Stalemate Puzzle (Rated 1500): Win a Task-Stalemate — Chess Endgame

This chess endgame is a classic task-stalemate puzzle: the side to move must find a forcing idea that changes the position in a precise way. The key is to notice that the enemy rook is active but vulnerable, and that forcing checks can redirect the king into a line where the tactical point becomes clear. In classical chess, these endgame motifs often hinge on move order, king activity, and whether a capture creates a stalemate resource or a winning simplification.