ahydra, on 2012-October-28, 08:44, said:
One interesting point is how partner can show the huge 0454 rather than just a 21-count 1444.
Try this. It assumes Responder will always relay with a GF hand.
2
♣ - 2
♦; 2
♠ - 2NT
==
3
♣ = diamond shortage
... - 3
♦ = asks
... - ... - 3
♥ = min
... - ... - ... - 3
♠ = asks
... - ... - ... - ... - 3NT = 4414, lower range
... - ... - ... - ... - 4
♣ = 4405, lower range
... - ... - ... - ... - 4
♦ = 4414, higher range
... - ... - ... - ... - 4
♥+ = 4405, higher range (+ controls)
... - ... - 3
♠ = 4414, extras
... - ... - 3NT = 4405, extras
... - ... - 4
♣ = 4414, more extras
... - ... - 4
♦+ = 4405, more extras (+ controls)
3
♦ = heart shortage
... - 3
♥ = asks
... - ... - 3
♠ = min
... - ... - ... - 4
♣ = asks
... - ... - ... - ... - 4
♦ = 4144, lower range
... - ... - ... - ... - 4
♥ = 40(45), lower range
... - ... - ... - ... - 4
♠ = 4144, higher range
... - ... - ... - ... - 4NT+ = 40(45), higher range (+ controls)
... - ... - 3NT = 4144, extras
... - ... - 4
♣ = 40(45), extras
... - ... - 4
♦ = 4144, more extras
... - ... - 4
♥+ = 40(54), more extras (+ controls)
3
♥ = spade shortage
... - 3
♠ = asks
... - ... - 3NT = min
... - ... - ... - 4
♣ = asks
... - ... - ... - ... - 4
♦ = 1444, lower range
... - ... - ... - ... - 4
♥ = 04(45), lower range
... - ... - ... - ... - 4
♠ = 1444, higher range
... - ... - ... - ... - 4NT+ = 04(45), higher range (+ controls)
... - ... - 4
♣ = 1444, extras
... - ... - 4
♦ = 04(45), extras
... - ... - 4
♥ = 1444, more extras
... - ... - 4
♠+ = 04(54), more extras (+ controls)
3
♠ = club shortage, min
... - 4
♣ = asks
... - ... - 4
♦ = 4441, low range
... - ... - 4
♥ = 4450, low range
... - ... - 4
♠ = 4441, high range
... - ... - 4NT+ = 4450, high range + (+ controls)
3NT = 4441, extras
4
♣ = 4450, extras
4
♦ = 4441, more extras
4
♥+ = 4450, more extras (+ controls)
You can decide yourself which ranges you want to use. Some use LTC for this but I keep it simple with
min, low = 18-19
min, high = 20-21
extras = 22-23
more extras = 24+
Also, because the initial relay shows values, not relaying shows weakness which makes it easier for Opener to decide whether to accept a sign-off or not. A possible auction would be
2
♣ - 2
♦;
2
♠ - 2NT;
3
♥ - 3NT; (no need to go beyond 3NT having already shown the values with 2NT)
4
♦ - 6
♣
Incidentally, you said that 7
♣ makes but only 6
♦. Why is that? it looks like 7
♦ is a much better contract.