Solution
20. ♜xa8 ♜xa8 21. ♛h4 h6 22. ♛xh3
The position
This expert puzzle (rating 2451) asks White to move to find the winning idea. It features these themes: Middlegame.
It is White to move. Look for the tactic hiding in the position — Middlegame. Drag a piece on the board to play your move; the puzzle will tell you if you found the best continuation.
Take 50,000 puzzles anywhere
Get Chess Puzzles Trainer for iPhone and iPad — the same puzzles, offline, with progress tracking and spaced repetition.