Some monsters can hide under items on the ground. Moving next to a monster so hidden grants them an opportunity to attack you unnoticed, and attempting to move onto the tile where they are produces "Wait! There's a foo hiding under <an item>!", wasting your movement time.

If you know exactly where the hiding monster is and are already adjacent, you can simply use the [F] command to fight it. Otherwise, the monster will get a turn before you do giving it a chance to hit you. It is possible to hit hidden monsters with ranged weapons, making it fairly easy to detect them for wary players.

Player hidingEdit

If you are polyselfed into a monster capable of hiding, you can use the #monster command to hide under objects.

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