This is an attempt to convert Evolved Binky Points into some formulas that are easier to remember than huge tables of numbers. This took a lot more work than I had initially thought. Trying to find a method that is more accurate that HCP, but doesn’t use a lot a complicated fractions is just about impossible. In order to keep things simple I’m avoiding fractions wherever I can, but it means there’s a slightly different scale of strength. I initially tried to make this scale to “normal points” so an average 13-point hand would be about 13 points in the new system. I just couldn’t do it without fractions that would be almost impossible to keep straight at the table. This new distribution has ~1.5 times the scale of normal points, so to convert these to “normal” subtract a third. To convert from normal to these values, multiply by 1.5.
A typical opening hand for standard methods should have ~19 points.
You should typically need:
34 for the 3-level
39 for the 4-level
44 for the 5-level
49 for the 6-level
54 for the 7-level
Of course these are just guidelines, like the 26 points typically needed for game. Certain scoring situations (like vul at IMPs) may push you to change these recommendations.
Here is my new method of hand evaluation:
HONOR POINTS (HP):
A = 6
K = 4
Q = 2
J = 1
(This is just HCP + Controls)
* Add 1 point for every suit that has 2+ honors (including the Ten)
* Doubletons: Don’t add the point for 2+ honors and subtract one additional point for QJ. (Don’t subtract one for Qx or Jx as these are already valued low enough)
* Singletons: Honors are valued as the next weakest honor (A=4, K=2, Q=1, J=0)
DISTRIBUTION:
Add points for both shortness and length
* Shortness points: 5/3/1 for void/singleton/doubleton
* Length points: 1 point for each card over 4 in a suit
REVALUATION (AFTER PARTNER BIDS)
This is a complicated matter and I’m working on a lot of different things to try and come up with an easy to use metric. For now use this simplified way:
* Don’t count shortness in partner’s suit (unless you find an 8-card fit elsewhere)
* Give +2 bonus for each trump you have over an 8-card fit
EXAMPLES:
KQJxx
-
QJxxx
AJT
* Initially: 14 HCP + 3 controls + 3 suits with 2+ honors = 20 HP. 5 for the void and 2 for the 5-card suits = 27 total points.
* Partner bids spades: +4 for the 10-card fit = 31 points.
* Partner bids hearts: – 5 for the void in partner’s suit = 22 points.
Kxx
Qx
JTxx
ATxx
* Initially: 10 HCP + 3 controls + 2 suits with 2+ honors = 15 HP. We get 1 distribution point for the doubleton = 16 total.
* Partner bids spades: No change = 16 total.
* Partner bids hearts: -1 for the doubleton = 15 points.
For NT contracts you can still use these HP, but for distribution simply count 1 point if you have a 5+ suit. You should need about:
34 HP for 2NT
37 HP for 3NT
44 HP for 6NT
48 HP for 7NT
Now all I need is a snappy name for my evaluation system. Since my initials are TS, I’ll call them TS points, or TSP. That will do for now I guess.
COMPARING EVALUATORS
I’ll extend my previously posted table of evaluator comparisons to see how much improvement you can expect by using this method:
ERROR SCORE HCP 1.23 -0.49 HCP+321 1.07 0.00 HCP+531 1.05 0.07 Zar 1.05 0.08 BUMRAP+321 1.03 0.14 BUMRAP+531 1.02 0.21 TSP 1.02 0.21 Binky 0.99 0.32
ERROR is the average # of tricks there is in difference between how many tricks we think we can take and how many we actually take.
SCORE is an estimation of the IMPs/board we expect to gain against a team that uses a simple HCP+321 evaluation method. It’s a measure of how much payoff there is for using a better evaluation system.
HCP is A=4, K=3, Q=2, J=1
HCP+321 is HCP + 3 per void + 2 per singleton + 1 per doubleton
HCP+531 is the same with more points assigned to shortness
Zar is HCP + Controls + twice the length of longest suit + once the length of second-longest suit minus length of shortest suit.
http://public.aci.on.ca/~zpetkov/
BUMRAP is a substitute for HCP: A=4.5, K=3, Q=1.5, J=0.75, T=0.25
TSP is the method described in this article. It’s an attempt to find the best evaluator using simple whole numbers.
Binky is Thomas Andrew’s evaluator:
http://thomaso.best....dge/valuations/