sswarnendu, on Jun 30 2007, 12:02 AM, said:
We know this is Alertable & we DO alert our 1NT opening......but does this rule says it is illegel????can anyone explain?
From my perspective, opening 1NT on a singleton falls into a gray area in the Laws. Different local authorities have established very different sets of regulations.
I'm going to provide my own interpretation. While I think that this is a logically consistent approach, I certainly don't claim than any regulatory bodies would necessarily agree with the following comment.
The crucial issue that needs to be address is whether or not a 1NT opening which, by agreement, can be made with a singleton should be considered to be a natural bid or, alternatively, treated as a Convention. Just so we're all on the same page, I'm going to post the definition of a "Convention".
Quote
Convention
1. A call that, by partnership agreement, conveys a meaning other than willingness to play in the denomination named (or in the last denomination named), or high-card strength or length (three cards or more) there. However, an agreement as to overall strength does not make a call a convention.
2. Defender's play that serves to convey a meaning by agreement rather than inference.
In general, I prefer to be able to evaluate bids on their own merits. For example, if I were looking at a 2
♠ opening and I was asked to rule whether or not the opening was a convention, I would ask to see the set of hands that correspond to a 2
♠. Ideally, this would be the only data-point that I would need to use to make a decision. More specifically, I prefer NOT to use the response structure to evaluate the Conventional Nature of an opening bid. There are good response structures and there are bad response structures. I don't think that a player's skill in choosing/designing a response structure should impact the the Conventional nature of the opening.
However, evaluating a 1NT opening might be an exception to this rule. I'm having a very difficult time determining how one should determine whether an opening has a meaning other than "willingness to play" in NT without looking at the response structure. At the end of the day, I think that the most important question might very well be responder's action with different hand types.
1. If the partnership has explicit sequences by which the NT opener can show a singleton or a void, I'd argue that that their 1NT opening is conventional.
2. If responder doesn't pull the 1NT opening with some unbalanced hand patterns, I'd argue that the 1NT opening is conventional
I'm not entirely satisfied with this line of reasoning, but I haven't seen anything better.
One last point thats worth considering: Even if your 1NT opening is judged to be conventional, you still might be able to play it. For example, the ACBL Midchart allows "Any strong (15+ HCP) opening bid". If you wanted to, you could play that a 1NT opening is a conventional opening that shows 15-17 HCP and any of the following shapes (4432, 4333, 5431, 5332, ...)