Literature Reference: 宫棋布局不依经，黑白分明子数停。—— 《夜看美人宫棋》 The palace chess is arranged without following the rules, with black and white pieces clearly separated and the count of pieces halted. Source from 'Night View of Palace Chess by a Beauty'.
宫: The palace, a symbol of the imperial court. In names, it holds no literal significance.
棋: Playing the qin and engaging in chess.
Meaning: Palace chess symbolizes wisdom and strategy, arranged unconventionally with clear distinctions between black and white, representing unique thinking and clear judgment.