[barmar]

GIB held ♠AKxxxxx ♥KJxx ♦x ♣K. Auction went 1♠-3♥-6♠. Why is GIB blasting when we're in a game force? The description of the 6♠ says solid spades, that doesn't look very solid to me (it might have held the 10, but I don't think it even had the J). Why isn't it supporting my suit?

I guess it did a simulation and decided that it was unlikely that I had really long hearts since it has 4 of them, so I have to have a balanced hand. But unless I have xxx or Qx, there's a likely spade loser, but if we play in hearts the spades can be ruffed good.

It worked out OK, since I had Qx and was able to raise to the good 7♠.