Interference over 1

When the opponents overcall our 1-Opening with 1...1 we continue to relay with 9+ HCPs. With less than 9 HCPs we Pass with 0-4 and Double with 5-8 (range adjusted for suit quality, vulnerability, 3rd-seat 1 etc).

Opp.Bid Double 　 1 1 1 Pass Double(XX) Other 0-4 　 5-6 　 1: 7-8 HCPs 1+: 9+ Relays at based-level 0-4 5-8 1+: 9+ Relays at based-level 0-4 5-8 1+: 9+ Relays up 1-steps 0-4 5-8 1NT+: 9+ Relays up 2-steps 1NT Canape transfer 2-level Double is T/O with Lebensohl responses. Suit is natural (good 5+) and F1 Jumps are natural (good 6+) and GF 2NT is natural and GF; LTS applies Cue is GF 2-suiter 3-level Bids basically as above except all GF

Rule: Opener's 1 bid in competition is always a strong relay. For example:

• After 1-(P)-1-(X) : 1 = strong relay.

• After 1-(X)-1-(P) : 1 = strong relay.

• After 1-(X)-P-(1) : 1 = strong relay.

• After 1-(P)-1-(1) : X = strong relay.

Rule: After a positive response (9+ HCPs) to 1 a GF is established. Thus if the opponents break the relay:

• Pass: Equivalent to a take-out double

• Double: For penalties

• Other: Natural and forcing