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 Minesweeper 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 Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi 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 Minesweeper 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 Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 525th zygoloid 902 94 54ms 5 Aug 2024 527th SirBogman 🇺🇸 900 50 414ms 5 May 2022 527th nwellnhof 🇩🇪 900 50 429ms 3 Jun 2022 527th Lydxn 🇨🇦 900 50 415ms 15 Aug 2022 527th Steffan153 🇫🇮 900 50 448ms 9 Aug 2024 531st Lydxn 🇨🇦 900 108 260ms 6 May 2022 531st CaedenHarper 🇨🇦 900 108 256ms 5 Oct 2025 533rd DialFrost 🇸🇬 899 69 94ms 15 Jul 2024 534th scpchicken 🇵🇼 899 72 21ms 4 May 2022 534th sultan 899 72 16ms 6 Jun 2022 534th annaproxy 899 72 23ms 22 Aug 2022 534th BlankSpruce 899 72 40ms 9 Sep 2022 534th ValentinCassayre 899 72 21ms 8 Oct 2022 534th commandblockguy 🇺🇸 899 72 23ms 3 Nov 2022 534th mathb0y512 899 72 27ms 1 Dec 2022 534th NoahBolohan 🇨🇦 899 72 23ms 28 Feb 2023 534th neel11235813 899 72 22ms 8 Mar 2023 534th Kacarott 🇦🇺 899 72 17ms 24 Mar 2023 534th Fracture17 899 72 21ms 8 Apr 2023 534th ayushdewan 899 72 29ms 7 May 2023 534th PeterTillema 🇳🇱 899 72 22ms 17 Oct 2023 534th Glinte 899 72 35ms 11 Dec 2023 534th nanatsu8 899 72 26ms 11 May 2024 534th thej10n 899 72 23ms 12 Jun 2024 534th duckyluuk 🇳🇱 899 72 21ms 13 Jun 2024 534th tobeannouncd 899 72 22ms 25 Apr 2025 534th YAJUE114514 899 72 17ms 15 Aug 2025 534th blaztoma 🇱🇹 899 72 39ms 26 Sep 2025 554th Lydxn 🇨🇦 898 48 285ms 5 May 2022 554th p-zubieta 898 48 249ms 6 Mar 2024 556th GrayJoKing 🇦🇺 898 70 2ms 6 May 2022 556th saito-ta 🇯🇵 898 70 3ms 21 Dec 2023 556th ovs-code 🇩🇪 898 70 2ms 17 Feb 2024 556th trinityy-7 898 70 2ms 7 Aug 2025 556th KasperKivimaeki 🇫🇮 898 70 6ms 8 Aug 2025 561st Lydxn 🇨🇦 898 72 302ms 16 Jul 2023 562nd edsrzf 🇳🇿 898 78 12ms 26 Oct 2024 562nd kg583 🇺🇸 898 78 11ms 25 Sep 2025 564th GrayJoKing 🇦🇺 898 91 31ms 19 Jan 2023 565th DialFrost 🇸🇬 897 29 162ms 15 Mar 2025 566th Steffan153 🇫🇮 897 59 137ms 10 Aug 2024 566th rucin93 🇵🇱 897 59 136ms 13 Oct 2024 566th sean-niemann 🇺🇸 897 59 137ms 13 Oct 2024 566th lukegustafson 🇺🇸 897 59 135ms 24 Oct 2024 570th Ripick 896 73 121ms 8 May 2023 571st ovs-code 🇩🇪 896 89 457ms 24 Jul 2024 571st jipsong 🇩🇪 896 89 467ms 7 Apr 2025 573rd MichalMarsalek 🇨🇿 895 87 334ms 5 May 2022 573rd Kloppermand 🇩🇰 895 87 343ms 7 Oct 2022 573rd bwat2 895 87 321ms 6 Apr 2023 576th oeb25 894 93 152ms 16 May 2022 576th snobee 🇨🇦 894 93 155ms 8 Dec 2022 576th logvp 894 93 130ms 2 Jan 2024 576th elgan65536 894 93 124ms 5 Mar 2024 576th smartiel 894 93 120ms 12 Aug 2024 576th trist224 🇫🇷 894 93 126ms 12 Aug 2024 576th nullie 894 93 126ms 19 Dec 2024 576th lolgeny 894 93 128ms 22 Feb 2025 584th Shanethegamer 🇺🇸 893 61 6ms 31 Oct 2022 584th MeWhenI 🇻🇦 893 61 5ms 4 Nov 2022 586th JayXon 🇺🇸 893 74 3,078ms 14 Nov 2024 587th GolfingSuccess 🇬🇷 893 95 54ms 5 May 2022 587th Alex-x90 🇺🇸 893 95 56ms 4 Dec 2022 587th Mandrzejy 🇵🇱 893 95 57ms 22 Mar 2024 590th m-tkach 🇺🇦 893 117 27ms 7 May 2022 590th Lydxn 🇨🇦 893 117 28ms 7 May 2022 592nd Steffan153 🇫🇮 892 52 7ms 31 Dec 2022 593rd KatieLG 🇬🇧 892 60 13ms 4 May 2022 593rd ScottHamper 892 60 10ms 5 May 2022 593rd Re-Adventures 🇮🇳 892 60 10ms 5 May 2022 593rd 0x24a537r9 892 60 10ms 29 Jul 2022 593rd stefangabos 🇷🇴 892 60 10ms 19 Aug 2022 593rd eranws 892 60 10ms 10 Sep 2022 593rd GeorgeStechman 🇬🇧 892 60 10ms 26 Sep 2022 593rd BloodStormKnight 892 60 10ms 15 Oct 2022 First Prev 526–600 of 3,461 Next Last