Bidding
Open 1S, partner bids 2H, your rebid is 3C. Partner rebids 4D and you bid 4NT
Blackwood Ace asking. Partner replies 5S (=3 Aces), you
King Ask by bidding 5NT partner responds 6D= 1 King you have all the suits controlled to 2 levels raise the bidding to 7D. All Pass.
Acol Bidding
Open 1S, partner bids 2H, your rebid is 3C. Partner rebids 4D and you bid 4NT
Blackwood Ace asking. Partner replies 5S (=3 Aces), you
King Ask by bidding 5NT partner responds 6D= 1 King you have all the suits controlled to 2 levels raise the bidding to 7D. All Pass.
Dummy goes down, count your losing tricks. Spades:0, Hearts:1, Diamonds:0, Clubs:0. If you can avoid playing hearts and make sure you end up in souths hands after drawing trumps this grand slam is in the bag.
Win the lead with AS, draw KD, QD and the a low diamond into your hand. Run your spades discarding low hearts on the table. Play a low club to AC, AH and then overtake the 10C in your hand. The rest of the tricks are yours.
This contract makes 7(13 tricks) in every suit apart from hearts where it only makes 5(11 tricks).
