我这个人生来就较愚蠢，至今仍不精通下棋，要不是暑假期间常带小孙子到公园“老战友俱乐部”看一群老头队下棋玩，小孙子对下象棋产生兴趣，我甚至连什么是“车走直，马走日。
B-Person O O O O O O O O O O B-Time I-Time O O O O O B-Thing O O O O B-Time I-Time I-Time I-Time O O B-Person I-Person I-Person O B-Location I-Location O B-Location I-Location I-Location I-Location I-Location I-Location O O O O B-Organization I-Organization I-Organization O B-Thing O O B-Person I-Person I-Person O O B-Thing I-Thing O O O O O B-Person O O O O O O O B-Thing O O O B-Thing O O O