What's the Jacoby rule?

Question

Can somebody explain to me in plain English what the Jacoby rule is in Backgammon?

Answer 1

Jacoby Rule
[Named for Oswald Jacoby, who proposed the rule.] A rule popular in money play which says that gammons and backgammons (2) count only as a single game if neither player has offered a double during the game. The rule speeds up play by eliminating situations where a player avoids doubling so he can play on for a gammon. See post by Daniel Murphy.

Answer 2

http://www.fw-ed.drix.co.il/backgammon/backgammon-rules.html

http://www.backgammon.org.il/backgammon-jacoby-rule.php

http://www.bkgm.com/gloss/lookup.cgi?jacoby+rule