Correct contract bridge / by E.V. Shepard ; including the official Laws of contract bridge adopted by the Whist Club, New York, and by all the leading clubs in America.

122 CORRECT CONTRACT BRIDGE
tricks, costing you 6oo points to save the second
game.
Next, suppose four cases where your adversary
is a game ahead and you are certain to win the
second game unless he overbids; how much can he
overbid, be doubled, and still make it pay? If he
does not oppose you, half of the rubbers will go to
each side, with a theoretically balanced score as a
result. In case he overbids to save letting you win
a certain second game, he will end by winning two
rubbers with net scores of 9oo points each, or i 8oo
points for the two. He will win a third rubber in
which you have won a single game, giving him a
net score of 6oo points, or 2400 points total for his
three rubbers won. You will win the fourth rubber
with a net total score of 6oo points, giving him a net
gain on the four rubbers of i 8oo points. As an overbid of two tricks, doubled when vulnerable, would
cost him 6oo points, the winner of the first game
of a rubber cannot afford to overbid his hand more
than a single trick to save a sure game.
Last, suppose that on four occasions you are on
the rubber game, and that your opponent is certain
to win each rubber unless you overbid. How much
dare you overbid? Those rubbers are each worth
6oo points if you refuse to overbid, or 2400 points
total. If you dare overbid you will win half of
the rubbers, giving a final score amounting only to
the total that you have overbid. You cannot gain
anything by a doubled overbid of 2 tricks, worth
6oo points, as you will be penalized 2400 points
total on the four rubbers and you will end by win