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 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 Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 290th ovs-code 🇩🇪 930 126 5 May 2022 290th 5quiwyrm 930 126 4 Sep 2022 290th KrausRaus 🇺🇸 930 126 9 Sep 2022 290th Betuaredead 930 126 5 Jan 2023 290th annaproxy 930 126 7 Jan 2023 290th Yewzir 🇧🇪 930 126 12 Feb 2023 290th Jacob385 930 126 4 Mar 2024 290th dokutan 930 126 17 Mar 2024 290th eMGeeneer 930 126 15 Jun 2024 290th mrondon8 930 126 2 Dec 2024 311th Natanaelel 🇸🇪 929 28 22 Jul 2022 311th SirBogman 🇺🇸 929 28 17 Sep 2022 313th ovs-code 🇩🇪 928 60 9 Oct 2023 313th GrayJoKing 🇦🇺 928 60 11 Oct 2023 313th Lydxn 🇨🇦 928 60 11 Oct 2023 313th GolfingSuccess 🇬🇷 928 60 16 Nov 2023 313th Steffan153 🇫🇮 928 60 28 Jan 2024 313th JayXon 🇺🇸 928 60 29 Jan 2024 313th rucin93 🇵🇱 928 60 10 Jul 2024 313th sean-niemann 🇺🇸 928 60 10 Jul 2024 321st MeWhenI 🇻🇦 928 68 23 Feb 2023 321st JayXon 🇺🇸 928 68 4 Mar 2025 323rd Lydxn 🇨🇦 928 70 17 Oct 2022 323rd JayXon 🇺🇸 928 70 17 Oct 2022 323rd GrayJoKing 🇦🇺 928 70 13 Jul 2024 323rd FlyingPenguin223 928 70 4 Oct 2024 323rd jipsong 🇩🇪 928 70 5 Apr 2025 328th sisyphus-ppcg 🇦🇺 927 50 31 Jan 2023 328th saito-ta 🇯🇵 927 50 12 Dec 2024 330th JayXon 🇺🇸 927 57 19 Aug 2024 331st Steffan153 🇫🇮 927 67 19 Aug 2024 331st JayXon 🇺🇸 927 67 19 Aug 2024 333rd roavin 926 84 23 Jun 2022 333rd tkr-sh 🇫🇷 926 84 20 Aug 2022 333rd Nickmiste 926 84 9 Nov 2022 333rd Matgc04 926 84 19 May 2023 333rd postie77 926 84 19 May 2023 333rd ertz1ertz 926 84 13 Sep 2024 333rd Grabnukebomb 926 84 13 Sep 2024 333rd Shanethegamer 🇺🇸 926 84 9 Apr 2025 333rd HumanoidCPU 926 84 10 Apr 2025 333rd annaproxy 926 84 11 Apr 2025 333rd Re-Adventures 🇮🇳 926 84 15 Apr 2025 333rd janbehrens 🇩🇪 926 84 17 Apr 2025 333rd fuzzylojik-golf 🇺🇸 926 84 28 May 2025 346th scpchicken 🇵🇼 925 72 4 May 2022 346th sultan 925 72 6 Jun 2022 346th annaproxy 925 72 22 Aug 2022 346th BlankSpruce 925 72 9 Sep 2022 346th ValentinCassayre 925 72 8 Oct 2022 346th commandblockguy 🇺🇸 925 72 3 Nov 2022 346th mathb0y512 925 72 1 Dec 2022 346th NoahBolohan 🇨🇦 925 72 28 Feb 2023 346th neel11235813 925 72 8 Mar 2023 346th Kacarott 🇦🇺 925 72 24 Mar 2023 346th Fracture17 925 72 8 Apr 2023 346th ayushdewan 925 72 7 May 2023 346th PeterTillema 🇳🇱 925 72 17 Oct 2023 346th Glinte 925 72 11 Dec 2023 346th nanatsu8 925 72 11 May 2024 346th thej10n 925 72 12 Jun 2024 346th duckyluuk 🇳🇱 925 72 13 Jun 2024 346th tobeannouncd 925 72 25 Apr 2025 364th ovs-code 🇩🇪 924 67 13 Dec 2022 364th Steffan153 🇫🇮 924 67 18 Dec 2022 364th Lydxn 🇨🇦 924 67 4 Feb 2023 364th sean-niemann 🇺🇸 924 67 7 Mar 2025 368th Bubbler-4 923 33 6 May 2022 368th rak1507 🇬🇧 923 33 8 May 2022 368th ngn 🇧🇬 923 33 11 May 2022 368th zacjl 923 33 3 Jun 2025 368th GrayJoKing 🇦🇺 923 33 4 Jun 2025 373rd Luca2812 923 127 12 Dec 2022 373rd plastic-bottle 923 127 13 Sep 2023 373rd h3ra993huskp 🇯🇵 923 127 17 Sep 2023 Prev 301–375 of 3,165 Next