Learn How to Win Material: London System Tactics
This puzzle comes from the Queen's Pawn Game London System and shows how a seemingly active attack can backfire when the king is still vulnerable. White must respond to pressure on the kingside while also keeping an eye on tactical resources against the advanced black knight. The key idea is to use a quiet, defensive-looking move to improve king safety and create a stronger tactical reply. In classical chess, these small consolidating moves often decide whether the attack survives or collapses.