mike777, on 2024-December-03, 15:55, said:
3S, to me, screams you have more than minimum gf, much more than these examples.
Mike, with your agreements you'll get to play 4
♠ when I reveal the hands.
Cyberyeti, on 2024-December-03, 15:38, said:
I don't know how you're adjusting your GFs but you're not GFing straight off the bat, you're GFing in the knowledge that partner has clubs and spades, hence stiff ♣K almost certainly covers one of partner's losers for example, I can't imagine staying out of game on any of those hands is percentage, and I get much lower loser counts than you do.
This is exactly right. At the decision point for bidding 3
♠ partner knew of our spades and clubs, and also had negative inferences about our heart and diamond suit holdings. This helps inform hand evaluation away from crude MLTC or other simple formulae. This is one of the downsides of playing 4
♠ as a value raise - your hand might have been worth an upgrade in light of new information, but you'll never find out.
More generally, if we have two ways to confirm the trump suit, once with a jump (4
♠) and once without (3
♠), from a bidding theory point of view the jump should contain about 3% of the hands and the non-jump should contain 97%. This is because there are 32x as many auctions from 3
♠ to slam compared to 4
♠. In practice nobody has agreements that efficient, so ~10% is more reasonable. But since most hands in a strong range are minimum, you probably don't exhaust even the minimum HCP value for your range with this 10% rule. That doesn't mean that 3
♠ is garbage, but rather that it's a good idea to play it as wide ranging. Especially since opener still hasn't limited the hand all that much, and may well have slam interest opposite the right minimum game force but not have 5-level safety depending on the controls and side suits.
I'll resume the auction later today, this was just an aside.