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 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 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 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 ArkScript 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 ArkScript 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 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 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 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 447ms 11 Mar 2023 1st JayXon 🇺🇸 1,000 82 499ms 11 Mar 2023 1st Lydxn 🇨🇦 1,000 82 445ms 19 May 2023 1st nwellnhof 🇩🇪 1,000 82 488ms 27 Jun 2023 1st tomtheisen 🇺🇸 1,000 82 497ms 5 Feb 2025 1st AdrienHache 🇫🇷 1,000 82 461ms 23 Jul 2025 7th namelessiw 988 83 484ms 1 Aug 2025 8th Yax42 🇫🇷 976 84 517ms 31 Jan 2025 9th Steffan153 🇫🇮 943 87 459ms 21 Aug 2024 10th MeWhenI 🇻🇦 911 90 464ms 9 Aug 2023 11th Shanethegamer 🇺🇸 891 92 444ms 26 Mar 2024 12th prplz 🇦🇺 882 93 434ms 18 Jan 2022 12th hemphen 882 93 411ms 28 Aug 2022 12th feberhard 882 93 461ms 6 Apr 2023 12th sean-niemann 🇺🇸 882 93 418ms 19 Apr 2025 16th annaproxy 872 94 446ms 19 Mar 2022 17th ScottHamper 854 96 449ms 26 Feb 2022 17th stefangimmillaro 854 96 452ms 5 Jan 2023 17th bojernico 854 96 453ms 6 Apr 2023 20th tomh1012 837 98 419ms 31 Jan 2022 20th pkim 837 98 453ms 6 Apr 2023 20th danielxbauer 837 98 428ms 6 Apr 2023 20th meinsiedler 837 98 442ms 6 Apr 2023 20th postie77 837 98 448ms 8 May 2023 25th Skleni 828 99 439ms 6 Apr 2023 26th billings7 🇬🇧 781 105 418ms 12 Nov 2023 26th MiffOttah 781 105 464ms 28 Nov 2024 28th ericlangedijk 🇸🇮 774 106 410ms 19 Mar 2022 29th revlayle 🇺🇸 759 108 431ms 20 Jan 2022 29th primo-ppcg 🇹🇭 759 108 424ms 20 Apr 2022 31st Yewzir 🇧🇪 732 112 404ms 1 Dec 2023 31st michelebastione 🇮🇹 732 112 440ms 20 Sep 2025 33rd fabianrieder 719 114 451ms 6 Apr 2023 34th janbehrens 🇩🇪 713 115 393ms 23 Jun 2023 35th roavin 707 116 428ms 23 Jun 2022 35th hamhub7 707 116 402ms 9 Aug 2022 35th bac0id 707 116 420ms 22 Sep 2023 35th CaedenHarper 🇨🇦 707 116 378ms 16 Oct 2025 39th HumanoidCPU 695 118 433ms 3 Mar 2025 40th m-tkach 🇺🇦 678 121 402ms 10 Jan 2022 40th arctouch-cristiannevianna 678 121 414ms 1 Mar 2024 40th acer-xq 678 121 436ms 5 Aug 2024 43rd rifatx 667 123 403ms 14 Jul 2024 44th Mikey-Beep 🇬🇧 646 127 441ms 4 Sep 2024 45th p-vf 🇨🇭 636 129 403ms 16 Jul 2022 46th amazingalek 631 130 401ms 15 days ago 46th mwarvik 🇳🇴 631 130 398ms 15 days ago 48th alicethecatwhisperermeow 617 133 414ms 7 Aug 2024 49th adotagarwal 603 136 437ms 4 Mar 2023 49th aliakseikalosha 603 136 417ms 7 Oct 2024 49th snoozingnewt 🇨🇦 603 136 433ms 28 Sep 2025 52nd Adix-null 🇱🇹 599 137 451ms 10 Nov 2025 53rd codewrite 🇬🇧 573 143 433ms 11 days ago 54th malworthy 566 145 455ms 9 Aug 2024 55th msbranicky 550 149 442ms 22 Aug 2023 56th krcs 🇵🇱 532 154 437ms 10 May 2022 56th tobiasberei 532 154 449ms 6 Apr 2023 58th arcpolaris 529 155 415ms 4 Dec 2024 59th KatieLG 🇬🇧 474 173 401ms 15 Jan 2022 60th gblikas 432 190 423ms 21 Aug 2024 61st memmaptensor 🇹🇭 410 200 455ms 21 Jan 2022 62nd 0xDomi 380 216 415ms 6 Apr 2023 63rd chrispewebb 259 317 497ms 28 Nov 2025 64th Trickermand 243 337 419ms 12 Dec 2022 65th KatieLG-Transpiler 🇬🇧 193 425 412ms 4 Jul 2022 1–65 of 65
