Haskle is a variant of the ubiquitous word game Wordle. The objective of this game is to identify a Haskell prelude function based on its obscured type signature. Each element of the type signature is initially replaced with the emoji, which signifies that the player doesn't know what type it represents.
Typically, the game is played in rounds. Each round presents the player with a new obfuscated type signature and a limited number of opportunities to identify the correct function. The player can submit their guess by typing the name of the function that corresponds to the type signature, as they believe it to be. If the player's guess is incorrect, the game will indicate which portions of the guess were correct and which were incorrect.
Haskle is a fun method to test and enhance your understanding of the Haskell prelude and functions. It is also a good method to improve your problem-solving skills and challenge yourself. You can play multiple online variants of Haskle, as well as mobile apps and browser extensions.