Quote
A two-level reverse or a non-jump three-level new-suit bid and raise to three-of-a-minor [at least four trumps, sound opening] shows extra strength (the "high reverse" at the three-level promising at least five-five), but a single raise to three hearts may be based on a minimum hand.
Opener's new-suit jump after a two-over-one response is a splinter raise but needn't deliver more than a sound opening bid with four-card trump support.
A two-notrump rebid by opener shows at least 15 HCP, a balanced hand, suitable stoppers.
Opener rebids his major with hands unsuitable for a different rebid.

Help
