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IAC & Master Solvers Club / Re: 2020 March - MASTER SOLVERS CLUB
« on: January 28, 2020, 03:57:54 PM »
Thanks guys for the welcome.
The UCB (as I was taught it) always shows support for overcaller's suit: 3+ card support and 9+ HCP. So in an auction like 1 - 1 - p - 2 , the 2 says nothing about C but promises D support and 9+ HCP. The same would be true for the 1 - 1 - 1 - 2 auction, as 2 is the only cue bid available which allows overcaller to sign-off one level up from his overcall. 2 would also be a UCB but forces a minimum overcaller to sign-off at the 3-level. (Btw, the advancer with 9+ HCP and at most 2-card support would bid NT or his own suit.)
An auction can give advancer two choices for a UCB. This is rare, but happened in Problem F from last month's Bidding quiz where the overcaller used a x to show "strong hand with length in D". This was the auction: 1 - p - 1 - p - 1 - x - p to us. We had this hand:
A J 8 3 5 3 Q 6 3 A 9 3 2
This is a hand I'd want to use a UCB for - 3+ card support and 9+ HCP. The question which I struggled with was which one, 2 or 2 ? Usually a UCB says nothing about the suit bid, as there is only one choice. Here there was a choice and I think the correct bid must depend on partnership agreement: either the UCB shows the usual stuff and stops in the suit bid (2 ) or the UCB shows the usual stuff and asks for stops in the suit bid (2 ). I chose incorrectly.
Returning to Hand A for this month a UCB of 3 to me says nothing about clubs, just good D support and 9+ HCP.
I remember my teacher saying that the UCB was so-called because it did not assume overcaller had a good hand, merely a good suit.
The UCB (as I was taught it) always shows support for overcaller's suit: 3+ card support and 9+ HCP. So in an auction like 1 - 1 - p - 2 , the 2 says nothing about C but promises D support and 9+ HCP. The same would be true for the 1 - 1 - 1 - 2 auction, as 2 is the only cue bid available which allows overcaller to sign-off one level up from his overcall. 2 would also be a UCB but forces a minimum overcaller to sign-off at the 3-level. (Btw, the advancer with 9+ HCP and at most 2-card support would bid NT or his own suit.)
An auction can give advancer two choices for a UCB. This is rare, but happened in Problem F from last month's Bidding quiz where the overcaller used a x to show "strong hand with length in D". This was the auction: 1 - p - 1 - p - 1 - x - p to us. We had this hand:
A J 8 3 5 3 Q 6 3 A 9 3 2
This is a hand I'd want to use a UCB for - 3+ card support and 9+ HCP. The question which I struggled with was which one, 2 or 2 ? Usually a UCB says nothing about the suit bid, as there is only one choice. Here there was a choice and I think the correct bid must depend on partnership agreement: either the UCB shows the usual stuff and stops in the suit bid (2 ) or the UCB shows the usual stuff and asks for stops in the suit bid (2 ). I chose incorrectly.
Returning to Hand A for this month a UCB of 3 to me says nothing about clubs, just good D support and 9+ HCP.
I remember my teacher saying that the UCB was so-called because it did not assume overcaller had a good hand, merely a good suit.