Other doubles

Cooperative DBL

Who: Anyone

When: After a high level preempt by opponents

Meaning: Tends to be with a balanced hand and enough values depending on the level. Partner bids according to the LAW.

Level: Unlimited

• 1H-1S-2H-4S-DBL
• 1S-2H-2S-3H-4S-DBL

SOS RDBL of 3NT

This happens in the following situations:

• Preempt - 3NT - DBL - RDBL: shows weaker than expected hand
• Preempt - 3NT - DBL - Pass - Pass - RDBL: shows doubt about the stopper
• Opponents bid a suit and later DBL our 3NT
  • RDBL by player who promised stopper: doubt about the stopper
  • RDBL by the other player: suggests that the alternative contract may be better

Lead-directing DBL

• Opponents bid 3NT without showing suits. The DBL shows a running suit that partner needs to guess. He defaults to spades if cannot guess.
• 1NT-Pass-3NT-DBL
• 1NT-Pass-2NT-Pass-3NT-DBL
• Opponents bid 3NT and dummy has shown at least 1 suit. The DBL demands the lead in dummy’s first suit.
• 1C-Pass-1S-Pass-1NT-Pass-3NT-DBL: Spades
• 1D-Pass-1H-Pass-1S-Pass-2C-Pass-3NT-Pass-Pass-DBL: Diamond
• You open 1X and opponents bid 3NT. Partner’s DBL demands the lead in dummy’s first suit.
• You open 1X and opponents bid 3NT. Your DBL demands the lead in:
• 1S-1NT-Pass-3NT-DBL: Another suit – a lower ranked suit that you could not bid
• 1C-1S-Pass-2H-Pass-2NT-Pass-3NT-DBL: Your suit – as your opening did not promise a length in it
• You over-call and opponents bid 3NT. Partner’s DBL demands the lead in:
• 1H-1S-2C-Pass-2NT-Pass-3NT-DBL: Clubs (dummy’s suit) as partner did not bid 2S over 2C
• 1D-1H-3D-Pass-3NT-Pass-Pass-DBL: Hearts (your suit) as partner had no opportunity to show heart support at level 2
• You over-call and opponents bid 3NT. Your DBL demands the lead in another suit – usually lower ranked than the suit of your over-call.
• You and your partner each bid a suit and opponents bid 3NT. Your DBL demands the lead in:
• 1C-1D-1H-1S-1NT-Pass-3NT-DBL: Hearts. If you wanted spades (your suit) – you would pass; if you wanted diamonds (partner’s suit) – you would have bid Snapdragon DBL.
• 1D-1H-1S-2C-2NT-Pass-3NT-DBL: Spades - same as above
• 1C-1S-Pass-2H-2NT-Pass-3NT-DBL: Spades. If you wanted hearts, you would have passed.
• Opponents bid a suit slam undisturbed. The DBL (Lightner) demands an unusual lead (not trumps, not the un-bid suit and not a suit bid by the defenders).
• Opponents bid a suit slam undisturbed. You DBL (Latinov) and lead a K or Q of a side suit. This shows a singleton and demands that partner overtakes your lead and gives you a ruff.
• Opponents bid 6NT. The DBL demands ALWAYS the lead in dummy’s first suit.