Table of Contents
Lawrence Diamond
1 11-15, 2+
1/ 11-15, in principle 5+ cards. Exception: KQJx xx xx AQxxx
2/ Weak two
4NT Good 5 of a minor opening (ex Ax x x KQJ10xxxxx = 9 tricks)
Higher bids same as if no double
Typically 5-4-2-2 or with stiff honor
Responder’s jump = splinter
Artificial, demands relay to 2, and then …
Unspecified strong (20+) 3-suiter … 2N by responder asks for strength and singleton. After the 2N ask …
Tend to bid 1NT with all balanced hands
Balanced 9+, no stopper or awkward
Doubles – General Rules
Jumps to 3-level by PH are fit-showing in or out of comp
1M-(preempt)-4M … responder is in control of auction
Try to avoid opening 1NT with a 5-card major
Interference over 10-13 NT
1N (P) P (X) P (P) … now DONT style for responder’s bids and XX
If they double after 2-2, XX ix business, otherwise system on
XX shows good hand, sort of feature ask not forcing pass
We play above asking bids over 4M opening – can’t play in new suit
On after our weak two bids are doubled (or 2 with 2 overcall)
