Yeah, it's the sort that can distract you with tempting lines, so if there's a penalty to solving in less than... anything under a minute, then IMO that's silly and just encourages people to guess. In a real game (OTB tournament game) you should calculate multiple lines carefully, not rush a few short lines then guess.
But again, I'm not really sure how tactics work online. I did some untimed ones on chesstempo years ago.
Yes, both Techniques and Speed are important. But my strategy is " Correct technique first, speed will follow later". It was the strategy I was told during my swimming training.
I've heard that in other places too.
The ability to have speed + accuracy is a result of practicing slowly and carefully. Something like that. I guess you're right, that applies to chess too.
Rook on 8 to c2 followed by takes on the d file, Rd5, and capture the bishop? Oh I guess Kh2 or something.
How about a6+b6 to kick the queen off the 5th rank?
Hopefully there isn't something embarrassingly bad about that haha. Just a guess.
I came to the a6 + b6 conclusion after about 30 seconds, can't see anything wrong there.
Oh crap, I did not see a6!! , lol.
I also mentioned a6