Advantages of Walsh
* Over 1D response to 1C opening, skipping the major suits and rebidding 1NT helps the bidding in the
following ways:
- When there are not enough points to play a game, it gives the partnership a chance to play an optimal
1NT, 2C or 2D contract.
- When the partnership has enough points to play a game and the Responder doesn’t have a four-card
major, 3NT can be bid without using any conventions.
- When the partnership has enough points to play a game and the Responder has five diamonds and a
four-card major, reaching the correct 3NT, 4M or 5D contract is not a problem.
* Since rebidding 1M promises five clubs and a four-card major, it is easier to compete, bid a game or
bid a slam with a 5-3 club fit.
* It is possible to penalize opponents with a surprise distribution if opponents balance the 1NT rebid.
* Most importantly, it is very difficult for the defense to lead and defend against no-trump contracts after
the 1NT rebid; this is the biggest advantage of the Walsh convention.