Riddle

Level 1 of the Dungeon
(0, 0, D:1)
  20 stones
(5, -1, D:1)
  a +0 club (still there?)
  a goblin corpse (still there?)
(6, -4, D:1)
  a +0 club
(9, -9, D:1)
  a bat corpse
(9, -2, D:1)
  a +0 ring mail