DS-SD 5     Bidding : 1♦ - 1♥ - (1♠) - DBL - (Pass) - 4♥
Opener ♠ A 2 ♥ K 8 6 ♦ K 9 6 3 ♣ K J 10 4		Responder ♠ 8 6 ♥ A Q 9 3 2 ♦ A Q 5 ♣ Q 6 3
After RHO's Overcall, Opener's Double shows 3-card heart support.
DS-SD 6     Bidding : 1♥ - 1♠ - (2♣) - DBL - (Pass) - 2♦ - 3NT
Opener ♠ Q 4 3 ♥ A K 10 9 8 ♦ 3 2 ♣ K J 10		Responder ♠ K J 10 5 ♥ 3 2 ♦ A K 10 ♣ 7 5 3 2
After Opener's Support Double, Responder, with only 4 spades bids a "false suit" shows his diamond stopper. Opener, with good stoppers in clubs, bids 3NT.
DS-SD 7       Bidding : 1♣ - 1♥ - (1♠) - 1NT - (Pass) - 3♥ - 4♥
Opener ♠ K 10 9 6 ♥ J 3 ♦ A K ♣ Q J 9 7 2		Responder ♠ 5 ♥ A Q 10 9 7 2 ♦ Q 10 9 ♣ K 5 4
Opener's rebid of 1NT after RHO's (1♠) Overcall denies 3-card heart support but promises a spade stopper. Responder, with 10+ HCP and a 6-card suit, jump rebids his hearts. Opener can now raise to 4♥ with 2-card trump support.
DS-SD 8     Bidding : 1♣ - 1♠ - (DBL) - RDBL - (2♥) - 2♠ - Pass
Opener ♠ A 8 3 ♥ J 9 8 ♦ K 10 6 ♣ A Q 7 5		Responder ♠ K J 7 5 2 ♥ 4 2 ♦ 8 5 ♣ K 9 8 4
Opener's Redouble shows 3-card support for Partner's spades. Responder with only a weak hand signs off in 2♠. © 2013 Michael Furstner