Douglas43, on 2021-August-24, 09:41, said:
Could you advise please whether "queen points" are a real form of hand valuation or is it just a made-up example for the purposes of the thread? Excuse my ignorance but I've played for 40 years without ever hearing of them...
As Paul mentions, the origin of QPs is from relay systems. In general, after shape has been shown there are 3 popular follow-up methods - 4-way RKCB, CP and QP. Most relay systems will be able to use 2 of these but not the third.
4-way RKCB is the simple concept of having a way of setting the trump suit and asking for key cards all in one go, with one auction for each suit.
CP are Control Points, also known as AK points or Blue Team Controls. This is the A=2, K=1 scheme that Paul assigns to Woolsey but they are actually much older than that. They are excellent for working out if slam is possible once partner's exact shape is known.
QP are queen points, often called AKQ points, and are similar to CP except that the scheme is A=3, K=2, Q=1. The advantage of these over CP is that they not only provide a good estimation of slam opposite a strong hand but are also provide a much better estimation of the general strength of the hand. The reason for this comes from their similarity to the AKQ parts of Zar Points (A=6, K=4, Q=2) and modified Milton (A=4.5, K=3, Q=1.5). For this reason some bidding systems even use them in the immediate response to a strong 1
♣ opening and not just as a follow-up to shape relays. In this way QP can genuinely be described as a hand evaluation method even though that was not actually what they were invented for. The point about a singleton king is also completely true. Different authorities do use different values so if you want to know what a particular pair uses then you have to ask if all they do is use the term "Queen Points".