So I had this idea. . .

[Grisly Dreams]

So, okay: You got yer Red Seven Count, which keeps the count from getting too unbalanced by only counting half the sevens. And you got yer KISS counts, which keep the count from getting too unbalanced by only counting half the twos.

So I had this idea: what if you only counted half the sevens AND half the twos? How would that work?

I tried to feed the numbers into CVData's efficiency calculator, using half points for 7 and 2, since it won't do suit-aware.

The numbers were kick-ass: BC .99, PE .55, Ins .80.

Then I realized that by using half-point values, I had simply recreated the Revere Point Count. (I'm a genius!)

But I'm still curious: first, is there any reason why suit-aware counts only seem to show up in unbalanced counts? Second, is there any easy way to find out the true efficiencies for the count?

 

[QFIT]

Actually, it's called the C-R Point Count (Chambliss-Roginski). But you're right, it's just RPC.

 

[moo321]

But I'm still curious: first, is there any reason why suit-aware counts only seem to show up in unbalanced counts?

Yes, it's usually a way to un-balance the count. If you had half suits in a balanced count, you'd have to have a high card half-suited to balance it. Like half-suiting the nine.

 

[Automatic Monkey]

Yes, it's usually a way to un-balance the count. If you had half suits in a balanced count, you'd have to have a high card half-suited to balance it. Like half-suiting the nine.

And it's used on level 1 counts, because at level 1 a full rank unbalance is really too much (a problem with unbalanced KO). A half rank is just about perfect for any count where the tens are -2.

 

[Grisly Dreams]

If you had half suits in a balanced count, you'd have to have a high card half-suited to balance it.

But if you half-count 7s AND 2s, you don't need to half count a rank in the high end. The low end adds up to the same count (+5) by the end of the deck that it does in Hi-Lo. But you've counted some sevens, which the Hi-Lo misses, and you've uncounted some twos, which the Hi-Lo overvalues.