Syntax guessing, also known as guess-the-verb, guess-the-noun and the syntax quest, is a problem sometimes encountered in text-based video games, such as interactive fiction games and MUDs. For various reasons - including a limited vocabulary, or a simple VERB-NOUN parser - the command syntax necessary to carry out an action may be obscure, such as with a button where the player must type POKE BUTTON, while PUSH BUTTON does not work (a "guess-the-verb" problem), an item described as a pillow that can only be obtained by typing GET CUSHION rather than GET PILLOW (a "guess-the-noun" problem), or a situation where the command TURN THE DIAL works but TURN DIAL does not (a generalized syntax guessing problem). If syntax guessing is necessary at a critical step, the game may appear unwinnable, w