Edmunte1, on Jul 10 2007, 05:30 AM, said:
2.1) East plays the Ace and then play a high heart. [b]I ruff high[b], play diamond to A♦, [b]ruff high another heart[b], diamond to K♦, and play the last heart discarding a club, now East should play ruff and discard and concede the game (i'll make first ruff in dummy, then i have ♦ and ♣ in dummy to ruff in hand the suit that East keeps)
I think you lose your bet.
in 2.1)
You have lost the spade A. You are ruffing 2 hearts high (or so you stated), You are losing a heart as you pitch a club. At this point you are down to Kx in spades, having lost 2 tricks already. East now continues another heart. West can ruff (or overruff you if you choose to ruff at all) and then lead either minor suit on which East uppercuts you with the 10 of trumps to promote Wests last trump. So this line fails as it is stated.
It does appear to work as suggested by jtfanclub, however. Maybe that is what you meant to say....but you missed the part about cashing the spade K earlier. As he also implied, you are making an assumption that East will continue a heart at the point he is in with the spade Ace, and he may not......
(Note, this is the only case that matters, as you *had* to play a trump from dummy....what happens when East plays the spade 10 is not relevant as it is a double dummy problem, Case 2.2 is meaningless.)
I'm not claiming that there is not a 100% line for declarer to succeed or the defense will always prevail. Only that your stated lines are flawed.
Hope you didn't bet the farm on this one.

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ing) tr. v. - Any bid made by bridge player with which partner disagrees.