IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 dagger
  5 stones
(1, -2, D:1)
  a rat corpse
(3, 12, D:1)
  7 stones
(9, 10, D:1)
  4 boomerangs
(11, 10, D:1)
  a +0 spear
(12, -2, D:1)
  a stone
(20, -7, D:1)
  a +0 ring mail
(23, 4, D:1)
  a +0 trident