Double Blocked Fork Strip
			♠	-
			♥	Q	9
			♦	J	9	5
			♣	-
♠	4					♠	-
♥	J					♥	K	10	7	3
♦	K	7	3			♦	Q
♣	-					♣	-
			♠	9
			♥	8
			♦	A	6	4
			♣	-
Contract is spades.  South to lead.  Win 3 tricks.
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