Poor Mathematics

Pages: Page 4 of 5

Dealer: South
Vuln: Game All
Scoring: IMPs
  1. spadeJ 7 4
  2. heartA 10 9 3
  3. diamond10 6
  4. club9 8 5 4
  1. spade10 9 8
  2. heart8 5 4
  3. diamond8 2
  4. clubA K J 7 2
club diamond heart spade NT
N 2 - 4 4 3
S 2 - 4 4 3
E - 1 - - -
W - 1 - - -
Green square in centre
  1. spade6 5
  2. heartK 7 2
  3. diamondK J 7 5 4 3
  4. club6 3

Contract: 4spade
Declarer: South
Lead: clubA
  1. spadeA K Q 3 2
  2. heartQ J 6
  3. diamondA Q 9
  4. clubQ 10
Double dummy analyser: makeable contracts
West North East South
2NT*
Pass 3club~ Pass 3spade
Pass 4spade End

* 20-22
~ five card Stayman

By cashing diamondA and crossing to heartA, only to see East show out, you have lost nothing - West's diamond is now known to be a singleton and another diamond trick is assured. If East has ducked twice from heartKxxx for some strange reason then we need to guess well. West will not throw a club on the third heart and allow himself to be end-played with dummy's last club, so he'll throw a diamond - we need to guess if his last one is the king! If the hearts are 3-3 - bingo - East's king drops under the ace!!

There is an alternative line, of course, equally successful in this instabce ..
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