Lost Piece Exercise: The audio will tell you the position of most of the pieces on the board. Can you work out where the missing piece is meant to be?

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FEN for today's exercise:

And the answer is...

The lost piece must be a Queen in this puzzle. While a bishop could control the same squares, there is no legal way this position could be reached for a bishop. The bishop would have been on this same diagonal for Black’s last move, meaning Black would have had to play something illegal to reach this position.

A Queen however could move to h1 from h2 or g1 to deliver checkmate.