Puzzle:
lichess.org/training/71873
Could someone please explain the computer's solution here? After 17 Rxf6 (RxB) why not g7xf6 (g7xR), in which case white has lost the exchange? There is no immediate mate as black has a tempo to block the bishop with f5. Is it because white eventually wins by bringing in the remaining rook? That's not the usual kind of puzzle solution: white loses material but gains a strategic advantage.
lichess.org/training/71873
Could someone please explain the computer's solution here? After 17 Rxf6 (RxB) why not g7xf6 (g7xR), in which case white has lost the exchange? There is no immediate mate as black has a tempo to block the bishop with f5. Is it because white eventually wins by bringing in the remaining rook? That's not the usual kind of puzzle solution: white loses material but gains a strategic advantage.