Trap exploit

This is not really a hack as much as an exploit.

One can expose a trap if one is observant.
1)Kill an enemy that drops an item but will not leave a corpse (I.e. Little spiders in the tunnels. This is to ensure that there would have been a blank tile after the enemy is defeated)
2)Insure the enemy is on a Trapped tile when killed
3)Once the enemy is killed, notice how the item drop does not land on the tile that enemy was standing on. This indicates a trap or hidden treasure on the tile.