Evil Numbers in Ruby in bytes. Cheevos Holes Recent Holes Langs Medals Misc 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 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 Erlang 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 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 Erlang 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 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 71st ejini6969 711 38 36ms 13 Jun 2025 77th n1LS 692 39 38ms 2 Oct 2019 77th ajc2 692 39 38ms 18 Oct 2019 77th AlephSquirrel 692 39 35ms 7 Mar 2023 77th vluyzvg 692 39 32ms 30 Mar 2023 77th LostSyntax21 🇬🇧 692 39 35ms 23 Aug 2024 77th Lv0Sys 🇵🇱 692 39 35ms 26 May 2025 77th snoozingnewt 🇺🇸 692 39 36ms 14 Sep 2025 84th aydamak 675 40 37ms 15 May 2024 85th robymus 659 41 34ms 17 Sep 2018 86th biinari 643 42 36ms 27 Mar 2018 86th adoxography 643 42 39ms 22 Jul 2018 86th jstanley0 643 42 49ms 12 Dec 2020 86th rucin93 🇵🇱 643 42 34ms 14 May 2025 86th Babafaba 643 42 32ms 8 days ago 91st ConorOBrien-Foxx 628 43 47ms 10 Apr 2018 91st nlc 628 43 48ms 11 Apr 2018 91st reireias 628 43 35ms 30 Jul 2019 91st handisb 628 43 49ms 14 Sep 2019 91st mogron 628 43 40ms 13 Dec 2019 91st dwayneparton 628 43 43ms 8 May 2020 91st Michaelncallahan 628 43 44ms 8 May 2020 91st aksyristos 628 43 37ms 31 Jan 2023 99th snltd 614 44 35ms 14 Aug 2019 99th sapphyrus 614 44 35ms 18 Feb 2020 99th meenie 614 44 37ms 1 Jan 2021 99th Pluviolithic 614 44 45ms 17 Oct 2023 103rd tom-lord 600 45 31ms 8 Nov 2017 103rd clupasq 600 45 35ms 3 Feb 2018 103rd biji1 600 45 36ms 26 Apr 2018 103rd atsushiootani 600 45 34ms 7 Aug 2018 103rd 0xddom 600 45 35ms 18 Dec 2019 103rd tadd 600 45 34ms 16 Apr 2020 103rd Secozzi 600 45 34ms 21 Oct 2020 103rd Luj8n 600 45 35ms 12 Nov 2021 103rd badboj40 600 45 42ms 14 Feb 2023 112th rlue 587 46 35ms 8 Nov 2017 112th basuneko 587 46 39ms 8 Nov 2017 112th JeremyC-za 587 46 35ms 10 Nov 2017 112th Yytsi 587 46 35ms 14 Mar 2019 112th TFeld00 🇩🇰 587 46 34ms 6 Jun 2019 112th th0rex 587 46 31ms 10 Jun 2019 112th Mir0ff944 587 46 37ms 23 Oct 2019 112th fynnkroeger 587 46 34ms 17 Oct 2022 120th kobaltz 574 47 34ms 8 Nov 2017 120th stevehodges 574 47 34ms 8 Nov 2017 120th iamsolarpowered 574 47 48ms 15 Dec 2017 120th babcockd 574 47 44ms 19 Dec 2017 120th Mikaeel66 574 47 47ms 10 Nov 2019 120th branch14 574 47 36ms 3 Aug 2020 120th maths22 🇺🇸 574 47 39ms 9 Dec 2020 120th HallMatthew314 574 47 40ms 10 Dec 2021 120th Edjyzod 574 47 36ms 3 Oct 2022 129th jacobsmith 563 48 43ms 15 Feb 2018 129th yokasuretsu 563 48 32ms 18 Apr 2018 129th Marcel-Brouette 563 48 35ms 26 Aug 2018 129th jamespeilunli 563 48 38ms 1 May 2022 133rd alexkurowski 551 49 36ms 8 Nov 2017 133rd Boostik 551 49 36ms 7 Jan 2018 133rd chris-arsenault 551 49 35ms 2 Feb 2018 133rd caerbannogwhite 551 49 34ms 13 Apr 2018 133rd jetpks 551 49 46ms 27 Jun 2019 133rd boxjelly 551 49 36ms 12 Feb 2021 133rd RustemB 🇷🇺 551 49 35ms 4 May 2021 133rd schachmattmatt 551 49 35ms 11 Aug 2021 141st sstadick 540 50 35ms 24 Jan 2018 141st sacthedev 540 50 36ms 3 Apr 2018 141st tsundokul 540 50 32ms 6 Nov 2018 141st atayarani 540 50 36ms 17 Jan 2019 141st Noxilex 540 50 35ms 20 Mar 2019 141st op-ecoprintq 540 50 36ms 31 Jul 2020 141st eggplants 🇯🇵 540 50 42ms 26 Nov 2020 148th san-nat 529 51 35ms 12 Dec 2020 148th frnco 529 51 36ms 2 Jun 2022 148th Krtecik 529 51 47ms 9 Feb 2024 First Prev 76–150 of 180 Next Last