Learn How to Exploit a Discovered Attack: Tactical Refutation
This puzzle shows a classic middlegame tactical refutation in the Bishop's Opening Berlin Defense. White has built strong pressure with active pieces and a queen on the fourth rank, but the position is tactically unstable because the black king is exposed to a forcing kingside attack. The key idea is a discovered attack that opens lines against the king while also winning material. In practical classical chess, these moments often decide the game immediately because one tactical shot changes the evaluation from advantage to collapse.