Tactics? You mean pins, forks, skewers, discovered attacks, overloads and so on?
An 1800-2000 player is supposed to have a good handle on that sort of stuff already.
Advanced stuff like interference, line cutting, sealing-and-sweeping? Useful to know, but rare.
Line cutting:
Which specific tactic themes are the most important to train for 1800-2000+ players?
Any advice would be great.
Thanks