 mike777, on 2014-February-25, 21:58, said:
mike777, on 2014-February-25, 21:58, said:
It might help to tell us what transfer walsh is ..how it works ...and why we should care?
I do understand that transfer walsh is the bbo flavor of the year.
At the most basic level, transfer Walsh applies transfers to a Walsh style response structure to a 1
♣ opening.
(Once again simplifying) playing a Walsh style over a 1C opening, responder will prioritize a 1M response over 1
♦ with hands that are only worth one bid.
As a practical example
After a 1
♣ opening, Walsh players would respond 1H holding either of the following two hands
♠ J54
♥ KT72
♦ QJ52
♣ 54
♠ J54
♥ KT72
♦ QJT52
♣ 5
In contrast, players who bid "up the line" would typically show Diamonds first.
Playing a "transfer" Walsh style, players would advance 1
♦ with hands that Walsh players would bid 1
♥ and bid 1
♥ with hands that Walsh players would bid 1
♠.
On the "why is this a good idea" front:
1. A transfer Walsh style is more efficient at using bidding space because it does a better job aligning the frequency of the response with the level of the response.  (Playing standard Walsh, 1D responses are significantly less frequent than 1
♥ responses)
2. A transfer Walsh style is better at supporting very light responses to 1C openings
3. A transfer Walsh style solves some thorny problems that plague more traditional response structures (think Bridge World Death hand)