Unprofitable Sacrifices

Dealer: East
Vuln: N-S
Scoring: Pairs

  1. spadeA K Q 7 5
  2. heartJ 4
  3. diamond10 4
  4. clubJ 8 7 3
  1. spade10 9
  2. heart3 2
  3. diamondA Q 7 2
  4. clubK Q 9 4 2
club diamond heart spade NT
N - - 4 4 2
S - - 4 4 2
E 1 1 - - -
W 1 1 - - -
Green square in centre
  1. spadeJ 8 6
  2. heart10 8 6
  3. diamondJ 8 6 3
  4. clubA 6 5

Contract: 5club
Declarer: South
Lead: 7-

  1. spade4 3 2
  2. heartA K Q 9 7 5
  3. diamondK 9 5
  4. club10
Double dummy analyser: makeable contracts
The writer claimed that East-West had a profitable sacrifice in diamonds but not clubs. What do say to that? 5club doubled is four off: two spades losers, two hearts and one each in the minors, -700 in all

What about 5diamond? Imagine the defence cashes two spades and switch to the top three hearts. What does West do? To ruff low allows North to over-ruff with diamond10, who then switches back to spade winners. Whether this is ruffed in dummy or hand South throws club10, and however declarer plays he must lose another trick to diamond9. It's no better if declarer ruffs with diamondQ at trick five. North-South always come to two trump tricks. -700 (old scoring) .... again!
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