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 Tower of Hanoi 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 Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal

Bytes Chars

Hole	Golfer	Bytes	Time	Submitted
Collatz	KatieLG	2,253	104ms	9 days ago
Collatz	snoozingnewt	94	100ms	8 Oct 2025
Collatz	Yax42	79	100ms	5 Oct 2025
Collatz	albanian-laundromat	85	99ms	3 Oct 2025
Collatz	kmathis22	93	99ms	25 Sep 2025
Collatz	ffelixm	87	99ms	1 Jun 2025
Collatz	sean-niemann	72	96ms	7 Mar 2025
Collatz	CaedenHarper	3,247	98ms	24 Jan 2025
Collatz	Mabeloid	3,252	98ms	18 Sep 2024
Collatz	RedzGoose	96	99ms	9 Sep 2024
Collatz	dokutan	79	100ms	9 Aug 2024
Collatz	bac0id	82	101ms	29 Jun 2024
Collatz	HumanoidCPU	3,247	98ms	20 May 2024
Collatz	Yewzir	79	97ms	28 Mar 2024
Collatz	anoopsg	89	94ms	18 Nov 2023
Collatz	madeforlosers	104	97ms	26 Oct 2023
Collatz	raszpi	77	98ms	1 Sep 2023
Collatz	msbranicky	91	102ms	22 Aug 2023
Collatz	Alex-x90	83	99ms	2 Apr 2023
Collatz	StronkCheese	111	101ms	18 Feb 2023
Collatz	Betuaredead	80	100ms	5 Jan 2023
Collatz	retrohun	4,247	98ms	27 Dec 2022
Collatz	passsy	81	95ms	19 Nov 2022
Collatz	KrausRaus	79	101ms	10 Nov 2022
Collatz	ze-h	138	96ms	2 Nov 2022
Collatz	emplv	72	100ms	27 Oct 2022
Collatz	GrayJoKing	72	102ms	22 Oct 2022
Collatz	JayXon	🥇 70	96ms	17 Oct 2022
Collatz	Lydxn	🥇 70	95ms	17 Oct 2022
Collatz	MeWhenI	🥉 71	101ms	16 Oct 2022
Collatz	stefangimmillaro	🥉 71	99ms	16 Oct 2022
Collatz	m-tkach	72	97ms	16 Oct 2022
Collatz	Shanethegamer	🥉 71	100ms	15 Oct 2022
Collatz	Quijx	129	104ms	15 Oct 2022
Collatz	Steffan153	🥉 71	100ms	14 Oct 2022
Collatz	KatieLG-Transpiler	3,268	99ms	13 Oct 2022