Castling kingside with a knight on F7

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Avatar of Hugo_LSC

Hi guys,

Please can you explain why black can't castling  kingside in this situation?

I know the five rules for castling. 

Black King isn't in check. By castling, the king will not be into chek or through check.

What am i missing here?

Thank you

Avatar of notmtwain

There is nothing I can see. Did that come from a game here? Please provide the link.