BMB-LOGO-HEADER-250
bmb-club-white-30

Week 0152 : 22nd May 2023

Search
Help

MODIFIED GRAND SLAM FORCE

After the trump suit has been agreed, a bid of 5NT, bypassing 4NT, enquires about the top three trump honours. There are various modifications of the convention, but the most common are EITHER:

6♣ shows none of the top three honours in the agreed suit 6 of the agreed suit shows one of the top three honours in that suit.

OR:

6♣ shows one of the top three honours in the agreed suit 6 of the agreed suit shows none of the top three honours in that suit.

With two of the top three honours, in both cases responder bids the Grand Slam.

Back to Glossary