Three Knights Opening Steinitz Defense Puzzle (Rated 1122): Win a Fork — Decisive Material Gain

This puzzle shows a classic tactical shot in the middlegame where a fork creates a decisive material gain. Black’s active queen and knight coordinate against White’s king and loose pieces, turning a seemingly balanced position into a forcing sequence. The key idea is that one checking move can also attack an important defender, leaving White unable to keep everything protected. In classical chess, these short combinations often decide the game by winning the queen or forcing a favorable simplification.