[Free]

whereagles, on 2011-September-06, 14:23, said:

I doubt that... if you go through many deals in a simulator with dbl dummy solver, you'll see that rightsiding makes a difference like 1 out of 30 hands, and even then that difference is often marginal (e.g. makes 3NT +1 from the good side, 3NT = from the other).

Well, to be honest, my opps don't always know if I have a distributional hand with 12HCP, a balanced hand with 18HCP, a long side suit, ruffing value, and where all my honours are situated. Me and my partner have never played against a DD solver...

[MrAce]

I agree with Mich-b and Free about rightsiding.

In addition to what Andy and Mich-b said about the advantages of multi, i it is also important to not give opponents a suit to use as a cue. Of course opponents will agree how to cue one way or another, but as far as i read the suggestions it seems space consuming and definetely an advantage.

About the passable version of multi creating problems for opponents. It is true that most effective multi defenses keeps the "first pass later bid" options. And as i said this in another thread, some pairs solve this by simply not letting opponents play undoubled if one opens 2♦ and other one passes. They have to balance unless they can afford to let it go when passer's possible hands doesn't matter for balancer.

[whereagles]

mich-b, on 2011-September-07, 00:31, said:

The specific case where one hand is a "weak 2" and the other hand is , hmm... Anything.... is much different than "rightsiding generally".
Mostly because the nature of the weak 2 hand is known , and the other hand can be anything (Balanced, side suit , side shortage, fit or no fit) which suggests a large advantage to concealing it, and making the defense harder - Should the defense play trumps to prevent ruffs? should they try to cash out? Of course all of this is not an issue for a dbl dummy solver.

I agree with this in general. HOWEVER, it's not so clear-cut as it may seem. When dummy has the trump length, you know exactly how many cards to cash in each suit, so exposing the weak hand may actually be a double-edged sword.

But yeah, I agree the advantages of conceling the stronger hand are bigger in the specific case of the multi than in general. Trouble is this only happens like 1/3 of the time... the other time opps outgun us.

[Fluffy]

I left tone more question out: suit quality.

For example assume you have a mediocre suit such as ♠Q97654

Can you construct a full hand (not 6-5) a position and a vulnerability where you would want to use one opener, but not the other? (this is assuming your range/agresivity is the same for both)