GRAND SLAM BIDDING - LEVIN EASTER MULTIGRADE
In the afternoon session there were a couple of opportunities to bid Grand Slams: board 9 and board 15. Not one pair managed to bid the 7 or 7 Grand Slam available on Board 9 and only 4 out of 21 bid managed to bid a Grand Slam on Board 15 (3 bid 7 and 1 bid 7NT).
Board 9 Dealer N EW vulnerable
AJT
Q83
AKQJ532
-
Q8. 976543
T96. J5
T876. 9
JT63. AK85
K2
AK742
4
Q9742
Board 15
AJ954
AQ7
K4
Latest Posts on this Thread
- SEAN LYNCH21 Apr 2019 at 10:47PM
A65
T87. 3
T9532. J85
QT. J87532
943. QT7
KQ62
K4
A96
KJ82
South Dealer NS vulnerable
How should board 9 be bid to get to 7?
How should board 15 be bid to get to 7NT?
- SEAN LYNCH22 Apr 2019 at 12:17AM
Board 9:
Imperspicuity bidding:
option 1:
N. E. S. W
1 - 1 -
1 - 2 -
2 - 3 -
3 - 4 -
4 - 5N. -
6 - 6 -
7 - - -
where:
1 - <= 6 losers (L) 0 - 37 HCP any shape
1 - <= 8 L 5+
1 - Shape asking relay (SAR)
2 - 54+
2 - SAR
3 - 55 10 total losers
3 - SAR
4 - 5521 5L
4 - CROSS
5N - AK
6 - CROSS continuation K ask
6 - 1 K
7 to play
1 - <= 6 losers (L) 0 - 37 HCP any shape
1 - <= 8 L 5+
1 - Shape asking relay (SAR)
2 - 54+
After learning South has AK and at least 1 North can count 13 tricks provided hearts break 3-2 and bids 7.
option 2:
N. E. S. W
1 - 1 -
1 - 2 -
2 - 3 -
3 - 4 -
4N. - 6 -
7 - - -
where:
1 - <= 6 L 0 - 37 HCP any shape
1 - <= 8 L 5+
1 - SAR
2 - 54+
2 - asking bid
3 - AQ or AK
3 - asking bid
4 - 2nd round control K or singleton
4N - CROSS
6- AK
7 to play
After finding South has 5 North starts asking bid sequence. After finding South has AK North can count 13 tricks if hearts break 3-2 and checks if South has A before bidding 7.
- SEAN LYNCH22 Apr 2019 at 01:16AM
Board 15:
Imperspicuity bidding:
N. E. S. W
1 -
1 - 1N. -
2 - 2 -
2 - 2N. -
3 - 3 -
3N. - 4 -
4 - 4 -
4N. - 5 -
5 - 5 -
6 - 6 -
6N. - 7N. -
- - -
where :
1 - <= 6 L 0 - 37 HCP any shape
1 - <= 8 L 5+
1N - SAR
2 - 5332 <= 7 L or 54+ <= 8 L
2 - SAR
2 - 5332 <= L 11 total losers
2N - SAR
3 - 5323
3 - Loser asking relay (LAR)
3N - 5 L
4 - CRO
4 - 0 or 3 A
4 - CRO continuation K ask
4N - 1 K
5 - CRO continuation Q ask
5 - 1 Q
5 - suit of K ask
6 - K
6 - suit of Q ask
6N - Q
7N to play
After North shows a 5332 5L hand South knows from the rule of 18 a possible Grand Slam is possible in or NT. After North shows 3 A, K and Q South knows that both 7 and 7NT depend on the finesse. To get the extra 10 pts in pairs if South decides to take risk to bid Grand Slam then they should bid 7NT to also eliminate any potential ruff in if suit broke 6-0.
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