Chess is a game of strategy
and tactics.
Chess is played on a square board that is divided
into 64 squares (8-by-8) of alternating color (32
"white", 32 "black"), which is very similar to that
used in draughts (checkers). Upon the board move 16
"white" and 16 "black" pieces. The actual colors of
chess sets are usually white and black, cream and
brown, red and black, or buff and green; but the pieces
and squares are always referred to as "white" and
"black".
Sets used for play are commonly made of wood or plastic,
although ornamental sets exist made of stone, glass,
or metal, which are often used to decorate homes.
Ivory was fairly commonly used at one time. Likewise,
the chessboards themselves can be made of wood, cardboard,
leather, stone, glass, or any other material that
the design can be placed on. Chess tables (either
of wood or stone) are sometimes made with a chess
board designed into the surface. Many travel boards
fold into a box that the pieces fit into and some
of them use magnets to hold the pieces in place.
A player who makes an illegal move with a piece must
retract that move and make another one, if possible,
with the same piece. If the mistake is only noticed
later on, the game should be restarted from the position
in which the error occurred. However, if blitz chess
is being played (where both players have a limited
time, e.g. five minutes) and the player who has made
a mistake has pressed his/her clock, the other player
may call the illegal move and win the game.
Check and checkmate When a player makes a move that
threatens the opposing king with capture, the king
is said to be in check. If a player's king is in check
then the player must make a move that eliminates the
threat of capture, which does not necessarily mean
the king must be moved. The possible moves to remove
the threat of capture are: Move the king to a square
where it is not threatened. Capture the threatening
piece. Place a piece between the king and the opponent's
threatening piece. A player may never leave his king
in check at the end of his move. (wikipedia)
More
Chess Rules