Czech Defense Puzzle (Rated 873): Win Material — Tactical Refutation

This puzzle comes from the Czech Defense and shows how a well-timed tactical refutation can punish an exposed king and loose pieces in the opening. White has advanced a bishop aggressively, but that activity also creates tactical targets. The key idea is to look for forcing moves that gain tempo, create a check, and exploit the fact that the opponent’s pieces are not fully coordinated. In classical chess, these short combinations often decide the game before the middlegame is fully developed.