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 Hilbert Curve 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth 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 Groovy 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 Harbour Hare Haxe Hush Hy iogii Knight Luau 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 Groovy 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 Harbour Hare Haxe Hush Hy iogii Knight Luau 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 Hilbert Curve 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 815th AZ9tumas 889 75 23 Oct 2022 815th EthanGrant1 889 75 7 Nov 2022 815th Omega65536 🇩🇪 889 75 24 Nov 2022 815th b10011 🇫🇮 889 75 3 Jan 2023 815th 4ndyJ 🇬🇧 889 75 3 Jan 2023 815th randolchance 889 75 8 Jan 2023 815th LeeCamp 889 75 12 Jan 2023 815th hellwue 889 75 15 Feb 2023 815th nandanjp 889 75 29 Mar 2023 815th kaptsanovb 889 75 20 Apr 2023 815th galloj 🇨🇿 889 75 20 May 2023 815th jhu04 889 75 23 Jun 2023 815th HelloYuiYui 889 75 1 Nov 2023 815th tobyLovick 889 75 10 Nov 2023 815th VictorStenvers 🇳🇱 889 75 13 Nov 2023 815th RZ781 889 75 19 Nov 2023 815th mikehanus 889 75 21 Nov 2023 815th 1231234md5 🇨🇳 889 75 14 Dec 2023 815th Hebelub 889 75 6 Jan 2024 815th minhtrancccp 889 75 11 Jan 2024 815th 123mjb 889 75 25 Jan 2024 815th jbjd 889 75 25 Feb 2024 815th gabe-gallegos 889 75 2 May 2024 815th kejcao 🇨🇦 889 75 11 May 2024 815th f-tucker 889 75 24 May 2024 815th Florian-Mt 889 75 22 Jul 2024 815th codingisgreatbutiamnot 889 75 9 Aug 2024 815th Terobero 889 75 23 Aug 2024 815th abhishekg999 889 75 17 Sep 2024 815th RedzGoose 🇦🇺 889 75 7 Oct 2024 815th Clay-Goodling 889 75 8 Oct 2024 815th JunkIce 889 75 5 Mar 2025 815th jiji7879 889 75 20 Jun 2025 815th faragocsaba 889 75 22 Jun 2025 815th bknower 889 75 30 Jun 2025 815th clayboll99 889 75 14 Jul 2025 862nd GrayJoKing 🇦🇺 889 77 13 Sep 2024 863rd m-tkach 🇺🇦 889 117 7 May 2022 863rd Lydxn 🇨🇦 889 117 7 May 2022 865th c0d3-4-F00d 🇩🇪 889 132 6 May 2022 865th madeforlosers 889 132 26 Oct 2023 865th Blockyheadman 889 132 1 Nov 2023 865th SpiritAxolotl 🇺🇸 889 132 20 Mar 2024 865th kmathis22 889 132 38 hours ago 870th mousetail 🇳🇱 888 41 25 days ago 871st primo-ppcg 🇹🇭 888 85 14 Jan 2025 871st MeWhenI 🇻🇦 888 85 21 Apr 2025 873rd canissimia 🇦🇶 888 204 25 Nov 2023 874th MeWhenI 🇻🇦 887 53 1 Jun 2022 874th stefangimmillaro 887 53 2 Oct 2022 874th Haksell 🇦🇶 887 53 22 Feb 2023 877th DialFrost 🇸🇬 887 56 21 days ago 878th Shanethegamer 🇺🇸 886 70 12 Dec 2022 878th Alessandro-Balconi 🇮🇹 886 70 26 Dec 2022 880th ovs-code 🇩🇪 886 73 22 Jul 2023 881st m-tkach 🇺🇦 886 112 22 Jun 2025 882nd jared-hughes 886 130 15 Dec 2024 883rd GolfingSuccess 🇬🇷 885 71 5 May 2022 883rd emplv 🇱🇻 885 71 5 May 2022 883rd JayXon 🇺🇸 885 71 7 May 2022 883rd nwellnhof 🇩🇪 885 71 5 Jun 2022 883rd stefangimmillaro 885 71 2 Jun 2023 883rd 09cf 885 71 4 Oct 2023 883rd kkoenig 885 71 21 Dec 2023 883rd sean-niemann 🇺🇸 885 71 10 Jul 2024 883rd masinag 🇮🇹 885 71 6 Oct 2024 892nd SiestaGuru 884 88 9 Jan 2023 892nd rifatx 884 88 5 Jul 2024 894th janbehrens 🇩🇪 884 90 21 Apr 2023 894th Yewzir 🇧🇪 884 90 22 Apr 2023 894th DialFrost 🇸🇬 884 90 6 Nov 2023 894th Ripick 884 90 27 Nov 2024 898th nipzu 884 94 17 May 2022 898th Natanaelel 🇸🇪 884 94 17 Jun 2022 898th nkoppel 884 94 19 Oct 2022 Prev 826–900 of 3,327 Next
