Go problem

Xiufu played against Xiu Ce first, with six wins, three losses and one win. At the peak of Xiufu's career, Xiurong and Xian played ten sets of checkers, and the two sides were equally divided.

At the peak of Xiurong's career, Xiurong let Xianhe Xiuzai play ten games of checkers, but Xiurong still prevailed.

Therefore, judging from the chess power at that time, Xiufu >: Xiurong > Xiuzi, but later Xiurong and Xiuzi went further in chess power.

Xiufu is a gorgeous and ingenious chess style, which can make compact use of the role of chess pieces in attack and defense.

Xiurong is a flexible chess style.

Xiuzi is a simple and tenacious chess style.