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 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 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 790th Florian-Mt 888 75 22 Jul 2024 790th codingisgreatbutiamnot 888 75 9 Aug 2024 790th Terobero 888 75 23 Aug 2024 790th abhishekg999 888 75 17 Sep 2024 790th RedzGoose 🇦🇺 888 75 7 Oct 2024 790th Clay-Goodling 888 75 8 Oct 2024 790th JunkIce 888 75 5 Mar 2025 790th jiji7879 888 75 20 Jun 2025 790th faragocsaba 888 75 22 Jun 2025 790th bknower 888 75 30 Jun 2025 790th clayboll99 888 75 21 days ago 790th edsrzf 🇳🇿 888 75 5 days ago 838th c0d3-4-F00d 🇩🇪 888 132 6 May 2022 838th madeforlosers 888 132 26 Oct 2023 838th Blockyheadman 888 132 1 Nov 2023 838th SpiritAxolotl 🇺🇸 888 132 20 Mar 2024 842nd ovs-code 🇩🇪 888 151 9 Sep 2023 842nd Yewzir 🇧🇪 888 151 21 May 2024 844th canissimia 🇦🇶 888 204 25 Nov 2023 845th MeWhenI 🇻🇦 887 53 1 Jun 2022 845th stefangimmillaro 887 53 2 Oct 2022 845th Haksell 🇦🇶 887 53 22 Feb 2023 848th GolfingSuccess 🇬🇷 885 71 5 May 2022 848th emplv 🇱🇻 885 71 5 May 2022 848th JayXon 🇺🇸 885 71 7 May 2022 848th nwellnhof 🇩🇪 885 71 5 Jun 2022 848th stefangimmillaro 885 71 2 Jun 2023 848th 09cf 885 71 4 Oct 2023 848th kkoenig 885 71 21 Dec 2023 848th sean-niemann 🇺🇸 885 71 10 Jul 2024 848th masinag 🇮🇹 885 71 6 Oct 2024 848th KasperKivimaeki 🇫🇮 885 71 27 Mar 2025 858th primo-ppcg 🇹🇭 885 85 14 Jan 2025 858th MeWhenI 🇻🇦 885 85 21 Apr 2025 860th m-tkach 🇺🇦 885 117 7 May 2022 860th Lydxn 🇨🇦 885 117 7 May 2022 862nd Shanethegamer 🇺🇸 884 70 12 Dec 2022 862nd Alessandro-Balconi 🇮🇹 884 70 26 Dec 2022 864th SiestaGuru 884 88 9 Jan 2023 864th rifatx 884 88 5 Jul 2024 866th janbehrens 🇩🇪 884 90 21 Apr 2023 866th Yewzir 🇧🇪 884 90 22 Apr 2023 866th DialFrost 🇸🇬 884 90 6 Nov 2023 866th Ripick 884 90 27 Nov 2024 870th m-tkach 🇺🇦 884 112 22 Jun 2025 871st jared-hughes 884 130 15 Dec 2024 872nd m-tkach 🇺🇦 883 59 21 Jan 2024 872nd GolfingSuccess 🇬🇷 883 59 20 Jan 2025 874th ovs-code 🇩🇪 883 73 22 Jul 2023 875th nipzu 883 94 17 May 2022 875th Natanaelel 🇸🇪 883 94 17 Jun 2022 875th nkoppel 883 94 19 Oct 2022 875th ovs-code 🇩🇪 883 94 21 Jun 2023 875th mousetail 🇳🇱 883 94 12 Jan 2024 880th Shanethegamer 🇺🇸 882 51 15 May 2023 881st steffan-polygolf 882 74 14 Feb 2024 882nd Irratix 🇳🇱 882 96 4 May 2022 882nd MeWhenI 🇻🇦 882 96 1 Jun 2022 882nd janbehrens 🇩🇪 882 96 21 Apr 2023 882nd Shanethegamer 🇺🇸 882 96 15 May 2023 882nd Yewzir 🇧🇪 882 96 11 Nov 2023 882nd MateuszPietrzak 🇵🇱 882 96 18 Nov 2023 882nd kkoenig 882 96 21 Dec 2023 882nd BlankSpruce 882 96 20 Aug 2024 882nd fuzzylojik-golf 🇺🇸 882 96 14 Jun 2025 891st ravnskjaer 🇩🇰 882 133 11 Sep 2024 892nd Shanethegamer 🇺🇸 882 152 9 Sep 2023 892nd emgordon154 882 152 2 Oct 2024 892nd DialFrost 🇸🇬 882 152 27 Oct 2024 895th GrayJoKing 🇦🇺 881 60 24 Oct 2024 896th kg583 🇺🇸 881 84 5 days ago 897th GrayJoKing 🇦🇺 879 84 19 Jun 2022 897th primo-ppcg 🇹🇭 879 84 29 Jun 2022 899th Shanethegamer 🇺🇸 879 142 27 Mar 2025 899th DialFrost 🇸🇬 879 142 28 Mar 2025 Prev 826–900 of 3,225 Next