Knight fork
White to move. Can you find the best move?
♜♚♘♔
The move
Nc7+
Why it works
A knight attacks two pieces at once, and one of them is the king. The king must move, so you win the other piece. Look for squares that attack king and rook together.
Chess Mirror finds the mistakes you keep making in your own games and turns them into puzzles. Your games stay on your device.