【正文】
Chinese chessboard has two special territories. One is the Palace. The Kings and Advisors can move only within their Palace. The other is the River. Elephants cannot cross the River. These constraints seem to reduce the plexity of Chinese chess, since these pieces at first may appear not to be able to threaten pieces on the other side of the River, but this is a fallacy. These pieces can, in fact, directly threaten the other side’s pieces by being a Cannons mount and by the special rule that Kings should avoid seeing each other face to face. 3. Cannons are very special pieces. Cannons move like Rooks but have to jump over piece to capture it. Thus, any piece cooperating with Cannons will have the same power as a Rook. Western chess has no similar piece. 4. Although Kings cannot leave the Palace, Chinese chess has a special rule that allows them to threaten their counterparts: Kings may not see each other face to face. Based on this rule, Kings sometimes have a power similar to that of Rooks, which is very useful in the endgame stage. 5. Blocking rules apply to Elephants and Horses. Western chess has no similar rule. 6. Pawns move one space at a time. When a Pawn reaches the opposite bottom line, it cannot be turned into another piece as it can be in Western chess. 7. Repetitive situations are relatively simple in Western chess. In Chinese chess, however, because of the larger board and the characteristics of certain pieces, repeating situations in which neither side wants to make a concession, is more likely to arise. Special rules are required to govern these situations. In some extreme situations, a referee must make a judgement. Therefore, resolving repeating situations is a challenge in puter Chinese chess. Quiescen