Opening Puzzle (Rated 1533): Pin — Petrov's Defense
In the Petrov's Defense Modern Attack, tactical awareness can outweigh development and material counting. The key idea is to recognize when an attacking piece has moved beyond the protection of its original role. Here, Black’s king can safely challenge an advanced bishop because the surrounding tactical details favor a direct capture. The position demonstrates how a pin, skewer, and hanging piece can combine to refute an ambitious attacking move and produce a decisive material gain.