KEY

H17 GAME: DEALER HITS SOFT 17
S17 GAME: DEALER STANDS ON 17

N  No, don't split. TC True count
Y  Yes, split. RC Running count
H  Hit. OTW Otherwise.
Ds DD if able, OTW stand. < Less than.
Double down (DD) ≥ More than or equal to.
Stand >  More than.

Dealer

You 2 3 4 5 6 7 8 9 T A
12 H3 H2 S<0 S S H H H H H
*Or, an easier way to remember it might be as below, but basic strategy is to stand on 12 vs 4.
*12 H3 H2 H≥0 S S H H H H H
13                    

Hard 12 stands on dealer 4 - 6, otherwise hit,
unless TC ≥3 on 2, TC ≥2 on 3, then stand.
Hit 4 on any count <0/*stand on 4 if TC is 0.

BJ Lines  Hard 11  Hard 13