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 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 117th fgrosshans 🇫🇷 952 70 5 May 2023 117th Shanethegamer 🇺🇸 952 70 25 May 2023 117th InigoK 🇺🇸 952 70 14 Jun 2023 117th quimey 952 70 15 Jun 2023 117th CornerMercury 🇬🇧 952 70 19 Jun 2023 117th ndren 952 70 2 Aug 2023 117th bizy-coder 952 70 14 Aug 2023 117th janbehrens 🇩🇪 952 70 24 Nov 2023 117th namelessiw 952 70 9 Jan 2024 117th mathisfun271 952 70 13 Feb 2024 117th Just4FunCoder 952 70 17 Feb 2024 117th ThijsLuttikhuis 952 70 3 Mar 2024 117th elgan65536 952 70 5 Mar 2024 117th jtaxen 952 70 1 Apr 2024 117th HumanoidCPU 952 70 6 May 2024 117th abc7-12 952 70 6 May 2024 117th ahmetdemirag 🇨🇾 952 70 9 Jun 2024 117th FranklinJiaChen 952 70 4 Jul 2024 117th 5cw 🇺🇸 952 70 13 Jul 2024 117th CaedenHarper 🇨🇦 952 70 3 Aug 2024 117th emgordon154 952 70 5 Aug 2024 117th dokutan 952 70 9 Aug 2024 117th jatloe 952 70 26 Aug 2024 117th lgrandco 952 70 9 Oct 2024 117th snydej 952 70 21 Nov 2024 117th erikji 952 70 4 Feb 2025 117th CutSandstone 952 70 4 Feb 2025 117th Mukundan314 952 70 3 Apr 2025 117th albanian-laundromat 952 70 12 Apr 2025 117th xsot 🇸🇬 952 70 3 May 2025 117th fuzzylojik-golf 🇺🇸 952 70 14 Jun 2025 117th smilesformiles3 952 70 14 Jun 2025 117th KasperKivimaeki 🇫🇮 952 70 30 Jun 2025 117th adaGrad1 952 70 10 Aug 2025 117th EthanJantz 952 70 10 Aug 2025 117th qpwoeirut 952 70 10 Aug 2025 117th katss2 952 70 17 Aug 2025 117th intgrah 952 70 11 days ago 189th Lydxn 🇨🇦 952 89 6 May 2022 189th JayXon 🇺🇸 952 89 7 May 2022 189th nwellnhof 🇩🇪 952 89 5 Jun 2022 189th snyderek 🇺🇸 952 89 19 Feb 2025 193rd ovs-code 🇩🇪 950 61 5 Aug 2024 194th Lydxn 🇨🇦 949 59 6 May 2022 195th Lydxn 🇨🇦 949 82 6 May 2022 195th JayXon 🇺🇸 949 82 9 May 2022 197th primo-ppcg 🇹🇭 947 49 5 May 2022 197th Lydxn 🇨🇦 947 49 8 May 2022 199th Lydxn 🇨🇦 947 55 16 Jan 2024 199th ovs-code 🇩🇪 947 55 16 Jan 2024 199th Steffan153 🇫🇮 947 55 16 Jan 2024 199th kg583 🇺🇸 947 55 16 Feb 2024 199th Shanethegamer 🇺🇸 947 55 24 Mar 2024 199th pardouin 🇫🇷 947 55 30 Jun 2024 199th JayXon 🇺🇸 947 55 17 Aug 2024 199th sean-niemann 🇺🇸 947 55 24 Jan 2025 207th JayXon 🇺🇸 946 88 10 days ago 208th lyphyser 945 46 13 Jan 2024 208th AdrienHache 🇫🇷 945 46 9 Apr 2024 210th saito-ta 🇯🇵 944 49 13 May 2022 210th Lydxn 🇨🇦 944 49 28 May 2022 212th JayXon 🇺🇸 944 88 17 Oct 2022 212th acotis 944 88 9 Jun 2025 214th JayXon 🇺🇸 943 69 17 Oct 2022 214th Lydxn 🇨🇦 943 69 4 Feb 2023 216th canissimia 🇦🇶 941 50 5 May 2022 216th ovs-code 🇩🇪 941 50 7 May 2022 216th sisyphus-ppcg 🇦🇺 941 50 20 Feb 2023 216th Steffan153 🇫🇮 941 50 20 Jul 2024 216th sean-niemann 🇺🇸 941 50 9 Jun 2025 216th pardouin 🇫🇷 941 50 22 Aug 2025 222nd canissimia 🇦🇶 940 51 6 May 2022 222nd Lydxn 🇨🇦 940 51 6 May 2022 222nd primo-ppcg 🇹🇭 940 51 6 May 2022 222nd pardouin 🇫🇷 940 51 12 Apr 2025 First Prev 151–225 of 3,378 Next Last