Leads against a game by Matthias Huberschwiller

A: ♠2 - Since your opponents have not used Stayman, you need to lead a major, your fourth-best Spade.

Your result so far:

A: ♥2 - You have a choice between both majors.

It's less dangerous to underlead a Queen than a King, therefore you need to choose Hearts.

Your result so far:

A: ♣K - You might want to lead your singleton, but look at your hand - 14 HCPs! Your partner will have something close to zero. He'll never get on lead to give you a ruff.

You'd better lead a Club to set up at least one trick.

Your result so far:

A: ♦7 - This time, holding a weak hand, you must lead your singleton. It's your best hope of making tricks.

Your partner will get on lead, and when he does he'll play a Diamond back, to give you (at least) one ruff.

Your result so far:

A: ♥8 - Underleading Ace-fourth is a really bad idea, which you should avoid if you can. You'd better lead your top of nothing Heart, and hope to set up tricks for your partner.

He'll know you have nothing in Hearts, and might play a Spade to your Ace if he needs to do so later.

Your result so far: