Learn How to Win a Chess Endgame: Advanced Pawn
This chess endgame is all about converting activity into a passed pawn. White’s rook is active, the king is centralized, and the opponent’s king is too far away to stop the plan in time. In positions like this, a long sacrifice can be correct if it creates a decisive advanced pawn and forces the defender into passive recapture. The key idea is that material is less important than the speed of promotion and king coordination.