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DOPIDEPO.SBA
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1995-09-09
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DOPI AND DEPO
When an opponent interferes with Blackwood or Gerber by sticking
in a suit bid after the ace-asking call, use the following
procedures:
-- When the overcall is against Gerber, use DOPI: Responder
doubles with zero or three aces, passes with one or four (Double 0,
Pass 1--DOPI). With two aces responder bids the next ranking suit
holding 0-2 kings, the one higher than that with two aces and 3-4
kings. This is all in accordance with Gerber responses, as shown
in chapter GERBER.
-- When the overcall is below five of the agreed suit against Roman
Key Card Blackwood (RKCB), use DOPI to show key cards, including
the king of trumps.
-- When the overcall is five of the agreed suit or higher against
RKCB, double with an even number of aces, pass with an odd number
(Double Even, Pass Odd--DEPO) of key cards, including the king of
trumps.
-- When the overcall is at the five level against regular Black-
wood, use DOPI at the five level (there is no agreed suit); at the
six level or higher use DEPO. The reasoning is that a higher level
overcall makes DOPI rather risky.