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 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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi 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 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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 72nd tatzyr 🇯🇵 711 38 35ms 8 Jan 2025 72nd ejini6969 711 38 36ms 13 Jun 2025 78th n1LS 692 39 38ms 2 Oct 2019 78th ajc2 692 39 38ms 18 Oct 2019 78th AlephSquirrel 692 39 35ms 7 Mar 2023 78th vluyzvg 692 39 32ms 30 Mar 2023 78th LostSyntax21 🇬🇧 692 39 35ms 23 Aug 2024 78th Lv0Sys 🇵🇱 692 39 35ms 26 May 2025 78th snoozingnewt 🇺🇸 692 39 36ms 14 Sep 2025 85th aydamak 675 40 37ms 15 May 2024 86th robymus 659 41 34ms 17 Sep 2018 87th biinari 643 42 36ms 27 Mar 2018 87th adoxography 643 42 39ms 22 Jul 2018 87th jstanley0 643 42 49ms 12 Dec 2020 87th rucin93 🇵🇱 643 42 34ms 14 May 2025 87th Babafaba 643 42 32ms 16 days ago 92nd ConorOBrien-Foxx 628 43 47ms 10 Apr 2018 92nd nlc 628 43 48ms 11 Apr 2018 92nd reireias 628 43 35ms 30 Jul 2019 92nd handisb 628 43 49ms 14 Sep 2019 92nd mogron 628 43 40ms 13 Dec 2019 92nd dwayneparton 628 43 43ms 8 May 2020 92nd Michaelncallahan 628 43 44ms 8 May 2020 92nd aksyristos 628 43 37ms 31 Jan 2023 100th snltd 614 44 35ms 14 Aug 2019 100th sapphyrus 614 44 35ms 18 Feb 2020 100th meenie 614 44 37ms 1 Jan 2021 100th Pluviolithic 614 44 45ms 17 Oct 2023 104th tom-lord 600 45 31ms 8 Nov 2017 104th clupasq 600 45 35ms 3 Feb 2018 104th biji1 600 45 36ms 26 Apr 2018 104th atsushiootani 600 45 34ms 7 Aug 2018 104th 0xddom 600 45 35ms 18 Dec 2019 104th tadd 600 45 34ms 16 Apr 2020 104th Secozzi 600 45 34ms 21 Oct 2020 104th Luj8n 600 45 35ms 12 Nov 2021 104th badboj40 600 45 42ms 14 Feb 2023 113th rlue 587 46 35ms 8 Nov 2017 113th basuneko 587 46 39ms 8 Nov 2017 113th JeremyC-za 587 46 35ms 10 Nov 2017 113th Yytsi 587 46 35ms 14 Mar 2019 113th TFeld00 🇩🇰 587 46 34ms 6 Jun 2019 113th th0rex 587 46 31ms 10 Jun 2019 113th Mir0ff944 587 46 37ms 23 Oct 2019 113th fynnkroeger 587 46 34ms 17 Oct 2022 121st kobaltz 574 47 34ms 8 Nov 2017 121st stevehodges 574 47 34ms 8 Nov 2017 121st iamsolarpowered 574 47 48ms 15 Dec 2017 121st babcockd 574 47 44ms 19 Dec 2017 121st Mikaeel66 574 47 47ms 10 Nov 2019 121st branch14 574 47 36ms 3 Aug 2020 121st maths22 🇺🇸 574 47 39ms 9 Dec 2020 121st HallMatthew314 574 47 40ms 10 Dec 2021 121st Edjyzod 574 47 36ms 3 Oct 2022 130th jacobsmith 563 48 43ms 15 Feb 2018 130th yokasuretsu 563 48 32ms 18 Apr 2018 130th Marcel-Brouette 563 48 35ms 26 Aug 2018 130th jamespeilunli 563 48 38ms 1 May 2022 134th alexkurowski 551 49 36ms 8 Nov 2017 134th Boostik 551 49 36ms 7 Jan 2018 134th chris-arsenault 551 49 35ms 2 Feb 2018 134th caerbannogwhite 551 49 34ms 13 Apr 2018 134th jetpks 551 49 46ms 27 Jun 2019 134th boxjelly 551 49 36ms 12 Feb 2021 134th RustemB 🇷🇺 551 49 35ms 4 May 2021 134th schachmattmatt 551 49 35ms 11 Aug 2021 142nd sstadick 540 50 35ms 24 Jan 2018 142nd sacthedev 540 50 36ms 3 Apr 2018 142nd tsundokul 540 50 32ms 6 Nov 2018 142nd atayarani 540 50 36ms 17 Jan 2019 142nd Noxilex 540 50 35ms 20 Mar 2019 142nd op-ecoprintq 540 50 36ms 31 Jul 2020 142nd eggplants 🇯🇵 540 50 42ms 26 Nov 2020 149th san-nat 529 51 35ms 12 Dec 2020 149th frnco 529 51 36ms 2 Jun 2022 First Prev 76–150 of 181 Next Last