Chess lesson # 17: Chess tactics | Pins vs Skewers | Learn how to play Chess the right way

Picked one by one from a mixed channel. Transcript check: both title readers certain; 2 of 5 sampled certain picks confirmed by transcript, none failed. Channel rule: Include only the numbered 'Chess Lesson #' course videos and explicit concept lessons (e.g. calculation, attack rules, outposts, what to do in quiet positions), and exclude blitz, speedrun, 'I played/I got outplayed' game recaps, and novelty uploads.