Cyberyeti, on 2013-November-15, 08:04, said:
We can bid this one pretty trivially after a 1♥ opener, but it's still a slight guess:
1♥(4+)-2♣(Not GF)
2N(GF not necessarily balanced, we play a weak NT)-3♣(5+♣)
3♥(5+♥ not 4♦)-3♠(spade stop, possible suit)
4♣(no ♦ stop, 3♣)-4♦(kickback)
4♥(0/3)-5♣(signoff opposite 0)
5N(3, no side K but other goodies)-6♣
I suppose it's just possible partner has A10x, AJ109x, QJ, Axx but anything better than this or a doubleton spade is sufficient, and even this has chances.
It's more difficult for a strong NT pair with 2♣/3♣ NF, basically the club hand has to work out his partner is non minimum then ask aces and rely on an extra trick materialising somewhere from the extra values or a doubleton spade.
Why don't you bid the obvious
1
♥-2
♣
2NT-4
♣ ?