Problem A

Matchpoints
Both sides vulnerable
You, South, hold:

What is your plan?

(a) 1 ♦, then, after (Pass) — 1 ♠ — (Pass) — ?
(a1) 1 NT (a2) 2 ♣ (a3) 2 ♥ (a4) 2 NT;
(b) 1 ♥, then, after (Pass) — 1 ♠ — (Pass) — ?
(b1) 1 NT (b2) 2 ♦ (b3) 2 NT
(c) 1 NT.

Problem B

Rubber bridge
Neither side vulnerable
You, South, hold:

What call do you make?

Problem C

Imps
Neither side vulnerable
You, South, hold:

^*BWS: lebensohl applies; 3 NT = strong suggestion;
3 ♠ asks hearts, denies spade stopper

What call do you make?

Problem D

Matchpoints
East-West vulnerable
You, South, hold:

What call do you make?

Problem E

Imps
North-South vulnerable
You, South, hold:

What call do you make?

Problem F

Matchpoints
North-South vulnerable
You, South, hold:

What call do you make?

Problem G

Imps
North-South vulnerable
You, South, hold:

What call do you make?

Problem H

Matchpoints
Both sides vulnerable
You, South, hold:

What is your opening lead?