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 edsrzf 🇳🇿 904 65 759ms 7 days ago 160th sean-niemann 🇺🇸 904 65 873ms 7 days ago 163rd JayXon 🇺🇸 904 134 157ms 1 Nov 2025 163rd kumavale 904 134 150ms 1 Nov 2025 165th GrayJoKing 🇦🇺 901 64 5ms 17 Aug 2024 166th ovs-code 🇩🇪 901 90 65ms 12 Sep 2024 166th error256 901 90 68ms 14 Feb 2025 166th primo-ppcg 🇹🇭 901 90 62ms 5 Apr 2025 166th sean-niemann 🇺🇸 901 90 64ms 14 May 2025 166th Steffan153 🇫🇮 901 90 66ms 26 days ago 171st Shanethegamer 🇺🇸 901 93 6ms 13 Nov 2023 171st DialFrost 🇸🇬 901 93 6ms 28 Jul 2024 171st sean-niemann 🇺🇸 901 93 5ms 19 Apr 2025 174th btnlq 901 98 9ms 10 Jan 2022 174th primo-ppcg 🇹🇭 901 98 10ms 13 Jan 2022 174th m-tkach 🇺🇦 901 98 17ms 18 Jul 2023 174th sean-niemann 🇺🇸 901 98 17ms 28 Jan 2025 178th canissimia 🇦🇶 900 74 31ms 13 Jul 2022 179th DialFrost 🇸🇬 900 119 370ms 24 Sep 2025 179th Yewzir 🇧🇪 900 119 504ms 24 Sep 2025 179th namelessiw 900 119 399ms 7 Oct 2025 182nd jared-hughes 899 79 12ms 12 Jan 2022 182nd ZakkkkAttackkkk 🇵🇭 899 79 11ms 9 Jun 2022 182nd ovs-code 🇩🇪 899 79 10ms 29 Sep 2023 182nd uttumuttu 🇫🇮 899 79 11ms 21 Dec 2023 182nd neel11235813 899 79 10ms 25 Mar 2024 182nd levinwinter 899 79 11ms 21 Oct 2025 182nd JOrE20 899 79 11ms 21 days ago 182nd JayXon 🇺🇸 899 79 143ms 7 days ago 182nd pardouin 🇫🇷 899 79 2,208ms 7 days ago 191st Lydxn 🇨🇦 899 84 462ms 16 Jan 2024 192nd JayXon 🇺🇸 899 102 407ms 23 Jul 2025 192nd edsrzf 🇳🇿 899 102 418ms 12 Sep 2025 194th xnor-gate 899 125 143ms 11 Jan 2022 195th JayXon 🇺🇸 899 148 296ms 11 Nov 2023 196th JayXon 🇺🇸 897 98 2ms 19 Feb 2024 196th sean-niemann 🇺🇸 897 98 2ms 19 Nov 2025 196th Steffan153 🇫🇮 897 98 2ms 7 days ago 199th KasperKivimaeki 🇫🇮 895 124 471ms 30 Jul 2025 200th ovs-code 🇩🇪 894 85 82ms 27 May 2024 200th DialFrost 🇸🇬 894 85 79ms 22 Jun 2024 200th Steffan153 🇫🇮 894 85 80ms 15 Aug 2024 200th sean-niemann 🇺🇸 894 85 79ms 6 Jul 2025 204th nwellnhof 🇩🇪 893 149 294ms 23 Jun 2023 205th AlephSquirrel 892 99 10ms 21 Jul 2023 205th Seek64 🇩🇪 892 99 10ms 24 Sep 2024 205th kg583 🇺🇸 892 99 11ms 30 Nov 2025 205th jared-hughes 892 99 10ms 30 Nov 2025 205th zacjl 892 99 12ms 7 days ago 210th canissimia 🇦🇶 891 61 39ms 18 Jul 2022 210th Steffan153 🇫🇮 891 61 36ms 3 days ago 212th Steffan153 🇫🇮 890 87 443ms 21 Aug 2024 213th GrayJoKing 🇦🇺 889 92 77ms 21 Jun 2024 213th JayXon 🇺🇸 889 92 86ms 7 days ago 213th Steffan153 🇫🇮 889 92 79ms 7 days ago 216th Steffan153 🇫🇮 889 115 7ms 6 days ago 217th janbehrens 🇩🇪 888 80 11ms 24 Nov 2022 217th DayDun 🇸🇪 888 80 10ms 22 Jan 2023 217th tayloia 🇬🇧 888 80 9ms 16 May 2023 217th voytxt 🇨🇿 888 80 10ms 4 Feb 2024 217th Salutations45 888 80 11ms 27 Nov 2024 217th Lv0Sys 🇵🇱 888 80 11ms 12 days ago 217th Steffan153 🇫🇮 888 80 130ms 7 days ago 224th clockworknazo 887 85 4ms 25 Mar 2023 224th edsrzf 🇳🇿 887 85 4ms 18 Nov 2025 226th lifthrasiir 🇰🇷 886 35 2ms 29 Nov 2024 227th edsrzf 🇳🇿 886 92 4ms 24 Jul 2025 228th JayXon 🇺🇸 886 117 101ms 21 May 2023 229th Lydxn 🇨🇦 885 86 112ms 26 Feb 2023 230th ScottHamper 885 121 484ms 30 Nov 2025 231st JayXon 🇺🇸 884 109 458ms 24 Jul 2024 232nd hallvabo 🇳🇴 883 100 10ms 11 Jan 2022 232nd xsot 🇸🇬 883 100 10ms 21 Jul 2023 232nd inventshah 883 100 10ms 3 Aug 2023 232nd StefanHabel 🇨🇦 883 100 10ms 5 Sep 2023 232nd neel11235813 883 100 10ms 9 Nov 2023 232nd MeWhenI 🇻🇦 883 100 10ms 7 Dec 2023 232nd lynn 883 100 9ms 21 Jun 2024 232nd duckyluuk 🇳🇱 883 100 10ms 21 Jun 2024 232nd DialFrost 🇸🇬 883 100 10ms 28 Jun 2024 First Prev 161–240 of 1,606 Next Last