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 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 Apéry’s Constant Binary Lambda Calculus 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 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 ><> 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 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 ><> 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 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 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 Apéry’s Constant Binary Lambda Calculus 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 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 11ms 31 Oct 2025 402nd edsrzf 🇳🇿 849 148 41ms 27 Nov 2025 403rd xsot 🇸🇬 848 55 3ms 6 Jul 2025 404th MeWhenI 🇻🇦 848 69 5ms 13 Aug 2024 405th prplz 🇦🇺 848 109 1ms 18 Jan 2022 405th xsot 🇸🇬 848 109 2ms 1 Feb 2024 407th GrayJoKing 🇦🇺 847 130 2ms 12 Sep 2022 408th didion0 🇺🇸 846 84 10ms 25 Jan 2022 408th 13x1 🇩🇪 846 84 11ms 15 May 2023 408th biocommando 🇫🇮 846 84 11ms 11 Aug 2023 408th deancureton 846 84 13ms 29 Dec 2024 408th CaedenHarper 🇨🇦 846 84 9ms 22 Aug 2025 408th solisolu 846 84 9ms 23 Nov 2025 414th Shanethegamer 🇺🇸 846 90 2,336ms 28 Oct 2024 415th GrayJoKing 🇦🇺 846 115 9ms 28 Jul 2023 416th ovs-code 🇩🇪 845 114 471ms 26 Nov 2024 417th kaascevich 845 123 110ms 21 Jul 2025 418th DialFrost 🇸🇬 844 66 283ms 10 Oct 2024 419th lynn 844 124 1,470ms 16 Jan 2022 420th clockworknazo 843 62 2ms 17 Nov 2022 421st HumanoidCPU 843 127 504ms 8 Nov 2025 422nd Sakisan 🇧🇪 842 64 1,061ms 30 Jun 2022 423rd Shanethegamer 🇺🇸 842 89 130ms 8 Jan 2025 423rd emplv 🇱🇻 842 89 141ms 28 Mar 2025 423rd ovs-code 🇩🇪 842 89 131ms 17 Apr 2025 426th MeWhenI 🇻🇦 842 158 293ms 7 Jan 2025 427th ovs-code 🇩🇪 842 224 1,417ms 18 Apr 2025 428th Shanethegamer 🇺🇸 841 92 444ms 26 Mar 2024 429th TFeld00 🇩🇰 841 105 10ms 19 May 2022 429th stefangimmillaro 841 105 10ms 26 Dec 2022 429th betaveros 841 105 9ms 1 Jan 2023 429th 5cw 🇺🇸 841 105 10ms 3 May 2023 429th minhtrancccp 841 105 10ms 26 Sep 2023 429th lifthrasiir 🇰🇷 841 105 10ms 20 Nov 2024 429th Emutis 🇱🇹 841 105 10ms 4 Feb 2025 429th qpwoeirut 841 105 10ms 28 Sep 2025 429th FoxInTheClouds 841 105 10ms 13 days ago 438th Irratix 🇳🇱 840 110 2ms 14 May 2022 438th speles 🇺🇦 840 110 2ms 29 Oct 2023 440th acotis 840 144 167ms 9 days ago 441st jacobly0 🇺🇸 840 176 1,723ms 22 Apr 2024 442nd neel11235813 839 91 461ms 13 Mar 2024 442nd kg583 🇺🇸 839 91 466ms 21 Mar 2024 442nd bizy-coder 839 91 475ms 1 Apr 2024 442nd MeWhenI 🇻🇦 839 91 480ms 24 May 2024 442nd duckyluuk 🇳🇱 839 91 372ms 21 Jun 2024 442nd AlephSquirrel 839 91 469ms 3 Jul 2024 442nd CaedenHarper 🇨🇦 839 91 437ms 30 Nov 2025 449th SirBogman 🇺🇸 838 37 2ms 27 May 2024 449th emgordon154 838 37 41ms 11 Sep 2024 449th Yewzir 🇧🇪 838 37 2ms 19 Dec 2024 452nd 4hg 🇺🇸 837 52 33ms 26 Jul 2023 453rd DialFrost 🇸🇬 837 91 2,307ms 25 Oct 2024 454th MeWhenI 🇻🇦 836 65 36ms 7 Dec 2023 455th Natanaelel 🇸🇪 836 85 13ms 7 Feb 2023 455th HumanoidCPU 836 85 12ms 2 Mar 2025 457th edsrzf 🇳🇿 836 97 62ms 7 Oct 2025 458th Shanethegamer 🇺🇸 836 159 294ms 20 Apr 2022 459th JayXon 🇺🇸 835 98 87ms 9 Apr 2023 460th jacobly0 🇺🇸 835 104 2ms 11 Sep 2023 461st drabart 🇵🇱 834 132 53ms 16 Dec 2023 462nd DialFrost 🇸🇬 833 90 133ms 3 Nov 2024 463rd Bulmenisaurus 833 106 10ms 2 Feb 2025 464th prplz 🇦🇺 832 93 434ms 18 Jan 2022 464th hemphen 832 93 411ms 28 Aug 2022 464th feberhard 832 93 461ms 6 Apr 2023 464th sean-niemann 🇺🇸 832 93 418ms 19 Apr 2025 468th ZakkkkAttackkkk 🇵🇭 832 111 1ms 9 Nov 2023 468th Szum123321 🇵🇱 832 111 2ms 9 Dec 2023 468th DialFrost 🇸🇬 832 111 1ms 20 Dec 2024 471st lynn 832 148 30ms 18 Jul 2023 472nd dcgjb 831 67 265ms 14 Feb 2024 473rd emplv 🇱🇻 831 160 284ms 6 Jan 2023 473rd KasperKivimaeki 🇫🇮 831 160 335ms 20 Oct 2025 475th jared-hughes 831 200 8ms 18 Dec 2024 476th Shanethegamer 🇺🇸 830 63 1ms 13 May 2023 477th pardouin 🇫🇷 830 71 1,238ms 2 Sep 2025 478th inventshah 830 92 478ms 21 Jan 2024 478th GolfingSuccess 🇬🇷 830 92 402ms 2 Mar 2024 480th emplv 🇱🇻 830 101 6ms 3 Jul 2023 First Prev 401–480 of 1,602 Next Last