Amit, agreed, players have to be careful while applying Uniqueness, though it provides shortcuts in many puzzles.
Also, this is not the only logical way to solve the puzzle. But i feel this is the quickest.
If other players have applied some other techniques, request them to post it here.

Thanks Deb for this great explanation. I have applied the uniqueness funda to solve this puzzle during test, but this even odd funda for new to me. Thanks again for putting this method.