Patent US 6,446,969

A game board has a central playing field, called the territories, surrounded by a peripheral or perimeter playing field called the sacrifice zone. The board comprises 90 squares arranged in ten columns and nine rows. The squares form an ordered array of cells or positions for playing pieces, through which rectangular array vertical, horizontal and diagonal moves are possible. The thirty-four perimeter squares comprise a sacrifice zone that is one square wide, namely, the first and last columns and the top and bottom rows. The remaining fifty-six inner squares comprise the territories. Two sets of fourteen playing pieces of three types are assigned to the two players, each type of piece being allowed moves and captures according to individual rules. Special rules apply to pieces entering and occupying the sacrifice zone squares. Each piece is reversible—that is, one side of the piece bears on its top side indicia of the first player's set and on the obverse side indicia of the second player's set. Upon capture, an opponent's piece is physically reversed. The obverse side is turned up, which displays the primary indicia of the capturing player.