My initial thoughts.
Problem A 4
I expect partner to be at least 5-5 in the minors with a heart stop/partial stop. If we have a slam, it is likely to be in one of the minors. The move past 3NT should be slammish, so the question is which minor. I've already shown a preference for diamonds, 4
should suggest that I do not have a clear choice.
Problem B Pass My choices are from the aggressive 1NT, to a poorly shaped double, or pass. If I bid, I like 1NT best - it shows my stopper, I have cards that are working together along with great spots, and I have three tens. Nonetheless, I tend to pass these hands and hope I can back in later.
Problem C 1 NT I don't particularly like how this auction is proceeding. The hand is wrong for a Moysian in spades (partner, if holding four, will take the tap), I only have two clubs with partner, and partner opened clubs, so the likelihood of a 4-4 or better fit in diamonds is low. I also don't like the prospect of converting a double at the one-level. I will try 1NT and hope partner does not raise to game without a little something in the suit (besides, RHO could have stuck in a four-card overcall with very nice honors).
Problem D 2
I have four-card support and 10 HCPs, but I also have 3-4-3-3 shape. I will go low to start based on shape and vulnerability, but will accept game tries.
Problem E Pass An unsavory choice between showing my four-card heart suit or my stopper. My stopper is well-placed for a diamond lead, but not if RHO has an entry to lead through my holding. The 3-4-3-3 shape says defense, the shape, the jacks and the placement of the
K all suggest downgrades for the hand, so I go for the third option and go quietly for now. I don't know if we have a plus position on this hand, but I do fear the 200 that might go against me if I chime in now.
Problem F 2 NT I will take the hint. With partner opening diamonds, I have hopes that the
K is pulling its full weight, and the clubs are a source of tricks. I do want to check more closely the type of game tries that are available before making a final decision.
Problem G 6
Is there a sensible way to explore a grand? I am afraid of any bid below slam, as being something that partner can pass. Jam and pray seems the best avenue.
Problem H
6 Quoting Todd: "Have I said how much I hate lead problems?"