Diffle is a variation on Wordle in which players attempt to predict a word of varying lengths. Each guess must be a valid word, and you can use as many letters as you want. After each guess, you will see a hint that tells you the order of the letters you used in the word. For example, if the word is "hello" and you guess "hole", the hint will be "2 4". This means that the second and fourth letters of your guess are in the correct position in the word. You can use the hints to narrow down your guesses and find the word.