Learn How to Win a Fork: Decisive Material Gain
This puzzle comes from the Queen's Gambit Declined, specifically an Albin Countergambit structure where Black uses active piece play to punish White's loose coordination. The key idea is a forcing check that creates a fork-like tactical sequence against the white knight and king, turning a promising position into a decisive material win. In practical classical chess, these patterns often arise when one side’s king is still uncastled and a piece on c5 can be attacked by the queen with tempo.