Collatz 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 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 Rectangle Fill 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 1st Lydxn 🇨🇦 1,000 49 56ms 4 May 2022 1st JayXon 🇺🇸 1,000 49 65ms 17 Oct 2022 1st GrayJoKing 🇦🇺 1,000 49 54ms 15 Nov 2022 1st radarek 🇵🇱 1,000 49 343ms 26 Aug 2025 5th canissimia 🇦🇶 980 50 49ms 5 May 2022 5th ovs-code 🇩🇪 980 50 269ms 7 May 2022 5th sisyphus-ppcg 🇦🇺 980 50 42ms 20 Feb 2023 5th Steffan153 🇫🇮 980 50 44ms 20 Jul 2024 5th sean-niemann 🇺🇸 980 50 46ms 9 Jun 2025 5th pardouin 🇫🇷 980 50 40ms 22 Aug 2025 11th nwellnhof 🇩🇪 961 51 52ms 4 May 2022 11th primo-ppcg 🇹🇭 961 51 60ms 6 May 2022 11th janlelis 961 51 62ms 10 May 2022 11th Natanaelel 🇸🇪 961 51 40ms 2 Jun 2022 11th blaztoma 🇱🇹 961 51 38ms 5 days ago 16th shinh 942 52 54ms 29 Jun 2022 16th MeWhenI 🇻🇦 942 52 86ms 25 Jul 2023 18th stefangimmillaro 925 53 45ms 2 Oct 2022 18th Haksell 🇦🇶 925 53 75ms 22 Feb 2023 20th Andriamanitra 🇫🇮 907 54 66ms 21 Jul 2022 20th jared-hughes 907 54 58ms 12 Sep 2022 20th OhmNomNom 907 54 62ms 7 Oct 2022 20th olleicua 🇺🇸 907 54 57ms 21 Jan 2024 20th LostSyntax21 🇬🇧 907 54 48ms 12 Mar 2025 20th AbrahamJLR 🇻🇪 907 54 47ms 4 Jun 2025 20th vishal-mohanty 907 54 40ms 25 Aug 2025 27th SirBogman 🇺🇸 891 55 55ms 5 May 2022 27th olivermrose 🇺🇸 891 55 58ms 6 May 2022 27th 4hg 🇺🇸 891 55 49ms 24 Aug 2022 27th DialFrost 🇸🇬 891 55 48ms 1 Jan 2023 27th error256 891 55 60ms 4 May 2024 32nd ChiefChippy2 875 56 47ms 4 May 2022 32nd aksyristos 875 56 52ms 29 Jan 2023 32nd anter69 🇭🇺 875 56 41ms 12 Feb 2024 32nd 3dm4n 🇫🇮 875 56 42ms 11 Mar 2024 32nd lgrandco 875 56 39ms 9 Oct 2024 32nd tatzyr 🇯🇵 875 56 46ms 10 Dec 2024 32nd D-MOVE 🇵🇭 875 56 41ms 8 Dec 2025 32nd denkyuu1 875 56 47ms 11 Feb 2026 40th Irratix 🇳🇱 860 57 70ms 29 Jun 2022 40th lacrosse 860 57 46ms 27 Nov 2025 42nd tkr-sh 🇰🇵 845 58 52ms 8 Sep 2022 42nd annaproxy 845 58 48ms 15 Sep 2023 42nd Shanethegamer 🇺🇸 845 58 60ms 25 Dec 2023 42nd emgordon154 845 58 44ms 26 Jul 2024 46th rniii 831 59 51ms 26 Mar 2024 46th dokutan 831 59 46ms 19 Oct 2024 46th ejini6969 831 59 54ms 13 Jun 2025 46th Laellekoenig 831 59 41ms 6 Nov 2025 50th DaCuteRaccoon 817 60 57ms 5 May 2022 50th razetime 817 60 62ms 22 Aug 2022 50th janbehrens 🇩🇪 817 60 49ms 17 May 2023 50th KatieLG 🇬🇧 817 60 54ms 2 Oct 2025 54th fynnkroeger 803 61 63ms 6 Jan 2023 54th aaronze 🇦🇺 803 61 52ms 17 Sep 2023 56th purp 790 62 44ms 13 Aug 2022 57th RuyiLi 778 63 62ms 21 Feb 2024 58th Waffle3z 766 64 51ms 6 May 2022 58th snoozingnewt 🇨🇦 766 64 44ms 25 Oct 2025 60th TheZwierzLF 🇵🇱 754 65 44ms 6 Jan 2026 61st Feniske 🇫🇷 742 66 65ms 8 Oct 2022 62nd adoxography 721 68 60ms 2 Mar 2024 63rd vrnprkh 700 70 50ms 30 Mar 2023 63rd truisseaux 700 70 41ms 12 Apr 2024 65th pfysches-boop 690 71 63ms 6 Aug 2023 65th madeforlosers 690 71 60ms 7 Nov 2024 67th beergit 681 72 40ms 7 Aug 2024 68th Ohh-n 671 73 39ms 9 Aug 2025 69th jamespeilunli 653 75 50ms 4 Jul 2022 70th kmathis22 628 78 38ms 5 Sep 2025 71st hollma 605 81 47ms 20 Oct 2023 72nd catflip 590 83 59ms 30 Nov 2023 73rd msbranicky 576 85 57ms 10 Oct 2023 74th Betuaredead 527 93 53ms 5 Jan 2023 75th yobatm 500 98 39ms 22 Aug 2025 76th sreedevk 🇺🇸 485 101 49ms 4 Dec 2022 77th HumanoidCPU 30 1,637 36ms 26 Dec 2024 78th JRaspass 🇬🇧 15 3,231 40ms 4 May 2022 78th KatieLG-Transpiler 🇬🇧 15 3,231 64ms 24 Jun 2022 78th retrohun 15 3,231 50ms 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