A: 4D
B: 5C
C: 4C
D: X
E: 3S
F: 5S
G: 2NT
H: What the ...?
I am still trying to understand the description.
I will take Blu's word for it that 2-1 points means 2 aces and one K but we still have the five in five 2-1 points to worry about. No, of course we do not all know what this means. It's a serious issue with relay systems, the explanations make sense only to those who have studied the system.
Anyway, I guess I am to assume that dummy will hit with a 5=1=3=4 shape, the diamond K, no other king, two aces, the club Q. It seems declarer must have two aces since otherwise he must have a void and somewhere along the line we should have been told that if they are playing it straight. Declarer can have at most six diamonds in his hand, so we count six diamond tricks in hand the spade A, the heart A and, perhaps, four club tricks. I doubt we can stop him from getting a heart ruff, so that would be 13 tricks. So we have to assume that either partner has the club J, holding declarer to three tricks in that suit, or that declarer has only five diamonds.
I really do not like this problem. In a typical online game I just relax when these relay systems arise but if I were playing something more seriously I would study their relay system beforehand and insist on some more detailed explanations. But time flies and I am leading the spade K. Nah, I am overthinking this. Some D.
H: D T