IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 short sword
(2, -14, D:1)
  a +0 club
(4, -13, D:1)
  a hobgoblin corpse
(5, -12, D:1)
  a bat corpse
(18, -19, D:1)
  a jackal corpse
(18, -18, D:1)
  a frilled lizard corpse