DavidKok, on 2022-January-10, 16:32, said:
My Leaping Michaels is also GF (although I use a slightly different structure - 4♣ shows M+om, and 4♦ shows M+M). I'd just also bid it on under strength hands (and announce it as such, of course).
I haven't taken a crack at the defensive problem because I'm having trouble making sense of the auction. West, a strong player, raised to 5♣ on 3-card support and an outside ace, but was not prepared to do so immediately. Partner has a preference for hearts over diamonds and spades, a penalty double of 5♣ but no penalty pass of 4♣. I'm tempted to guess that declarer has an over strength(/old-fashioned) preempt, partner has 5 heartw (I presume partner would have given preference to diamonds with 3=3=3=4) and some club values. This means declarer is likely 3=1=3=6, 2=1=4=6 or perhaps even 2=1=3=7 (with partner 2=5=3=3, 3=5=2=3 or 3=5=3=2 respectively). Just maybe declarer is 1=1=5=6 (partner 4=5=1=3).
This would mean the only risk of declarer making is if they can pitch spades on the diamonds (for example, declarer ♠xx, ♥x, ♦K9xx, ♣KJ8xxx), and by cashing some spades immediately we can set the contract. So I'm tempted to cash the ace of spades and watch for partner's signal: if odd, I'll continue a low one, if even I have to swap back to a heart (and hopefully partner unblocks with ♠Kx, costing an undertrick if partner's clubs are strong after I cash the queen of spades and give a ruff but clarifying the position). I don't see in what other scenarios this will cost - if partner is short in spades surely partner has diamond and club values for the double (after all, we did show a hand too weak to act immediately) and there is no risk of the contract making. If declarer has precisely ♠Kx and partner has a guaranteed diamond and club trick I'm losing the second undertrick, I guess. But is ♠xxx, ♥KQTxx, ♦Kx, ♣Kxx really a penalty double on this auction?
W is a well known player with a style that he will do what he thinks he can get away with. I think he thought he'd buy the contract in 4
♣ and he nearly did, but didn't fancy defending 4
♥. You did what I did. Partner's hand was Kx, KQxxx, Kxx, Jxx and the third spade trick goes west. This was the difference between 300 and 500, 3
♣ wasn't opened at the other table with xxx, x, Qxx, KQ10xxx so 4
♥ was bid and made for -650. I believe these hands are fairly accurate but I'm not 100% sure partner had
♥Q rather than declarer holding it stiff.