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 396th luuumine 🇫🇷 849 104 10ms 31 Oct 2025 402nd edsrzf 🇳🇿 849 148 41ms 27 Nov 2025 403rd xsot 🇸🇬 848 55 3ms 6 Jul 2025 404th ovs-code 🇩🇪 848 89 456ms 5 Jul 2024 405th prplz 🇦🇺 847 109 1ms 18 Jan 2022 405th xsot 🇸🇬 847 109 2ms 1 Feb 2024 407th didion0 🇺🇸 846 84 10ms 25 Jan 2022 407th 13x1 🇩🇪 846 84 10ms 15 May 2023 407th biocommando 🇫🇮 846 84 10ms 11 Aug 2023 407th deancureton 846 84 11ms 29 Dec 2024 407th CaedenHarper 🇨🇦 846 84 11ms 22 Aug 2025 407th solisolu 846 84 9ms 23 Nov 2025 413th MeWhenI 🇻🇦 846 90 113ms 20 Oct 2022 414th GrayJoKing 🇦🇺 846 115 9ms 28 Jul 2023 415th ovs-code 🇩🇪 845 114 471ms 26 Nov 2024 416th lynn 844 124 1,364ms 16 Jan 2022 417th clockworknazo 843 62 1ms 17 Nov 2022 418th DialFrost 🇸🇬 843 66 270ms 10 Oct 2024 419th kaascevich 843 123 119ms 21 Jul 2025 420th HumanoidCPU 843 127 504ms 8 Nov 2025 421st Sakisan 🇧🇪 842 64 1,061ms 30 Jun 2022 422nd MeWhenI 🇻🇦 842 158 284ms 7 Jan 2025 423rd ovs-code 🇩🇪 842 224 1,422ms 18 Apr 2025 424th Shanethegamer 🇺🇸 841 92 412ms 26 Mar 2024 425th TFeld00 🇩🇰 841 105 10ms 19 May 2022 425th stefangimmillaro 841 105 10ms 26 Dec 2022 425th betaveros 841 105 9ms 1 Jan 2023 425th 5cw 🇺🇸 841 105 10ms 3 May 2023 425th minhtrancccp 841 105 10ms 26 Sep 2023 425th lifthrasiir 🇰🇷 841 105 10ms 20 Nov 2024 425th qpwoeirut 841 105 10ms 28 Sep 2025 432nd drabart 🇵🇱 841 132 62ms 16 Dec 2023 433rd acotis 841 144 174ms 10 Feb 2026 434th Irratix 🇳🇱 840 110 2ms 14 May 2022 434th speles 🇺🇦 840 110 2ms 29 Oct 2023 436th jacobly0 🇺🇸 840 176 1,723ms 22 Apr 2024 437th m-tkach 🇺🇦 839 90 455ms 21 Jan 2024 437th sean-niemann 🇺🇸 839 90 470ms 28 Jan 2025 439th SirBogman 🇺🇸 838 37 2ms 27 May 2024 439th emgordon154 838 37 40ms 11 Sep 2024 439th Yewzir 🇧🇪 838 37 2ms 19 Dec 2024 442nd 4hg 🇺🇸 838 52 32ms 26 Jul 2023 443rd MeWhenI 🇻🇦 836 65 36ms 7 Dec 2023 444th MeWhenI 🇻🇦 836 69 5ms 13 Aug 2024 445th Natanaelel 🇸🇪 836 85 14ms 7 Feb 2023 445th HumanoidCPU 836 85 11ms 2 Mar 2025 447th edsrzf 🇳🇿 836 97 62ms 7 Oct 2025 448th Shanethegamer 🇺🇸 836 159 287ms 20 Apr 2022 449th jacobly0 🇺🇸 835 104 2ms 11 Sep 2023 450th clockworknazo 834 129 2ms 18 Sep 2022 451st Alex-x90 🇺🇸 834 133 69ms 8 Aug 2023 451st Yewzir 🇧🇪 834 133 62ms 29 Nov 2023 453rd Bulmenisaurus 833 106 10ms 2 Feb 2025 454th prplz 🇦🇺 832 93 434ms 18 Jan 2022 454th hemphen 832 93 397ms 28 Aug 2022 454th feberhard 832 93 421ms 6 Apr 2023 454th sean-niemann 🇺🇸 832 93 412ms 19 Apr 2025 458th ZakkkkAttackkkk 🇵🇭 832 111 1ms 9 Nov 2023 458th Szum123321 🇵🇱 832 111 2ms 9 Dec 2023 458th DialFrost 🇸🇬 832 111 1ms 20 Dec 2024 461st lynn 832 148 30ms 18 Jul 2023 462nd dcgjb 831 67 230ms 14 Feb 2024 463rd emplv 🇱🇻 831 160 306ms 6 Jan 2023 463rd KasperKivimaeki 🇫🇮 831 160 293ms 20 Oct 2025 465th Shanethegamer 🇺🇸 830 63 1ms 13 May 2023 466th pardouin 🇫🇷 830 71 1,321ms 2 Sep 2025 467th neel11235813 830 91 419ms 13 Mar 2024 467th kg583 🇺🇸 830 91 466ms 21 Mar 2024 467th bizy-coder 830 91 475ms 1 Apr 2024 467th MeWhenI 🇻🇦 830 91 436ms 24 May 2024 467th duckyluuk 🇳🇱 830 91 372ms 21 Jun 2024 467th AlephSquirrel 830 91 469ms 3 Jul 2024 467th CaedenHarper 🇨🇦 830 91 437ms 30 Nov 2025 474th emplv 🇱🇻 830 101 6ms 3 Jul 2023 474th stefangimmillaro 830 101 4ms 12 Oct 2023 474th edsrzf 🇳🇿 830 101 5ms 7 Oct 2025 477th Shanethegamer 🇺🇸 828 107 152ms 24 May 2025 478th GrayJoKing 🇦🇺 828 130 2ms 12 Sep 2022 479th Mandrzejy 🇵🇱 828 134 68ms 13 Sep 2024 480th CLOStrophobic 🇮🇹 827 123 8ms 21 Jan 2025 First Prev 401–480 of 1,606 Next Last