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 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 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 466ms 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 443ms 21 Aug 2024 10th MeWhenI 🇻🇦 911 90 445ms 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 457ms 6 Apr 2023 12th sean-niemann 🇺🇸 882 93 418ms 19 Apr 2025 16th annaproxy 872 94 428ms 19 Mar 2022 17th ScottHamper 854 96 449ms 26 Feb 2022 17th stefangimmillaro 854 96 438ms 5 Jan 2023 17th bojernico 854 96 444ms 6 Apr 2023 20th tomh1012 837 98 419ms 31 Jan 2022 20th pkim 837 98 439ms 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 448ms 28 Nov 2024 28th revlayle 🇺🇸 759 108 431ms 20 Jan 2022 28th primo-ppcg 🇹🇭 759 108 407ms 20 Apr 2022 30th Yewzir 🇧🇪 732 112 404ms 1 Dec 2023 30th michelebastione 🇮🇹 732 112 440ms 20 Sep 2025 32nd fabianrieder 719 114 440ms 6 Apr 2023 33rd janbehrens 🇩🇪 713 115 393ms 23 Jun 2023 34th roavin 707 116 413ms 23 Jun 2022 34th hamhub7 707 116 402ms 9 Aug 2022 34th bac0id 707 116 420ms 22 Sep 2023 34th CaedenHarper 🇨🇦 707 116 378ms 16 Oct 2025 38th HumanoidCPU 695 118 378ms 3 Mar 2025 39th m-tkach 🇺🇦 678 121 402ms 10 Jan 2022 39th arctouch-cristiannevianna 678 121 414ms 1 Mar 2024 39th acer-xq 678 121 414ms 5 Aug 2024 42nd rifatx 667 123 396ms 14 Jul 2024 43rd Mikey-Beep 🇬🇧 646 127 422ms 4 Sep 2024 44th p-vf 🇨🇭 636 129 403ms 16 Jul 2022 45th amazingalek 🇳🇴 631 130 401ms 30 Dec 2025 45th mwarvik 🇳🇴 631 130 398ms 31 Dec 2025 47th alicethecatwhisperermeow 617 133 414ms 7 Aug 2024 48th aliakseikalosha 603 136 417ms 7 Oct 2024 48th snoozingnewt 🇨🇦 603 136 428ms 28 Sep 2025 50th Adix-null 🇱🇹 599 137 410ms 10 Nov 2025 51st codewrite 🇬🇧 573 143 430ms 4 Jan 2026 52nd malworthy 566 145 420ms 9 Aug 2024 53rd msbranicky 550 149 437ms 22 Aug 2023 54th krcs 🇵🇱 532 154 428ms 10 May 2022 54th tobiasberei 532 154 448ms 6 Apr 2023 56th arcpolaris 529 155 415ms 4 Dec 2024 57th KatieLG 🇬🇧 474 173 401ms 15 Jan 2022 58th gblikas 432 190 406ms 21 Aug 2024 59th memmaptensor 🇹🇭 410 200 447ms 21 Jan 2022 60th 0xDomi 380 216 415ms 6 Apr 2023 61st chrispewebb 259 317 439ms 28 Nov 2025 62nd Trickermand 243 337 419ms 12 Dec 2022 63rd KatieLG-Transpiler 🇬🇧 193 425 412ms 4 Jul 2022 1–63 of 63
