IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 dagger
(10, 8, D:1)
  a bat corpse
(21, -15, D:1)
  8 stones
(21, -9, D:1)
  a +0 chain mail
(21, -8, D:1)
  a +0 sling
(24, 3, D:1)
  a +0 dagger
(25, 4, D:1)
  a ball python corpse
(30, -9, D:1)
  5 stones