Castle through check????

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Avatar of WordUpp

What gives

here???  I always assumed one could not castle "through" check!  In this instance, my opponent is allowed to cancel through the B1 square that my bishop is guarding!  Is my interpretation wrong??

Avatar of xFallesafe
The king can’t pass through check, but the rook can.
Avatar of WordUpp

Thanks much!!  That explains it!!!

 

Avatar of blueemu

Rooks laugh at checks.