4 classic chess games

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This app includes four kind of classic chess games which are Checkers, Othello, Gomoku and Quod Chess. Checkers is played by two opponents, on opposite sides of the game board. One player has the dark pieces; the other has the light pieces. Players alternate turns. A player may not move an opponent's piece. A move consists of moving a piece diagonally to an adjacent unoccupied square. If the adjacent square contains an opponent's piece, and the square immediately beyond it is vacant, the piece may be captured (and removed from the game) by jumping over it. Only the dark squares of the checkered board are used. A piece may move only diagonally into an unoccupied square. Capturing is mandatory in most official rules, although some rule variations make capturing optional when presented. In almost all variants, the player without pieces remaining, or who cannot move due to being blocked, loses the game. Othello(Reversi) is a strategy board game for two players, played on an 8×8 uncheckered board. There are sixty-four identical game pieces called disks (often spelled "discs"), which are light on one side and dark on the other. Players take turns placing disks on the board with their assigned color facing up. During a play, any disks of the opponent's color that are in a straight line and bounded by the disk just placed and another disk of the current player's color are turned over to the current player's color. The object of the game is to have the majority of disks turned to display your color when the last playable empty square is filled. The player with the most pieces on the board at the end of the game wins. Gomoku is an abstract strategy board game. Also called Gobang or Five in a Row, it is traditionally played with Go pieces(black and white stones) on a go board. The rule is black plays first if white did not just win, and plays alternate in placing a stone of their color on an empty space. The winner is the first player to get an unbroken row of five stones horizontally, vertically, or diagonally. Quod Chess is an abstract strategy game played on an 11-by-11 grid of spaces with the four corner spaces removed. Players alternate placing pieces(blue and red), called quods, into empty spaces. A player wins by placing four quods that form the four corners of a square. The square can be any size and any orientation (in other words, the square can be "tilted").In addition, each player has a white number of pieces, called quasars, that are used purely for blocking. Quod was invented by G. Keith Stills in 1979, while he was at college, and was popularized by Scientific American in March 1996.