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 291st ScottHamper 930 126 5 May 2022 291st ovs-code 🇩🇪 930 126 5 May 2022 291st 5quiwyrm 930 126 4 Sep 2022 291st KrausRaus 🇺🇸 930 126 9 Sep 2022 291st Betuaredead 930 126 5 Jan 2023 291st annaproxy 930 126 7 Jan 2023 291st Yewzir 🇧🇪 930 126 12 Feb 2023 291st Jacob385 930 126 4 Mar 2024 291st dokutan 930 126 17 Mar 2024 291st eMGeeneer 930 126 15 Jun 2024 291st mrondon8 930 126 2 Dec 2024 312th Natanaelel 🇸🇪 929 28 22 Jul 2022 312th SirBogman 🇺🇸 929 28 17 Sep 2022 314th ovs-code 🇩🇪 929 60 9 Oct 2023 314th GrayJoKing 🇦🇺 929 60 11 Oct 2023 314th Lydxn 🇨🇦 929 60 11 Oct 2023 314th GolfingSuccess 🇬🇷 929 60 16 Nov 2023 314th Steffan153 🇫🇮 929 60 28 Jan 2024 314th JayXon 🇺🇸 929 60 29 Jan 2024 314th rucin93 🇵🇱 929 60 10 Jul 2024 314th sean-niemann 🇺🇸 929 60 10 Jul 2024 322nd MeWhenI 🇻🇦 929 68 23 Feb 2023 322nd JayXon 🇺🇸 929 68 4 Mar 2025 324th GrayJoKing 🇦🇺 929 70 13 Jul 2024 324th FlyingPenguin223 929 70 4 Oct 2024 324th jipsong 🇩🇪 929 70 5 Apr 2025 327th Lydxn 🇨🇦 928 70 17 Oct 2022 327th JayXon 🇺🇸 928 70 17 Oct 2022 329th sisyphus-ppcg 🇦🇺 927 50 31 Jan 2023 329th saito-ta 🇯🇵 927 50 12 Dec 2024 331st JayXon 🇺🇸 927 57 19 Aug 2024 332nd Steffan153 🇫🇮 927 67 19 Aug 2024 332nd JayXon 🇺🇸 927 67 19 Aug 2024 334th roavin 926 84 23 Jun 2022 334th tkr-sh 🇫🇷 926 84 20 Aug 2022 334th Nickmiste 926 84 9 Nov 2022 334th Matgc04 926 84 19 May 2023 334th postie77 926 84 19 May 2023 334th ertz1ertz 926 84 13 Sep 2024 334th Grabnukebomb 926 84 13 Sep 2024 334th Shanethegamer 🇺🇸 926 84 9 Apr 2025 334th HumanoidCPU 926 84 10 Apr 2025 334th annaproxy 926 84 11 Apr 2025 334th Re-Adventures 🇮🇳 926 84 15 Apr 2025 334th janbehrens 🇩🇪 926 84 17 Apr 2025 334th fuzzylojik-golf 🇺🇸 926 84 28 May 2025 347th scpchicken 🇵🇼 925 72 4 May 2022 347th sultan 925 72 6 Jun 2022 347th annaproxy 925 72 22 Aug 2022 347th BlankSpruce 925 72 9 Sep 2022 347th ValentinCassayre 925 72 8 Oct 2022 347th commandblockguy 🇺🇸 925 72 3 Nov 2022 347th mathb0y512 925 72 1 Dec 2022 347th NoahBolohan 🇨🇦 925 72 28 Feb 2023 347th neel11235813 925 72 8 Mar 2023 347th Kacarott 🇦🇺 925 72 24 Mar 2023 347th Fracture17 925 72 8 Apr 2023 347th ayushdewan 925 72 7 May 2023 347th PeterTillema 🇳🇱 925 72 17 Oct 2023 347th Glinte 925 72 11 Dec 2023 347th nanatsu8 925 72 11 May 2024 347th thej10n 925 72 12 Jun 2024 347th duckyluuk 🇳🇱 925 72 13 Jun 2024 347th tobeannouncd 925 72 25 Apr 2025 365th ovs-code 🇩🇪 924 67 13 Dec 2022 365th Steffan153 🇫🇮 924 67 18 Dec 2022 365th Lydxn 🇨🇦 924 67 4 Feb 2023 365th sean-niemann 🇺🇸 924 67 7 Mar 2025 369th Bubbler-4 923 33 6 May 2022 369th rak1507 🇬🇧 923 33 8 May 2022 369th ngn 🇧🇬 923 33 11 May 2022 369th zacjl 923 33 3 Jun 2025 369th GrayJoKing 🇦🇺 923 33 4 Jun 2025 374th Luca2812 923 127 12 Dec 2022 374th plastic-bottle 923 127 13 Sep 2023 Prev 301–375 of 3,185 Next