"When I redoubled, Ike looked as if he was going to swoon," says General Clark, "but he made seven diamonds, doubled and redoubled." Precautionary measures typical of expert play were required to make the grand slam. West opened the king of clubs. South (Eisenhower) trumped it. Then he took the ace and king of spades and led back the three of spades. If West trumped, dummy could overtrump, so West discarded and dummy won the trick with its low diamond. Then the ace of trumps was taken, the South hand was entered by trumping a heart, trumps were drawn with the king and queen, and the South hand was good for the remaining tricks. If Eisenhower had led even one round of trumps before leading the spades, he would have lost his grand slam.
General Clark's basic reasoning was good: If Eisenhower could make six diamonds without the ace of trumps, he should be able to make seven diamonds with the ace of trumps. However, it would have been safer and just as profitable in most cases for Clark to redouble the six-diamond contract. Both Gruenther's and Moses' hands looked good enough to defeat the slam contracts, which explains their doubles.
The score was 1,610 points plus the value of the game (which was about 350 more).