[rmnka447]

A forcing 1 NT reply with this hand for me. Don't see enough to make it a game force and am void in partner's suit (i.e. known misfit), so have to downgrade it even more.

[Phil]

I'd start with 1N.

This hand may play at the three level or in slam, or somewhere in-between.

[jdonn]

I like 2♣ personally. At least it will let me show my shape. It could get too high but 1NT could get not high enough - imagine partner rebids 2♠ or 2♦ and you bid 3♣, you can easily miss a 5-3 heart fit or 3NT. Even if partner rebids 2♣ over 1NT I have no idea what we should do, and our auction will definitely be a lot worse than if I had started with 2♣.

On the auction you had, double is definitely penalty. Silly partner

[rhm]

 aguahombre, on 2015-June-13, 07:47, said:

People who say they play 2/1, then bid 2C over 1S with this hand, are not playing 2/1 G.F.

Sorry, but this is utter nonsense.
The question is whether to force to game or not.
Sure if you force to game the deal may be an entire misfit and you will get too high if partner is minimum.
But the opposite is also true.
You could easily be cold for 7♣, e.g. ♠QJxxx ♥AK ♦Ax ♣xxxx or similar. Try to get close after a forcing or semi-forcing 1NT.
Oh I know many can produce wonderful sequences on paper when both hands are in view leading to the best contract, but never in practice at the table.

That partner has five spades is to be expected and no real indication yet of a misfit. If he has more spades he is not that likely to be minimum since he could have opened a weak two.
The danger is of course a spade - diamond twosuiter, which is possible, but then he need not be dead minimum.
I consider the risk of getting too high by forcing to game less than the chance of ending at the wrong strain or level by bidding 1NT.
I am pretty sure Kit Woolsey would agree.

Rainer Herrmann

[Cyberyeti]

Rainer nails this, that you've forced to game doesn't mean you'll make it, but it seems the best course of action on a hand that seems to make game decent opposite ♥KJx, ♣Q and 9 other cards. If you come across a 5251 12 count opposite then you probably lost the gamble, but I think you win more often than you lose.

[kuhchung]

I always just GF these.

[Phil]

 jdonn, on 2015-June-17, 12:40, said:

I like 2♣ personally. At least it will let me show my shape. It could get too high but 1NT could get not high enough - imagine partner rebids 2♠ or 2♦ and you bid 3♣, you can easily miss a 5-3 heart fit or 3NT. Even if partner rebids 2♣ over 1NT I have no idea what we should do, and our auction will definitely be a lot worse than if I had started with 2♣.

On the auction you had, double is definitely penalty. Silly partner

You noticed its MPs, right?