Collatz in all languages 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 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 Transpose Sentence 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Topological Sort Trinomial Triangle 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Transpose Sentence 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Topological Sort Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 112th ndren 952 70 2 Aug 2023 112th bizy-coder 952 70 14 Aug 2023 112th janbehrens 🇩🇪 952 70 24 Nov 2023 112th namelessiw 952 70 9 Jan 2024 112th mathisfun271 952 70 13 Feb 2024 112th Just4FunCoder 952 70 17 Feb 2024 112th ThijsLuttikhuis 952 70 3 Mar 2024 112th elgan65536 952 70 5 Mar 2024 112th jtaxen 952 70 1 Apr 2024 112th HumanoidCPU 952 70 6 May 2024 112th abc7-12 952 70 6 May 2024 112th ahmetdemirag 🇨🇾 952 70 9 Jun 2024 112th FranklinJiaChen 952 70 4 Jul 2024 112th 5cw 🇺🇸 952 70 13 Jul 2024 112th CaedenHarper 🇨🇦 952 70 3 Aug 2024 112th emgordon154 952 70 5 Aug 2024 112th dokutan 952 70 9 Aug 2024 112th jatloe 952 70 26 Aug 2024 112th lgrandco 952 70 9 Oct 2024 112th snydej 952 70 21 Nov 2024 112th erikji 952 70 4 Feb 2025 112th CutSandstone 952 70 4 Feb 2025 112th Mukundan314 952 70 3 Apr 2025 112th albanian-laundromat 952 70 12 Apr 2025 112th xsot 🇸🇬 952 70 3 May 2025 112th fuzzylojik-golf 🇺🇸 952 70 27 days ago 112th smilesformiles3 952 70 26 days ago 112th KasperKivimaeki 🇫🇮 952 70 11 days ago 179th Lydxn 🇨🇦 952 89 6 May 2022 179th JayXon 🇺🇸 952 89 7 May 2022 179th nwellnhof 🇩🇪 952 89 5 Jun 2022 179th snyderek 🇺🇸 952 89 19 Feb 2025 183rd ovs-code 🇩🇪 949 61 5 Aug 2024 184th Lydxn 🇨🇦 949 82 6 May 2022 184th JayXon 🇺🇸 949 82 9 May 2022 186th Lydxn 🇨🇦 948 59 6 May 2022 187th Lydxn 🇨🇦 947 55 16 Jan 2024 187th ovs-code 🇩🇪 947 55 16 Jan 2024 187th Steffan153 🇫🇮 947 55 16 Jan 2024 187th kg583 🇺🇸 947 55 16 Feb 2024 187th Shanethegamer 🇺🇸 947 55 24 Mar 2024 187th pardouin 🇫🇷 947 55 30 Jun 2024 187th JayXon 🇺🇸 947 55 17 Aug 2024 187th sean-niemann 🇺🇸 947 55 24 Jan 2025 195th primo-ppcg 🇹🇭 946 49 5 May 2022 195th Lydxn 🇨🇦 946 49 8 May 2022 197th lyphyser 943 46 13 Jan 2024 197th AdrienHache 🇫🇷 943 46 9 Apr 2024 199th saito-ta 🇯🇵 943 49 13 May 2022 199th Lydxn 🇨🇦 943 49 28 May 2022 201st JayXon 🇺🇸 943 88 17 Oct 2022 201st acotis 943 88 9 Jun 2025 203rd JayXon 🇺🇸 942 69 17 Oct 2022 203rd Lydxn 🇨🇦 942 69 4 Feb 2023 205th canissimia 🇦🇶 940 50 5 May 2022 205th ovs-code 🇩🇪 940 50 7 May 2022 205th sisyphus-ppcg 🇦🇺 940 50 20 Feb 2023 205th Steffan153 🇫🇮 940 50 20 Jul 2024 205th sean-niemann 🇺🇸 940 50 9 Jun 2025 210th canissimia 🇦🇶 939 51 6 May 2022 210th Lydxn 🇨🇦 939 51 6 May 2022 210th primo-ppcg 🇹🇭 939 51 6 May 2022 210th pardouin 🇫🇷 939 51 12 Apr 2025 214th inventshah 938 57 4 May 2022 214th itsh01 938 57 17 May 2022 214th Natanaelel 🇸🇪 938 57 16 Jun 2022 214th Attero 🇸🇪 938 57 3 Aug 2022 214th SirFireball3521 938 57 26 Jan 2023 214th Kacarott 🇦🇺 938 57 24 Mar 2023 214th nathanadams 🇳🇿 938 57 24 Apr 2023 214th hacker112 🇸🇪 938 57 20 Jun 2024 214th thisishowmymindworks 🇳🇴 938 57 28 Jun 2024 214th Salutations45 938 57 18 Nov 2024 214th daniel-cardone 938 57 8 days ago 225th primo-ppcg 🇹🇭 938 58 13 Nov 2022 Prev 151–225 of 3,185 Next