(1)
Fourth suit forcing
This
deal
is from an online EBU duplicate.
After
North showed clubs and spades, South set up a game
force by bidding the fourth suit. When North
rebid clubs and later showed the diamond king South
was fairly certain that North had six clubs. A
series of control bids was followed by Roman Key
Card Blackwood. With all the controls held
South asked for kings. When North denied the
spade king South could only count 12 tricks so
settled for six notrump.
West
led a diamond, won in dummy. Now two top
hearts followed by four rounds of clubs and the end
position below was reached. East and West can
afford to throw a spade on the fifth club, but
when the last club is played East cannot afford a
spade (or South can take the spade finesse) or a
diamond, so must throw a heart. South throws
his low diamond and then two rounds of diamonds
squeeze West between spades and hearts for the
overtrick.
This
is a non-simultaneous double guard squeeze (I
think).
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