Europe Chess Champion - GB - Page 15
Here, all 3 situations are seen in a simple example.
White is in check, threatened by bishop d5 and
must make a move:
1) The king moves to h2 or g1 (not to g2 where it
would remain in check);
2) The rook captures the black bishop;
3) The rook moves to g2, thus eliminating the
check.
If a check cannot be countered by any of these
3 tactics, the king is checkmate
,
ie it couldn’t
possibly avoid being captured by the opponent’s
next move).
4.1.4
Stalemate – drawn game
If the player to move
cannot
make any legal move
and his king is not in check,
the game is a draw.
This is called stalemate.
Here, it is Black’s move. His king is not in check, but
any move he makes with it would put it in check.
Black therefore has no legal moves and is
stalemated
.
A draw may also be claimed if (a) exactly the same
position occurs three times, with the same player to
move; or (b) during a sequence of 50 moves for each
side, no capture is made and no pawn is advanced.
A draw may also come about simply by agreement
between the players.