Partner lead ♠4 (4th best). Dummy plays low and I win with ♠A. Declarer follows with ♠Q.
Obviously, we have to rely on ♥ for the setting trick. How should I continue?
If I play a low ♥, declarer may win with doubleton Qx. If I lead top ♥ (does A or K make any difference?), declarer may guess right with Qxx and besides, how should partner signal with Qxx, Jxx, Jxxx and Qxxx?