Friday, December 30, 2005 7:38 PM
D.S.I.P. - Responsive
The Bridge World Standard treatment of doubling opponents raised suits after partner overcalls is responsive showing the two unbid suits. I think this is a poor treatment. BWS also plays a new suit bid by the partner of the overcaller as non forcing . This is also a very bad treatment as it eliminates the Q bid as limit raise or better. You need to use a Q bid just to create a force which muddles these auctions badly. BWS stands by these “negative free bids” so they can compete better. I would prefer a new suit to an overcall remain as a one round force . With two unbid suits just bid them or make an unusual NT bid to show a two suiter.
Borrowing a concept from snapdragon doubles , the best solution is to play a D.S.I.P. double as showing specifically the higher ranking of the two unbid suits and tolerance for partners overcall.
Axxxxx x K10x Q10x 1♥-2♦-3♥-X You have made two bids in one . I have spades and diamond support. If you had AKxxxx xxx x Q10x you would bid 3♠ which denies support for the overcalled suit.
You can use this bid as a “showing where you live” game try when partner has overcalled a major. KJ10xxx Kxx Kxx x 1♣-1♥-2♣-X this D.S.I.P. double shows spades and heart support. A fit showing double if you will.
Now the negative free bid just to compete. Jx KQxxxx xxx xx 1♠-2♦-2♠-X You are too weak to compete to 3♥ directly so the double does it for you. You do not need a “negative free bid”.
The stronger hand comes into play where you have a choice of a forcing bid or a D.S.I.P. double. Ax AQJxx 109xx Jx 1♠-2♣-2♠-X You bid 3♥ directly and partner bids 4♣ and you are out of your 3NT game which makes. Doubling first and bidding 3NT after the 3♣ bid gets you two bids in one. You show a good hand with hearts but you do not “end play” the overcaller. Partner holds xxx x Axxx AKQ10xx and 3NT is your spot.
The “classic” snapdragon double is when there is only one unbid suit. You double to show that suit and tolerance for partners overcall. 1♠-2♣-2♦-X shows hearts and club tolerance.