Larry Smith wrote on Fri, Jun 4, 2004 01:53 AM UTC:
Moving Rook b1-b4 will block the attack from that Bishop.
Why not try King e1-d2? The standard rules state that a King cannot be
left in check, the move is legal for the King. The only standard rule
which states that a King cannot moved through an attacked position is
while castling.
In standard Chess a King may not move to an attacked cell, but d2 is
not attacked by the Bishop since it will be empty. The King will not
be present to be captured by the Bishop on the next move.