Leads from a strong hand by Matthias Huberschwiller

A: ♠2 - Leading your singleton would be pointless since your partner wouldn't be able to get on lead to give you a ruff.

An active Club lead would be a shot in the dark. It's safer to lead a small trump and wait to see how it goes.

Your result so far:

A: ♥3 - Leading any of the side-suits would be too risky, since your partner has very few points and declarer has some extra strength.

Declarer already knows you have Heart shortness, so leading a singleton trump shouldn't work out too badly, especially seeing as they have at least nine trumps.

Your result so far:

A: ♦6 - Yes, you have the same hand, but this time the bidding sequence is quite different. South has a weak hand with long trumps and North might have some values.

Therefore leading a trump would only help declarer. You need to make an active lead. Even if they have a Diamond tenace, it will be in dummy and you won't have given away anything.

Leading an unsupported Ace is still too dangerous though.

Your result so far:

A: ♥6 - Your partner will have approximately zero points, but now's not the time to lead passively.

Against 3NT you need to set up your long suit. Start with a Heart and hope you have enough time to set them up.

Your result so far:

A: 3♦ - With such a strong hand, you need to lead your long Diamonds, planning a forcing defense. You hope to make declarer ruff with his long trumps, so you'll end up with more trumps than he has.

Your result so far: