In my previous post I posed this defensive problem.
Trick one goes spade queen ducked all round. Trick two is a spade to the king ducked again leaving us on play. Is there a clue or will we eventually succumb to the hindsight bias ?
At the table, in the PABF 2006, I realized the futility of continuing a spade. Between clubs and hearts, it appears to be a tossup at first glance, but the heart switch requires fewer specific cards in partner's hand. So I chose the H10.
Why I hate Peter Gill is because he spoilt my plans for this post by his insightful reply that can be found here.
"I must trust my partner - otherwise it is my error. "
Tony had played his lowest spade spot and his clubs were K109 (declarer had opened a 3334 11 count) so the club shift could have won us a game swing.
Now try this one
Over 1NT, partner's 2C would have been natural and double would have been takeout for the minors.