IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 short sword
  5 stones
(2, -3, D:1)
  a +0 mace
(7, 16, D:1)
  a +0 dagger
(8, -10, D:1)
  2 stones
(9, 15, D:1)
  a +0 dagger
  a +0 robe
  a goblin skeleton
(12, -6, D:1)
  a +0 dagger
  a goblin skeleton
(20, -7, D:1)
  a +0 club
(28, 9, D:1)
  a +0 sling {Balvinder}
(30, 7, D:1)
  a +0 dagger
  5 stones
  a kobold skeleton
(33, 7, D:1)
  a rat skeleton
(35, 21, D:1)
  7 stones
(41, 19, D:1)
  4 boomerangs
(43, 19, D:1)
  a +0 spear
(44, 7, D:1)
  a stone
(52, 2, D:1)
  a +0 ring mail
(55, 13, D:1)
  a +0 trident