Non-teleport level


 * "A mysterious force prevents you from teleporting!"

Introduction
A non-teleport level is any level that prevents all forms of teleportation, whether from the scroll of teleport, teleportitis, or any other such method. When you play such a level, you will not be able to escape the monsters by teleporting, but neither will the monsters. Thus you might need to change from your usual strategy.

Even in 3.4.3, monsters are not smart enough about this. Monsters can waste a scroll of teleportation, or more than one, trying to escape you. Nymphs and nurses will still try to teleport away from you, but it will always fail. None of these monsters will ever learn.

Monsters who know how will still be able to warp to the up-staircase. This happens a lot with master liches, Quest bosses, and demons. (Quest boss levels and demon lairs are non-teleport, as are many levels where master liches tend to appear.) If you have telepathy, you can easily see where such monsters are warping. However, even if you have teleport control, you will not be able to follow them by teleporting. You will have to walk to the up staircase and endure injury while the monster warps and heals. Once you can reach the up staircase, stand on it to block it.

List of Non-Teleport Levels
You know that you have reached a non-teleport level when a "mysterious force" prevents you or a monster from teleporting. It is especially easy to detect if you have teleportitis.


 * All of Sokoban
 * Quest home level, boss fort level, and boss level (not intermediate dungeon filler)
 * Level of Medusa
 * The Castle
 * Valley of the Dead
 * Demon lairs (Asmodeus, Juiblex, ...)