MrAce, on 2016-November-27, 03:03, said:
And we will need 2 NT to be natural on this particular auction. A hand that was probably not good enough for 1 NT overcall or did not have the shape for it (such as stiff or void spade)
Why do you believe 2N as NAT INV is needed here but not in response to a 2/1 or Fantunes 1
♠ opening? Is it because the balancing 1
♠ overcall doesn't promise 5+ S? If it does, then it can be treated much like a standard 1
♠ opening except for the obvious range adjustments that have to be made. For example, if you play
1
♠ = "11-21, 5+ S" (=> 1N = 5-12, semi-forcing),
then you can also play
P-(1
♥)-P-(P); 1
♠ = "7-10, 5+ S" (=> 1N = 9-16, semi-forcing)
and not be worse off after the balancing overcall than after the opening, at least in the otherwise uncontested bidding.