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2) most of the times
3) some times
Matters Of Evaluation Upgrades
#21
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Posted 2008-January-25, 04:21
#22
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Posted 2008-January-31, 04:55
I don't know if there is any interest in what happens on these hands, personally I was just interested in the results of the poll.
Hand 1 you will play in 4H if you open 2NT, partner will play 4H if you open 1S. It doesn't matter which way up you play it.
Hand 2 you will play in 1S making 6 or 7 tricks if you open 1S, and 3NT making 6 or 7 tricks if you open 2NT.
Hand 3 you should play in 4S+1 whetever you open, and again it doesn't matter which way up (in fact the final declarer will depend on your exact methods).
Interestingly, one US WC player canvassed separately opened 1S, 1S and 2NT (i.e. 3 only). But we weren't certain he appreciated that your methods could still find all the 5-3 major suit fits after a 2NT opening.
I did a simulation on hand 2 (the one which generated most debate at the table). The conclusion from the simulation was that
- it is not 'worth' opening a 20-22 2NT in that you will not miss a game opening 1S that you would otherwise reach.
- on the same basis, you shouldn't open 2NT opposite a non-passed hand, there is too high a risk of getting too high.
- I didn't believe that the positional advantage from opening 2NT outweighed the cost of going off in 2NT/3NT. My partner (who opened 2NT) looked at the same simulation results and claimed that it did. So we'll leave that one as unproven.
Hand 1 you will play in 4H if you open 2NT, partner will play 4H if you open 1S. It doesn't matter which way up you play it.
Hand 2 you will play in 1S making 6 or 7 tricks if you open 1S, and 3NT making 6 or 7 tricks if you open 2NT.
Hand 3 you should play in 4S+1 whetever you open, and again it doesn't matter which way up (in fact the final declarer will depend on your exact methods).
Interestingly, one US WC player canvassed separately opened 1S, 1S and 2NT (i.e. 3 only). But we weren't certain he appreciated that your methods could still find all the 5-3 major suit fits after a 2NT opening.
I did a simulation on hand 2 (the one which generated most debate at the table). The conclusion from the simulation was that
- it is not 'worth' opening a 20-22 2NT in that you will not miss a game opening 1S that you would otherwise reach.
- on the same basis, you shouldn't open 2NT opposite a non-passed hand, there is too high a risk of getting too high.
- I didn't believe that the positional advantage from opening 2NT outweighed the cost of going off in 2NT/3NT. My partner (who opened 2NT) looked at the same simulation results and claimed that it did. So we'll leave that one as unproven.