棋局

qí jú de biàn huà yǒu shí hòu shí fēn wēi miào

棋局的变化有时候十分微妙。

The changes in the game of chess are sometimes very subtle.

qí jú kù

棋局库

database of chessboard

sān wéi qí jú

三维棋局

three-dimensional chessboard