Two easy (too easy?) chess problems

From the starting position black puts white in checkmate in three moves. Using the same piece each time. How?

How to make a double check where the piece that you moved doesn't threaten the opponent's king?

do you mean the same piece moves every time?
en passant

The hapless white is losing so he is allowed to move different pieces, but yes, black moves the same piece each time.. and indeed, en passant is what I was going for.

Originally posted by talzamir
From the starting position black puts white in checkmate in three moves. Using the same piece each time. How?

How to make a double check where the piece that you moved doesn't threaten the opponent's king?

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Nice little problem.