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Preemptive Jump Overcall in Culbertson-Lenz Match
The article discusses Oswald Jacoby's early 1931 invention of the preemptive jump overcall used in the Culbertson Lenz match. It explains the bid aims to reduce bidding space, risks double and misbidding, and details a hand where South should bid four spades to threaten a slam while encouraging partner to choose a suit.
MENTIONED IN THIS ARTICLE
Fred Karpin
Oswald Jacoby
Jacoby
Mrs. Culbertson
Ely Culbertson
Ely
Lenz
Ted Culbertson