Tempo battle intricacies

 According to mr. Caveman there are 180 categories of logical patterns, while there are 60 categories  of one-movers.

That doesn't sound too bad. But the one-movers live in the arena of the tempo battle. So while the categories are simple enough, the subtleties of the tempi adds a layer of complexity over the one-movers.

The general approach of CCT is way too coarse grained to be of much use here. On the one hand there is too much redundancy in the method (too many false flags), while on the other hand the intricacies threaten to drown in the noise.

White to move

r1b4r/1p2kp1p/pqnppbpB/8/2BPP3/4Q3/PP2NPPP/R4RK1 w - - 0 17

Aabling T., J. vs. Hreinsson, H., Iceland 2013/14

I consider chapter 2 In-Between moves as the most important chapter of 1001 Chess Exercises for Advanced Club Players by Ehrwich.

Notice how after the move 17.e5 a whole plethora of potential one-movers springs into life. All not good enough, yet you have to check them all. It reveals that Bf6 has no escape room.

The infamous calculation supersedes rules means apparently master your one-movers.