Can Someone Explain That to Me Please ?

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Avatar of WalWalWalWal
Before:

https://ibb.co/wRzXC3m

After:

https://ibb.co/bHw2YZ4

???
Avatar of K_Simonson
WalWalWalWal wrote:

 

https://www.chess.com/terms/en-passant

Avatar of WalWalWalWal
Thanks, en passant !