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 Topological Sort 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 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 Knight 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 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 Knight 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 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 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 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 14 Jun 2025 112th smilesformiles3 952 70 14 Jun 2025 112th KasperKivimaeki 🇫🇮 952 70 30 Jun 2025 112th adaGrad1 952 70 7 days ago 112th EthanJantz 952 70 7 days ago 112th qpwoeirut 952 70 7 days ago 112th katss2 952 70 3 hours ago 183rd Lydxn 🇨🇦 952 89 6 May 2022 183rd JayXon 🇺🇸 952 89 7 May 2022 183rd nwellnhof 🇩🇪 952 89 5 Jun 2022 183rd snyderek 🇺🇸 952 89 19 Feb 2025 187th ovs-code 🇩🇪 949 61 5 Aug 2024 188th Lydxn 🇨🇦 949 82 6 May 2022 188th JayXon 🇺🇸 949 82 9 May 2022 190th Lydxn 🇨🇦 948 59 6 May 2022 191st Lydxn 🇨🇦 947 55 16 Jan 2024 191st ovs-code 🇩🇪 947 55 16 Jan 2024 191st Steffan153 🇫🇮 947 55 16 Jan 2024 191st kg583 🇺🇸 947 55 16 Feb 2024 191st Shanethegamer 🇺🇸 947 55 24 Mar 2024 191st pardouin 🇫🇷 947 55 30 Jun 2024 191st JayXon 🇺🇸 947 55 17 Aug 2024 191st sean-niemann 🇺🇸 947 55 24 Jan 2025 199th primo-ppcg 🇹🇭 946 49 5 May 2022 199th Lydxn 🇨🇦 946 49 8 May 2022 201st JayXon 🇺🇸 944 88 17 Oct 2022 201st acotis 944 88 9 Jun 2025 203rd lyphyser 943 46 13 Jan 2024 203rd AdrienHache 🇫🇷 943 46 9 Apr 2024 205th saito-ta 🇯🇵 943 49 13 May 2022 205th Lydxn 🇨🇦 943 49 28 May 2022 207th JayXon 🇺🇸 942 69 17 Oct 2022 207th Lydxn 🇨🇦 942 69 4 Feb 2023 209th canissimia 🇦🇶 940 50 5 May 2022 209th ovs-code 🇩🇪 940 50 7 May 2022 209th sisyphus-ppcg 🇦🇺 940 50 20 Feb 2023 209th Steffan153 🇫🇮 940 50 20 Jul 2024 209th sean-niemann 🇺🇸 940 50 9 Jun 2025 214th canissimia 🇦🇶 939 51 6 May 2022 214th Lydxn 🇨🇦 939 51 6 May 2022 214th primo-ppcg 🇹🇭 939 51 6 May 2022 214th pardouin 🇫🇷 939 51 12 Apr 2025 218th inventshah 938 57 4 May 2022 218th itsh01 938 57 17 May 2022 218th Natanaelel 🇸🇪 938 57 16 Jun 2022 218th Attero 🇸🇪 938 57 3 Aug 2022 218th SirFireball3521 938 57 26 Jan 2023 218th Kacarott 🇦🇺 938 57 24 Mar 2023 218th nathanadams 🇳🇿 938 57 24 Apr 2023 218th hacker112 🇸🇪 938 57 20 Jun 2024 Prev 151–225 of 3,269 Next