ISBN in C# 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 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 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 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 1st btnlq 1,000 82 416ms 11 Mar 2023 1st JayXon 🇺🇸 1,000 82 416ms 11 Mar 2023 1st Lydxn 🇨🇦 1,000 82 413ms 19 May 2023 1st nwellnhof 🇩🇪 1,000 82 375ms 27 Jun 2023 1st tomtheisen 🇺🇸 1,000 82 455ms 5 Feb 2025 1st AdrienHache 🇫🇷 1,000 82 418ms 23 Jul 2025 7th namelessiw 988 83 463ms 1 Aug 2025 8th Yax42 🇫🇷 976 84 448ms 31 Jan 2025 9th Steffan153 🇫🇮 943 87 406ms 21 Aug 2024 10th MeWhenI 🇻🇦 911 90 400ms 9 Aug 2023 11th Shanethegamer 🇺🇸 891 92 363ms 26 Mar 2024 12th prplz 🇦🇺 882 93 363ms 18 Jan 2022 12th hemphen 882 93 342ms 28 Aug 2022 12th feberhard 882 93 362ms 6 Apr 2023 12th sean-niemann 🇺🇸 882 93 401ms 19 Apr 2025 16th annaproxy 872 94 350ms 19 Mar 2022 17th ScottHamper 854 96 360ms 26 Feb 2022 17th stefangimmillaro 854 96 409ms 5 Jan 2023 17th bojernico 854 96 352ms 6 Apr 2023 20th tomh1012 837 98 396ms 31 Jan 2022 20th pkim 837 98 358ms 6 Apr 2023 20th danielxbauer 837 98 356ms 6 Apr 2023 20th meinsiedler 837 98 363ms 6 Apr 2023 20th postie77 837 98 372ms 8 May 2023 25th Skleni 828 99 366ms 6 Apr 2023 26th billings7 🇬🇧 781 105 353ms 12 Nov 2023 26th MiffOttah 781 105 402ms 28 Nov 2024 28th ericlangedijk 🇸🇮 774 106 352ms 19 Mar 2022 29th revlayle 🇺🇸 759 108 364ms 20 Jan 2022 29th primo-ppcg 🇹🇭 759 108 334ms 20 Apr 2022 31st Yewzir 🇧🇪 732 112 337ms 1 Dec 2023 31st michelebastione 🇮🇹 732 112 398ms 20 Sep 2025 33rd fabianrieder 719 114 360ms 6 Apr 2023 34th janbehrens 🇩🇪 713 115 329ms 23 Jun 2023 35th roavin 707 116 385ms 23 Jun 2022 35th hamhub7 707 116 333ms 9 Aug 2022 35th bac0id 707 116 386ms 22 Sep 2023 35th CaedenHarper 🇨🇦 707 116 355ms 16 Oct 2025 39th HumanoidCPU 695 118 338ms 3 Mar 2025 40th m-tkach 🇺🇦 678 121 329ms 10 Jan 2022 40th arctouch-cristiannevianna 678 121 332ms 1 Mar 2024 40th acer-xq 678 121 394ms 5 Aug 2024 43rd rifatx 667 123 376ms 14 Jul 2024 44th Mikey-Beep 🇬🇧 646 127 405ms 4 Sep 2024 45th p-vf 🇨🇭 636 129 332ms 16 Jul 2022 46th alicethecatwhisperermeow 617 133 409ms 7 Aug 2024 47th adotagarwal 603 136 359ms 4 Mar 2023 47th aliakseikalosha 603 136 370ms 7 Oct 2024 47th snoozingnewt 🇨🇦 603 136 357ms 28 Sep 2025 50th Adix-null 🇱🇹 599 137 371ms 10 Nov 2025 51st malworthy 566 145 391ms 9 Aug 2024 52nd msbranicky 550 149 361ms 22 Aug 2023 53rd krcs 🇵🇱 532 154 341ms 10 May 2022 53rd tobiasberei 532 154 357ms 6 Apr 2023 55th arcpolaris 529 155 394ms 4 Dec 2024 56th KatieLG 🇬🇧 474 173 360ms 15 Jan 2022 57th gblikas 432 190 360ms 21 Aug 2024 58th memmaptensor 🇹🇭 410 200 381ms 21 Jan 2022 59th 0xDomi 380 216 335ms 6 Apr 2023 60th chrispewebb 259 317 391ms 16 days ago 61st Trickermand 243 337 348ms 12 Dec 2022 62nd KatieLG-Transpiler 🇬🇧 193 425 338ms 4 Jul 2022 1–62 of 62
