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Criss-Cross Gerber

Criss-Cross Gerber For Minor Suits If you have agreed on a minor suit as the trump suit, consider using CC Gerber instead of a Blackwood call.  If your suit is diamonds, a bid of 4 is the criss-cross suit, and if your suit is clubs then 4 is the criss-cross suit.  Both bids use Keycard Gerber where the king of trump is treated as an ace. Word of advice:  4NT Blackwood does not work for minor suits, especially for the club suit, so agree to never use it!   If your suit is clubs, then any response to 4NT except 5, immediately commits you to slam.  That can't be good. Any form of Blackwood that asks with a 4NT bid, including Roman Keycard, works very well if your suit is spades, but it does not work at all for clubs, and poorly for the red suits. Roy Wilson