Say you are missing QJ in suit and have AKT9 and combined 8-9 cards in the suit. Also, assume no entry problems etc. Normally if opponents play Q or J after you play Ace it is a 2-1 favourite to finesse next time suit is played. Theory If GIB defender has QJ doubleton it will always play the Q. So, if Gib plays the Q restricted choice doesn't apply and you have normal odds for that suit. However, if Gib plays the J it is now a 100% play to finesse as GIB won't have QJ. Is this theory correct?