Riddle

Level 1 of the Dungeon
[Shop] Koulual's Jewellery Shop
  a +6 ring of strength (760 gold)
  an amulet of reflection (390 gold)
  an amulet of magic regeneration (390 gold)
  an amulet of magic regeneration (390 gold)
  an amulet of the acrobat (390 gold)
  a +6 ring of intelligence (760 gold)
  a ring of protection from cold (325 gold)
  an amulet of the acrobat (390 gold)
  a +6 ring of intelligence (760 gold)
  a +6 ring of intelligence (760 gold)
  a ring of magical power (260 gold)
(0, 0, D:1)
  a +0 short sword
(0, 1, D:1)
  a +0 club (still there?)
  a hobgoblin corpse (still there?)
(11, -7, D:1)
  17 bolts
(16, 4, D:1)
  a bat corpse
(16, 7, D:1)
  2 stones
  a kobold corpse
(28, 1, D:1)
  a +0 dagger
(28, 20, D:1)
  a +0 leather armour
(34, -1, D:1)
  a rat skeleton
(35, -6, D:1)
  a quokka corpse (skeletalised by now)
(37, 16, D:1)
  a jackal corpse
(37, 17, D:1)
  a jackal corpse
(43, -13, D:1)
  10 arrows
(46, -22, D:1)
  a goblin corpse (skeletalised by now)

Level 2 of the Dungeon
(9, -6, D:2)
  a +0 dagger
(15, 0, D:2)
  a +0 short sword (still there?)
  a +0 hunting sling (still there?)
  3 stones (still there?)

Level 3 of the Dungeon
(0, 0, D:3)
  10 gold pieces
(2, 1, D:3)
  a potion of brilliance
(13, -6, D:3)
  a +0 hand axe
(14, -1, D:3)
  2 potions of curing
(15, 3, D:3)
  3 boomerangs
(15, 4, D:3)
  a scroll of blinking

Level 4 of the Dungeon
(9, 23, D:4)
  a +0 leather armour
(13, 18, D:4)
  19 bolts
(16, 3, D:4)
  a +0 club
(19, 12, D:4)
  a +0 falchion

Level 5 of the Dungeon
(0, 0, D:5)
  a wand of paralysis (15)