either King is in check and cannot get
out of it with any legal move, it is
said to be a checkmate and the game
for a King to be checked or be placed in
check, an opponent
has to make a move so that one or two of his pieces attack the opposing
two pieces is possible as shown above in
the double check diagram.
King can directly check
the opposing King himself, but a King
can make a move which exposes the other
King to a discovered check.
of Chess won’t allow any player to make
a move which puts his own King
In casual games, a checking player
can say “check” when making a checking
move but is not
required and it is no longer done in
Don’t make useless check moves as it
might provide the checked opponent a
move opportunity or tempo to place his
King into a safer position.
an opponent’s King might force it to move
out of check and losing his castling
In descriptive and algebraic Chess
notation, a checking move is noted like
any other move and a “+”
sign is appended after the
move, e.g. NB6+ and Nf6+.