I had agreed to play constructive raises with pard, so 1M-2M is like good 7 to 10 hcp. With 5-7 you bid 1NT + 2M. Then came this hand:
♠ T8x
♥ x
♦ KT9xx
♣ Qxxx
Pard opens 1♠ and I decide to be bureaucratic and bid the agreed forcing 1NT. It goes
Pard RHO me LHO
1♠ pass 1NT pass
2♠ pass pass dbl
pass 4♥ ..??
And there you have it: we've had the whole auction to ourselves but ended up taking the last guess: do I save or do I pass? Well, one thing I know: RHO is the best player in the country and he's a solid bidder. He's not bidding 4♥ to go down and I can tell you 4♥ does indeed make, despite pard having a very defensive hand. I ended up bidding 4♠ and it was the wrong action, as it goes for -800 (in fact pard blundered and went a few more down).
It's easy to see now why this happened. The weak hand didn't say what it had until it was too late. Pard was never brought to the picture. It wasn't the first time I had to cope with this sort of guess. In fact, it was the 3rd time already in 3 months.
I belive this is a strong enough case to say the strategy of bidding 1NT on weakish raises is plain and simply WRONG. Should we drop it? If we're talking of 5-6 hcp and a flattish 4333, I guess you can continue to raise via 1NT. Such a hand definitely doesn't want to go to the 3 level, let alone the 4 level. But any raise with distributional features, I'm convinced now it must bid 2M immediately.

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