3 | | | ^P | | | | | ^P |
|---------------------------------------|
2 | | | | | | | ^P | |
|---------------------------------------|
1 | | | | | ^R | | ^K | |
+---------------------------------------+
a b c d e f g h

DIAGRAM 5.

or he forfeits the game. This is the only case in which a player
is not at liberty to make any move he likes.

Unless the attacking man can be captured there are only two ways
of getting out of check. One of these is to interpose a man
between the King and the attacking piece, and the other to move
the King out of the line of attack. In Diagram 5 Black could give
check by moving the Bishop to c5. In answer to this White has
four moves at his disposal. He may either move the King to f1 or
h1 or h2, or he may interpose his Rook on e3. The latter would be
very unwise as Black would simply take the Rook with his Bishop,
again checking White's King. The situation would then not have
changed at all except that White would have lost his Rook.
White's King could not move to f2, for this would leave him still
attacked by the Bishop.

Instead of checking on c5 Black could have attacked White's King
on h2. But in this case the King would have simply captured the
Bishop.