TWO4BRIDGE, on 2011-March-05, 09:01, said:
Modified Swedish-2NT where
1M - ??
1S - 3H! - ( DBL)
p - RDBL = ♥A
3S - 4S = no ♣ Ctrl or ♥ K
4NT - 5S ( 2 + ♠Q or extra length )
6S
1M - ??
Splinter Raises
3D! = ♣ shortness
3oM! = ♦ shortness
3NT! = oM shortness
3D! = ♣ shortness
3oM! = ♦ shortness
3NT! = oM shortness
1S - 3H! - ( DBL)
p - RDBL = ♥A
3S - 4S = no ♣ Ctrl or ♥ K
4NT - 5S ( 2 + ♠Q or extra length )
6S
Why praytell would South keycard with a void? As a side note, this auction is no different than 1♠-4♦-4♠ except that opener has even LESS reason to bid on now.