Fibonacci in Ruby in chars. 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 Gray Code Decoder Gray Code Encoder 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 Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 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 ArkScript 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 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 Gray Code Decoder Gray Code Encoder 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 Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 158th Secozzi 758 33 38ms 3 Nov 2020 158th ls-samer-abuthaher 758 33 35ms 7 Oct 2022 158th desecaw13 758 33 37ms 25 Jan 2025 164th nlc 735 34 37ms 11 Apr 2018 164th caerbannogwhite 735 34 36ms 14 Apr 2018 164th ajc2 735 34 34ms 1 May 2018 164th anishghosh103 735 34 36ms 15 Mar 2020 164th theLobsterRevolution 735 34 34ms 30 Dec 2020 164th lilyyy411 735 34 36ms 10 Sep 2021 164th bac0id 735 34 37ms 18 Oct 2021 164th AIn0n 735 34 35ms 1 Dec 2021 164th MichaelMBradley 🇨🇦 735 34 36ms 21 Mar 2022 164th oceko 735 34 33ms 26 Nov 2022 164th nstearns96 🇬🇧 735 34 34ms 15 Dec 2022 164th CheeseCake628 🇳🇴 735 34 35ms 15 Feb 2023 164th epic-programmer-guy 735 34 35ms 15 Dec 2023 164th stellartux 735 34 35ms 24 Dec 2023 164th hellopatrick 735 34 35ms 26 Dec 2023 164th Lv0Sys 🇵🇱 735 34 35ms 31 May 2025 164th albanian-laundromat 🇺🇸 735 34 36ms 2 Oct 2025 164th Andrey2001 735 34 35ms 25 Nov 2025 164th TheZwierzLF 🇵🇱 735 34 35ms 20 Dec 2025 183rd JKHiggins 714 35 35ms 27 Jun 2019 183rd jetpks 714 35 31ms 27 Jun 2019 183rd idoschor 714 35 34ms 30 Nov 2020 183rd bbakersmith 714 35 36ms 30 Jul 2021 183rd FnControlOption 714 35 34ms 21 Aug 2022 183rd cefqrn 714 35 36ms 26 May 2024 183rd madeforlosers 714 35 34ms 22 Nov 2024 190th Mir0ff944 694 36 35ms 24 Oct 2019 191st iamsolarpowered 676 37 34ms 15 Dec 2017 191st Boostik 676 37 36ms 7 Jan 2018 191st robymus 676 37 36ms 17 Sep 2018 191st boxjelly 676 37 35ms 9 Feb 2021 191st 5quiwyrm 676 37 35ms 31 Aug 2022 191st truisseaux 676 37 33ms 4 Sep 2024 191st edsrzf 🇳🇿 676 37 35ms 13 Sep 2024 198th Pyroan 658 38 34ms 17 Dec 2025 199th stevehodges 641 39 35ms 8 Nov 2017 199th JeremyC-za 641 39 37ms 9 Nov 2017 199th angetheo 641 39 36ms 19 Jan 2018 199th sacthedev 641 39 34ms 3 Apr 2018 199th okkun-oreo 641 39 35ms 2 Nov 2020 199th owen-c-parker 🇺🇸 641 39 34ms 24 Nov 2022 199th Maximizer02 641 39 34ms 17 Sep 2025 206th yokasuretsu 625 40 32ms 16 Apr 2018 206th atsushiootani 625 40 37ms 7 Aug 2018 206th esmg1 625 40 35ms 22 Aug 2018 206th MichalMarsalek 🇨🇿 625 40 35ms 2 Sep 2022 206th Heathcorp 🇦🇺 625 40 35ms 26 Nov 2022 206th nortonbatista 625 40 34ms 31 Oct 2023 206th Nathan-Masala 625 40 38ms 6 days ago 213th JRaspass 🇬🇧 610 41 35ms 23 Mar 2021 213th MCausc78 🇺🇦 610 41 35ms 29 Dec 2022 213th lgrandco 610 41 36ms 9 Oct 2024 216th tadd 595 42 34ms 16 Apr 2020 216th Ralac07 🇦🇺 595 42 38ms 17 Jun 2024 216th Just4FunCoder 595 42 34ms 26 Aug 2024 219th evanSpendlove 581 43 35ms 10 Dec 2020 220th biji1 568 44 38ms 26 Apr 2018 220th martica 568 44 37ms 20 May 2018 220th msbranicky 568 44 36ms 7 Sep 2023 223rd greghull 556 45 34ms 8 Nov 2017 223rd Noxilex 556 45 34ms 20 Mar 2019 223rd ashtraypettingzoo 🇺🇸 556 45 38ms 16 Feb 2023 223rd hacker112 🇸🇪 556 45 36ms 1 Jul 2024 227th adoxography 543 46 204ms 20 Sep 2018 227th CaAlden 543 46 36ms 10 May 2019 227th Ronterox 543 46 36ms 4 Feb 2026 230th snltd 532 47 37ms 18 Aug 2019 230th michaelbaudino 532 47 209ms 18 Oct 2020 230th JesseNoEyes 🇺🇸 532 47 37ms 26 Sep 2024 230th Mikey-Beep 🇬🇧 532 47 35ms 20 Aug 2025 234th timcustard 521 48 34ms 10 Nov 2017 234th elizj3 🇵🇱 521 48 35ms 30 Dec 2020 234th martinnorling 🇸🇪 521 48 36ms 6 Feb 2022 234th purp 521 48 35ms 13 Aug 2022 234th eiburns 521 48 35ms 7 Sep 2023 234th SwordF-Official 🇺🇸 521 48 35ms 2 Jun 2025 240th illegalnumbers 510 49 35ms 27 Jun 2019 First Prev 161–240 of 284 Next Last