Winners

Level 1 of the Dungeon
(0, 0, D:1)
  a rat corpse (skeletalised by now)
(23, -5, D:1)
  a rat corpse (skeletalised by now)
(40, -3, D:1)
  a frilled lizard corpse (skeletalised by now)
(40, 4, D:1)
  a hobgoblin corpse (skeletalised by now)

Level 2 of the Dungeon
(0, 0, D:2)
  a potion of curing
(28, -2, D:2)
  a dart slug corpse
  a bat corpse
  a ball python corpse

Level 3 of the Dungeon
(0, 0, D:3)
  a scroll of identify
(11, 18, D:3)
  8 stones
(15, 15, D:3)
  a +0 short sword
  2 stones
  a kobold corpse
(18, 20, D:3)
  a scroll of blinking