Precision 2

A Precision 2 opening bid shows 11-15 HCP and one of the following hand patterns:

• 4-4-1-4 (4 spades, 4 hearts, 1 diamond and 4 clubs)
• 4-4-0-5 (4 spades, 4 hearts, 0 diamonds and 5 clubs)
• 4-3-1-5 (only if the club suit is too weak for a Precision 2C opening)
• 3-4-1-5 (only if the club suit is too weak for a Precision 2C opening)

Pass	At least 6 diamonds, no interest in the other suits or in bidding higher
2	Natural, signoff
2	Natural, signoff
2NT	Artificial and game-forcing, showing 11+ HCP and asking opener to further describe his hand (see below)
3	Natural, signoff
3	At least 6 diamonds, invitation to 3NT
3	Preemptive
3	Preemptive

After an artificial 2NT query by responder, opener's rebids are:

3	3-4-1-5 shape
3	4-3-1-5 shape
3	4-4-1-4 shape, 11-13 HCP
3	4-4-1-4 shape, 14-15 HCP
3NT	4-4-1-4 shape, 14-15 HCP, and the king or ace of diamonds
4	4-4-0-5 shape, 11-13 HCP
4	4-4-0-5 shape, 14-15 HCP

Responder's rebids are natural.