫🇮 894 85 80ms 15 Aug 2024 197th sean-niemann 🇺🇸 894 85 82ms 6 Jul 2025 201st nwellnhof 🇩🇪 893 149 287ms 23 Jun 2023 202nd AlephSquirrel 892 99 10ms 21 Jul 2023 202nd Seek64 🇩🇪 892 99 10ms 24 Sep 2024 202nd kg583 🇺🇸 892 99 11ms 30 Nov 2025 202nd jared-hughes 892 99 10ms 30 Nov 2025 202nd zacjl 892 99 12ms 17 hours ago 207th canissimia 🇦🇶 891 61 39ms 18 Jul 2022 208th Steffan153 🇫🇮 890 80 133ms 19 hours ago 209th Steffan153 🇫🇮 890 87 459ms 21 Aug 2024 210th GrayJoKing 🇦🇺 889 92 69ms 21 Jun 2024 210th JayXon 🇺🇸 889 92 74ms 26 hours ago 210th Steffan153 🇫🇮 889 92 73ms 19 hours ago 213th Steffan153 🇫🇮 889 115 8ms 6 hours ago 214th JayXon 🇺🇸 889 117 101ms 21 May 2023 215th janbehrens 🇩🇪 888 80 10ms 24 Nov 2022 215th DayDun 🇸🇪 888 80 10ms 22 Jan 2023 215th tayloia 🇬🇧 888 80 10ms 16 May 2023 215th voytxt 🇨🇿 888 80 9ms 4 Feb 2024 215th Salutations45 888 80 9ms 27 Nov 2024 215th emgordon154 888 80 10ms 16 Feb 2025 215th Lv0Sys 🇵🇱 888 80 10ms 6 days ago 222nd KasperKivimaeki 🇫🇮 888 124 439ms 30 Jul 2025 223rd clockworknazo 887 85 4ms 25 Mar 2023 223rd edsrzf 🇳🇿 887 85 4ms 18 Nov 2025 225th lifthrasiir 🇰🇷 886 35 2ms 29 Nov 2024 226th edsrzf 🇳🇿 886 92 5ms 24 Jul 2025 227th Lydxn 🇨🇦 885 86 108ms 26 Feb 2023 228th ScottHamper 885 121 484ms 30 Nov 2025 229th JayXon 🇺🇸 884 109 474ms 24 Jul 2024 230th hallvabo 🇳🇴 883 100 10ms 11 Jan 2022 230th xsot 🇸🇬 883 100 10ms 21 Jul 2023 230th inventshah 883 100 10ms 3 Aug 2023 230th StefanHabel 🇨🇦 883 100 10ms 5 Sep 2023 230th neel11235813 883 100 10ms 9 Nov 2023 230th MeWhenI 🇻🇦 883 100 10ms 7 Dec 2023 230th lynn 883 100 9ms 21 Jun 2024 230th duckyluuk 🇳🇱 883 100 10ms 21 Jun 2024 230th DialFrost 🇸🇬 883 100 10ms 28 Jun 2024 230th Mukundan314 883 100 10ms 30 Apr 2025 230th ryyyn 🇺🇸 883 100 10ms 28 Oct 2025 First Prev 161–240 of 1,612 Next Last