Scoring: IMP
1♦(1) - 2♦(2) - 2♠(3) - PA
4♠ - PA - 4NT - PA
5♥(4) - PA - 7♠(5) - All Pass
(1) Precision-style; could be short
(2) Natural, five or more diamonds
(3) Natural, forcing
(4) Two without the queen
(5) A bit of an overbid, but north could easily have four ♠ on this sequence
West leads the ♦8, taken in hand with ♦Q. The spades need to behave for the contract to have any hope, so I banged down the ♠A. Both opponents followed, East playing the queen.
Can you find the 100% line?
I misplayed this at the table, but the cards were fairly friendly and my line succeeded anyway. (BTW: I think this is easier than most problems appearing in this forum, but it seems on the tough side for a B/I problem).

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