Evil Numbers in Ruby in chars. 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 Chars Time Submitted 72nd tatzyr 🇯🇵 684 38 35ms 8 Jan 2025 72nd ejini6969 684 38 36ms 13 Jun 2025 78th n1LS 667 39 38ms 2 Oct 2019 78th ajc2 667 39 38ms 18 Oct 2019 78th AlephSquirrel 667 39 35ms 7 Mar 2023 78th vluyzvg 667 39 32ms 30 Mar 2023 78th LostSyntax21 🇬🇧 667 39 35ms 23 Aug 2024 78th Lv0Sys 🇵🇱 667 39 35ms 26 May 2025 78th snoozingnewt 🇺🇸 667 39 36ms 14 Sep 2025 85th aydamak 650 40 37ms 15 May 2024 86th robymus 634 41 34ms 17 Sep 2018 87th biinari 619 42 36ms 27 Mar 2018 87th adoxography 619 42 39ms 22 Jul 2018 87th jstanley0 619 42 49ms 12 Dec 2020 87th rucin93 🇵🇱 619 42 34ms 14 May 2025 87th Babafaba 619 42 32ms 17 days ago 92nd ConorOBrien-Foxx 605 43 47ms 10 Apr 2018 92nd nlc 605 43 48ms 11 Apr 2018 92nd reireias 605 43 35ms 30 Jul 2019 92nd handisb 605 43 49ms 14 Sep 2019 92nd mogron 605 43 40ms 13 Dec 2019 92nd dwayneparton 605 43 43ms 8 May 2020 92nd Michaelncallahan 605 43 44ms 8 May 2020 92nd aksyristos 605 43 37ms 31 Jan 2023 100th snltd 591 44 35ms 14 Aug 2019 100th sapphyrus 591 44 35ms 18 Feb 2020 100th meenie 591 44 37ms 1 Jan 2021 100th Pluviolithic 591 44 45ms 17 Oct 2023 104th tom-lord 578 45 31ms 8 Nov 2017 104th clupasq 578 45 35ms 3 Feb 2018 104th biji1 578 45 36ms 26 Apr 2018 104th atsushiootani 578 45 34ms 7 Aug 2018 104th 0xddom 578 45 35ms 18 Dec 2019 104th tadd 578 45 34ms 16 Apr 2020 104th Secozzi 578 45 34ms 21 Oct 2020 104th Luj8n 578 45 35ms 12 Nov 2021 104th badboj40 578 45 42ms 14 Feb 2023 113th rlue 565 46 35ms 8 Nov 2017 113th basuneko 565 46 39ms 8 Nov 2017 113th JeremyC-za 565 46 35ms 10 Nov 2017 113th Yytsi 565 46 35ms 14 Mar 2019 113th TFeld00 🇩🇰 565 46 34ms 6 Jun 2019 113th th0rex 565 46 31ms 10 Jun 2019 113th Mir0ff944 565 46 37ms 23 Oct 2019 113th fynnkroeger 565 46 34ms 17 Oct 2022 121st kobaltz 553 47 34ms 8 Nov 2017 121st stevehodges 553 47 34ms 8 Nov 2017 121st iamsolarpowered 553 47 48ms 15 Dec 2017 121st babcockd 553 47 44ms 19 Dec 2017 121st Mikaeel66 553 47 47ms 10 Nov 2019 121st branch14 553 47 36ms 3 Aug 2020 121st maths22 🇺🇸 553 47 39ms 9 Dec 2020 121st HallMatthew314 553 47 40ms 10 Dec 2021 121st Edjyzod 553 47 36ms 3 Oct 2022 130th jacobsmith 542 48 43ms 15 Feb 2018 130th yokasuretsu 542 48 32ms 18 Apr 2018 130th Marcel-Brouette 542 48 35ms 26 Aug 2018 130th jamespeilunli 542 48 38ms 1 May 2022 134th alexkurowski 531 49 36ms 8 Nov 2017 134th Boostik 531 49 36ms 7 Jan 2018 134th chris-arsenault 531 49 35ms 2 Feb 2018 134th caerbannogwhite 531 49 34ms 13 Apr 2018 134th jetpks 531 49 46ms 27 Jun 2019 134th boxjelly 531 49 36ms 12 Feb 2021 134th RustemB 🇷🇺 531 49 35ms 4 May 2021 134th schachmattmatt 531 49 35ms 11 Aug 2021 142nd sstadick 520 50 35ms 24 Jan 2018 142nd sacthedev 520 50 36ms 3 Apr 2018 142nd tsundokul 520 50 32ms 6 Nov 2018 142nd atayarani 520 50 36ms 17 Jan 2019 142nd Noxilex 520 50 35ms 20 Mar 2019 142nd op-ecoprintq 520 50 36ms 31 Jul 2020 142nd eggplants 🇯🇵 520 50 42ms 26 Nov 2020 149th san-nat 510 51 35ms 12 Dec 2020 149th frnco 510 51 36ms 2 Jun 2022 First Prev 76–150 of 181 Next Last