Your RHO opens a 12-14 notrump. Holding Kxx/Kxx/Kxxx/Kxx, I think you would pass. Assuming you're playing penalty doubles of weak notrumps, what are...
He realised that the main chance of developing the two extra game-going tricks in time was to play hearts for four tricks. If the hearts were 3-3 then any sensible play would have brought in a total of four tricks.
You are on lead against a no-trump contract. Do you automatically lead the fourth highest of your longest and strongest suit? How about Hand A after this bidding?