1. Double. With some 15-point or better hands, you might not have a convenient way to enter the auction, but you have no such problem here. The double tells partner that you have a hand of at least opening strength and support for both unbid suits — which is exactly what you have. Partner will choose whichever major suit he prefers and relieve you of any guesswork as to which suit to bid.
2. Pass. Again you have 15 points, butthis time you can’t double because you don’t have sufficient support for the unbid suits. Furthermore, West’s club bid has taken a lot of starch out of your hand, since your club honors are badly placed. It is therefore too dangerous to do anything but pass.
3. Pass. There is some temptation to bid one spade, but with such a weak suit you might get your head chopped off by a double. Overcalls are normally based more on tricks than points, and you don’t have many tricks here.
4. One notrump. The only question here is whether to double or bid one notrump. A one-notrump overcalls shows 15 to 18 points, balanced distribution and stoppers in the opponents’ suits — precisely what you have. A double would suggest distributional values, which you lack. Game is unlikely, but the partscore is worth fighting for.
5. One spade. Here the plan is to bid both suits in normal fashion (higher-ranking suit first). It is true that a double might locate the proper trump suit more quickly, but there is also a danger that the bidding will climb too high and too fast in one of the minors, and you could find yourself bucking a high-level contract before bidding either of your suits.
With two long suits and a good hand, you usually do best by bidding one of them instead of doubling for takeout, with the intention of bidding your second suit at your next turn.
For details about local bridge events, go to the HK Contract Bridge Association website www.hkcba.org