Goren Bridge: Further probability – The Hindu

South’s soar shift created a sport drive, so North’s three spade bid was stronger than a four-spade bid would have been. South used Key Card Blackwood and settled for a small slam when he realized that the queen of spades was lacking. How would you play this slam after a diamond lead?

Many would win the diamond ace, money the ace and king of spades, after which begin operating golf equipment, hoping to discard two diamonds from dummy. Assuming the anticipated 3-2 trump break up, this line would require the queen of spades to fall or the participant with the queen of spades to have a minimum of three golf equipment. Our buddies on the Superior College of Bridge Arithmetic inform us that this line affords a 55% probability of success. When Karlis Rubins, from Latvia, performed this deal, he discovered a small additional probability.

Rubins gained the diamond lead and cashed the ace of hearts. He crossed to dummy with the king of spades and cashed the king of hearts discarding a diamond from his hand. He then ruffed a coronary heart and the autumn of the queen was simply what he wanted. He cashed the ace of spades, crossed to dummy with the ace of golf equipment, and discarded his remaining diamond on the jack of hearts. He may then begin operating his golf equipment. The defender with the queen of spades may ruff in each time he favored, however Rubins had the 12 tips that he wanted. Properly performed!