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 294th sean-niemann 🇺🇸 931 126 4 May 2022 294th nwellnhof 🇩🇪 931 126 4 May 2022 294th Shanethegamer 🇺🇸 931 126 4 May 2022 294th ScottHamper 931 126 5 May 2022 294th ovs-code 🇩🇪 931 126 5 May 2022 294th 5quiwyrm 931 126 4 Sep 2022 294th KrausRaus 🇺🇸 931 126 9 Sep 2022 294th Betuaredead 931 126 5 Jan 2023 294th annaproxy 931 126 7 Jan 2023 294th Yewzir 🇧🇪 931 126 12 Feb 2023 294th Jacob385 931 126 4 Mar 2024 294th dokutan 931 126 17 Mar 2024 294th eMGeeneer 931 126 15 Jun 2024 294th mrondon8 931 126 2 Dec 2024 315th GrayJoKing 🇦🇺 930 56 15 Jan 2024 315th AlephSquirrel 930 56 21 Jan 2024 317th MeWhenI 🇻🇦 930 68 23 Feb 2023 317th JayXon 🇺🇸 930 68 4 Mar 2025 319th Natanaelel 🇸🇪 929 28 22 Jul 2022 319th SirBogman 🇺🇸 929 28 17 Sep 2022 321st ovs-code 🇩🇪 929 60 9 Oct 2023 321st GrayJoKing 🇦🇺 929 60 11 Oct 2023 321st Lydxn 🇨🇦 929 60 11 Oct 2023 321st GolfingSuccess 🇬🇷 929 60 16 Nov 2023 321st Steffan153 🇫🇮 929 60 28 Jan 2024 321st JayXon 🇺🇸 929 60 29 Jan 2024 321st rucin93 🇵🇱 929 60 10 Jul 2024 321st sean-niemann 🇺🇸 929 60 10 Jul 2024 329th Lydxn 🇨🇦 929 70 17 Oct 2022 329th JayXon 🇺🇸 929 70 17 Oct 2022 329th GrayJoKing 🇦🇺 929 70 13 Jul 2024 329th FlyingPenguin223 929 70 4 Oct 2024 329th jipsong 🇩🇪 929 70 5 Apr 2025 334th Steffan153 🇫🇮 928 67 19 Aug 2024 334th JayXon 🇺🇸 928 67 19 Aug 2024 336th sisyphus-ppcg 🇦🇺 927 50 31 Jan 2023 336th saito-ta 🇯🇵 927 50 12 Dec 2024 338th JayXon 🇺🇸 927 57 19 Aug 2024 339th roavin 926 84 23 Jun 2022 339th tkr-sh 🇫🇷 926 84 20 Aug 2022 339th Nickmiste 926 84 9 Nov 2022 339th Matgc04 926 84 19 May 2023 339th postie77 926 84 19 May 2023 339th ertz1ertz 926 84 13 Sep 2024 339th Grabnukebomb 926 84 13 Sep 2024 339th Shanethegamer 🇺🇸 926 84 9 Apr 2025 339th HumanoidCPU 926 84 10 Apr 2025 339th annaproxy 926 84 11 Apr 2025 339th Re-Adventures 🇮🇳 926 84 15 Apr 2025 339th janbehrens 🇩🇪 926 84 17 Apr 2025 339th fuzzylojik-golf 🇺🇸 926 84 28 May 2025 352nd scpchicken 🇵🇼 925 72 4 May 2022 352nd sultan 925 72 6 Jun 2022 352nd annaproxy 925 72 22 Aug 2022 352nd BlankSpruce 925 72 9 Sep 2022 352nd ValentinCassayre 925 72 8 Oct 2022 352nd commandblockguy 🇺🇸 925 72 3 Nov 2022 352nd mathb0y512 925 72 1 Dec 2022 352nd NoahBolohan 🇨🇦 925 72 28 Feb 2023 352nd neel11235813 925 72 8 Mar 2023 352nd Kacarott 🇦🇺 925 72 24 Mar 2023 352nd Fracture17 925 72 8 Apr 2023 352nd ayushdewan 925 72 7 May 2023 352nd PeterTillema 🇳🇱 925 72 17 Oct 2023 352nd Glinte 925 72 11 Dec 2023 352nd nanatsu8 925 72 11 May 2024 352nd thej10n 925 72 12 Jun 2024 352nd duckyluuk 🇳🇱 925 72 13 Jun 2024 352nd tobeannouncd 925 72 25 Apr 2025 352nd YAJUE114514 925 72 4 days ago 371st ovs-code 🇩🇪 924 67 13 Dec 2022 371st Steffan153 🇫🇮 924 67 18 Dec 2022 371st Lydxn 🇨🇦 924 67 4 Feb 2023 371st sean-niemann 🇺🇸 924 67 7 Mar 2025 375th Bubbler-4 923 33 6 May 2022 Prev 301–375 of 3,272 Next