Leads with a Strong Hand by Matthias Huberschwiller

A: 6♠ - The only way of beating this contract without too much help from your partner is to set up Spade tricks. Therefore you must lead your 4th-best Spade.

Your result so far:

A: 2♣ - What will declarer do?

He's going to ruff his Spade losers in dummy. You can prevent him from doing that by leading a small trump, and when you get back on lead, playing the Ace of Clubs and a third round of trumps.

Your result so far:

A: 9♠ - North's bid was pre-emptive, and South must have a pretty strong hand. If you lead a side-suit you'll be playing right into his tenaces.

A Spade lead is safer, since you have already shown that you're short in Spades by doubling. If declarer has a finesse to take, he'll get it right anyway.

Your result so far:

A: 8♠ - This hand looks a lot like the previous one, except the bidding was quite different. This time, South has a weak hand. You need to lead aggressively, to set up tricks before South could try and discard them.

A trump lead would be very dangerous. You could be crushing partner's honor, and there might be a Heart void in dummy!

Your result so far:

A: Q♣ - The singleton in Diamonds looks tempting, but let's think it through. Your partner won't have many points to give you ruffs, and you have a natural trump trick.

It's better to lead a Club, to try and set up tricks.

Your result so far: