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chess

Play Chess and beat your opponent to the mat. Chess is one of the oldest games. In its current version is played at the end of XV century. Chess is a game for two opponents, each one has 16 pieces: 8 pawns, 2 bishops, 2 knights, 2 rooks, 1 queen and 1 king. Chess game ends when the king be removed. Zadvizhenie rules of chess pieces are: Pawns move one step further, horses move forward two D shaped and one on the left or right in all directions, officers move diagonally in all directions, the queen moves diagonally and rights line in all directions and figure king, the king can move only one square!

When a pawn moves two squares forward and there enemy pawn on an adjacent field to its final destination, then the opponent's pawn can take your and move the field beyond the end of your position, but only if the next move. For example, if the black pawn moves two squares forward ie from f7 to f5, then a white pawn on e5 or g5 can take it "en passant" and put the field f6.

When a pawn reaches the last (eighth) horizontally on the chessboard, it can be replaced after the selection of players for the queen, rook, bishop or knight of the same color. Usually chosen to replace the pawn with the queen, but in some cases another piece is chosen. The second process is called podpromotsiya. The diagram on the right field c7 pawn can choose to reach the eighth and horizontally to produce in better shape.

Not necessarily a game of chess to a mat finish - a player can move forward if the situation seems hopeless. The party may also ended with a draw (tie). Remi can be achieved in several situations, including draw by agreement, stalemate, threefold repetition of position pednadeset chassis rule, due to the inability to draw mat (usually because of a shortage of material to checkmate) or when the timeout, but only enemy king.

Strategy in chess is involved in the evaluation of chess positions and setting the objectives and long-term plans for future games. During the evaluation, players must take into account numerous factors such as the value of the pieces on the board, peshechnata structure, king safety, control of key fields or groups of fields (eg, diagonals, open horizontal and vertical lines, black or white fields ), etc.

The most basic step in evaluating a position is calculating the total figures of the two rival countries. [3] The values ​​used for this purpose are based on experience and the form of points, usually with pawns are nonzero, horses and officers have a value of three points, tops - the queen five points and a value of nine points. In the endgame the king is in most cases stronger than the officer or the horse, but is weaker than the cannon. Therefore, the king is sometimes awarded worth four points. Subsequently, these core values ​​are changing under the influence of other factors such as position of the figure (eg, pawns on the front line have greater value than the output position), coordination between pieces (for example, a pair of officers have better coordination among themselves the pair officer and horse) or the type of position (horses are more valuable in closed positions with many pawns while the officers are more powerful in open positions).

Another important factor in evaluating a chess position is peshechnata structure (sometimes known as the backbone of pawns) or the configuration of pawns on the board. Pawns are the least mobile chess. Therefore peshechnata structure is relatively static, but also largely determines the strategic nature of the position. Weaknesses in peshechnata structure, such as isolated as paired or backward pawns and holes, once created, usually remain constant. Because this should be avoided unless their appearance is not compensated by another valuable asset (for example, the possibility of developing an attack).

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