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 Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator 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 ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator 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 376th Shanethegamer 🇺🇸 853 113 457ms 21 Apr 2022 376th Steffan153 🇫🇮 853 113 475ms 23 Jul 2024 376th sean-niemann 🇺🇸 853 113 465ms 23 Mar 2025 379th ovs-code 🇩🇪 853 129 58ms 10 Feb 2023 380th stefangimmillaro 853 156 253ms 20 Oct 2023 381st frosster 852 102 2ms 26 Mar 2025 382nd the-zammers 850 132 158ms 1 Oct 2023 383rd m-tkach 🇺🇦 849 90 400ms 21 Jan 2024 383rd sean-niemann 🇺🇸 849 90 447ms 28 Jan 2025 385th VictorFordham 849 104 9ms 20 Feb 2023 385th Alex-x90 🇺🇸 849 104 9ms 3 Aug 2023 385th mathisfun271 849 104 9ms 5 Feb 2024 385th EnTerr 849 104 9ms 8 Sep 2024 385th KasperKivimaeki 🇫🇮 849 104 15ms 11 Jul 2025 385th luuumine 🇫🇷 849 104 10ms 31 Oct 2025 391st 386asm 🇺🇸 849 118 40ms 5 May 2023 392nd edsrzf 🇳🇿 849 148 39ms 8 days ago 393rd sisyphus-ppcg 🇦🇺 848 64 34ms 11 Jan 2022 393rd GrayJoKing 🇦🇺 848 64 42ms 10 Feb 2022 395th MeWhenI 🇻🇦 848 69 5ms 13 Aug 2024 395th Steffan153 🇫🇮 848 69 6ms 13 Aug 2024 397th ZakkkkAttackkkk 🇵🇭 848 111 2ms 9 Nov 2023 397th Szum123321 🇵🇱 848 111 2ms 9 Dec 2023 397th DialFrost 🇸🇬 848 111 2ms 20 Dec 2024 400th GrayJoKing 🇦🇺 847 130 3ms 12 Sep 2022 401st xsot 🇸🇬 846 55 3ms 6 Jul 2025 402nd Shanethegamer 🇺🇸 846 90 2,926ms 28 Oct 2024 403rd GrayJoKing 🇦🇺 846 115 8ms 28 Jul 2023 404th didion0 🇺🇸 845 84 9ms 25 Jan 2022 404th 13x1 🇩🇪 845 84 10ms 15 May 2023 404th biocommando 🇫🇮 845 84 10ms 11 Aug 2023 404th deancureton 845 84 10ms 29 Dec 2024 404th CaedenHarper 🇨🇦 845 84 10ms 22 Aug 2025 404th solisolu 845 84 9ms 12 days ago 410th ovs-code 🇩🇪 845 114 446ms 26 Nov 2024 411th kaascevich 845 123 111ms 21 Jul 2025 412th lynn 844 124 1,341ms 16 Jan 2022 413th clockworknazo 843 62 2ms 17 Nov 2022 414th DialFrost 🇸🇬 843 66 289ms 10 Oct 2024 415th HumanoidCPU 843 127 342ms 8 Nov 2025 416th Sakisan 🇧🇪 842 64 64ms 30 Jun 2022 417th MeWhenI 🇻🇦 842 158 257ms 7 Jan 2025 418th ovs-code 🇩🇪 842 224 447ms 18 Apr 2025 419th TFeld00 🇩🇰 841 105 10ms 19 May 2022 419th stefangimmillaro 841 105 10ms 26 Dec 2022 419th betaveros 841 105 9ms 1 Jan 2023 419th 5cw 🇺🇸 841 105 10ms 3 May 2023 419th minhtrancccp 841 105 10ms 26 Sep 2023 419th lifthrasiir 🇰🇷 841 105 12ms 20 Nov 2024 419th Emutis 🇱🇹 841 105 9ms 4 Feb 2025 419th qpwoeirut 841 105 10ms 28 Sep 2025 427th Shanethegamer 🇺🇸 841 112 2ms 20 Apr 2022 428th Shanethegamer 🇺🇸 840 89 137ms 8 Jan 2025 428th emplv 🇱🇻 840 89 133ms 28 Mar 2025 428th ovs-code 🇩🇪 840 89 133ms 17 Apr 2025 431st Shanethegamer 🇺🇸 840 92 364ms 26 Mar 2024 432nd jacobly0 🇺🇸 840 176 1,691ms 22 Apr 2024 433rd neel11235813 839 91 380ms 13 Mar 2024 433rd kg583 🇺🇸 839 91 416ms 21 Mar 2024 433rd bizy-coder 839 91 369ms 1 Apr 2024 433rd MeWhenI 🇻🇦 839 91 406ms 24 May 2024 433rd duckyluuk 🇳🇱 839 91 371ms 21 Jun 2024 433rd AlephSquirrel 839 91 422ms 3 Jul 2024 433rd CaedenHarper 🇨🇦 839 91 384ms 6 days ago 440th SirBogman 🇺🇸 838 37 2ms 27 May 2024 440th emgordon154 838 37 40ms 11 Sep 2024 440th Yewzir 🇧🇪 838 37 2ms 19 Dec 2024 443rd 4hg 🇺🇸 837 52 36ms 26 Jul 2023 444th DialFrost 🇸🇬 837 91 2,356ms 25 Oct 2024 445th GrayJoKing 🇦🇺 837 152 31ms 18 Jul 2023 446th edsrzf 🇳🇿 836 97 69ms 7 Oct 2025 447th Shanethegamer 🇺🇸 836 159 261ms 20 Apr 2022 448th MeWhenI 🇻🇦 835 65 37ms 7 Dec 2023 449th Natanaelel 🇸🇪 835 85 9ms 7 Feb 2023 449th HumanoidCPU 835 85 10ms 2 Mar 2025 First Prev 376–450 of 1,557 Next Last