Chess Rules in a Flash

The chess board is composed of 64 equal squares, alternately light and dark squares. This has been the case since the middle ages.

The chess board is placed in such a way that the corner square to the right of each player is white. The eight rows of squares running from one player to the other player are called files.

The eight rows of squares running at right angles to the files are called ranks. The strips of squares of the same color, touching corner to corner, are called diagonals.

The diagram on the left shows the initial set-up to start a game. Both players start with 16 pieces. Some people do not regard the pawns as pieces.

They would say you start with 8 pieces on the back row and 8 pawns in front. The pieces for both sides are:

A King, Queen, 2 Rooks, 2 Knights, 2 Bishops and 8 pawns.

White Rooks: a1,h1; Black Rooks: a8,h8; White Knights: b1,g1; Black Knights: b8,g8; White Bishops: c1,f1; Black Bishops: c8,f8; White Queen: d1; Black Queen: d8; White King: e1; Black King: e8.
White pawns: a2,b2,c2,d2,e2,f2,g2,h2;
Black pawns: a7,b7,c7,d7,e7,f7,g7,h7.

Apart from castling, you make moves by moving one of your pieces from one square to another square. The destination square on a given move must be either vacant or occupied by one of your opponent's pieces.

Only the Knight may cross a square occupied by another piece. The only possible exception to this rule is the special castling move between King and Rook.


You capture an enemy piece by moving one of your pieces to a square occupied by your opponent's piece. On capturing, you immediately remove your opponent's piece from the chess board.

The various pieces have their own unique movements. For a crash course on the main rules you can take a look at the chess basics.

The pawn moves only forward to the other end of the board. The Knight moves in an L-shaped fashion. You may also find the Knight Tour interesting.

The Bishop's move gives it maximum range on the diagonals. The Rook's move gives it maximum range on the straights.

The Queen's move gives her maximum range on the files, ranks or diagonals on which she stands. The King moves just like the Queen except instead of enjoying maximum range he is restricted to minimum range. He can move only one square at a time in any direction.

Some of the following sections apply to playing over the board in the offline world. You'll know which ones as you read them. They won't effect your online games. A move is completed in the case of:

1. a move to a vacant square, when your hand has released the piece;

2. a capture, when the captured piece has been removed and your hand has released your piece;

3. castling, when your hand has released the Rook;

or

4. a promotion of a pawn, when the pawn has been removed from the board and your hand has released the new Queen.

So long as you first advise your opponent, and only on your turn, you may adjust one or more pieces on their squares. Apart from that, if on your move you touch:

1. one or more of your own pieces, you must move the first piece touched if it is possible to do so;

2. one or more of your opponents pieces, you must capture the first piece touched that can be captured;

It is illegal to leave your King in check at the end of your move. You must avert the threat if at all possible.

If, during a game, it is discovered that an illegal move was made, the game shall be reverted to the position it was before the illegal move was made.

If the position cannot be reinstated, the game shall be annulled and a new game played.

When a player threatens the opposing King with capture, the King is said to be in check.

If your King is in check then you must avert its capture or you lose the game immediately. It is illegal to leave your King in check. To alleviate the threat:

1. Move the King to a square not commanded by your opponent's pieces,

2. Capture the attacking piece, or

3. Block the check by moving one of your pieces between the attacking piece and your King.

You win when:



1. You checkmate your opponent's King,

2. Your opponent resigns,

3. Your opponent's clock runs out of time, or


4. Your opponent refuses to comply with the chess rules during the game.

In the diagram on the left you can see that neither King has enough troops to checkmate the other. This situation results in a draw. The game is drawn:

1. If your King, on your turn to move, is not in check and you cannot make any legal move. Your King is then said to be "stalemated."

2. If agreed between the two players.



3. If you claim that the same position (a) is about to appear or (b) has appeared, for the third time, the same player having the move each time.

The right to claim the draw belongs exclusively to the player:



1. who is about to play a move leading to such a repetition of the position, or

2. who is about to reply to a move that has produced the repeated position.
If you move without claiming a draw in the manner described in 1. or 2. you lose the right to claim a draw. This right is restored to you, however, if the same position appears again, you again having the move.

If pieces of the same kind and of the same color occupy the same squares, but the possibilities for moving these pieces are not the same, then the player moving cannot claim a draw.



For example, you would no longer be entitled to demand a draw if, after the repetition of a position, castling or taking a pawn "en passant" was no longer possible.



You may draw if you show while moving that at least fifty consecutive moves have been made by each side with no capture of any piece or the movement of any pawn.



You may only propose a draw when you have just completed a move. You start your opponents clock after the request, not before. Your opponent may accept the draw or, either orally or by completing a move, he may reject it. In the meantime you cannot withdraw it.

You lose when:

1. Your King is checkmated on the board,


2. You resign,


3. You run out of time on your clock,


4. You refuse to comply with the chess rules during the game.

If both players refuse to comply with the rules or if both players are more than an hour late, both players lose.