Games played by Yan Kang (Jiangsu, China) in this fuseki

3
245
1
4bw
+ 1
=  
-3 
?  

1Kang Yan - Lyu Caichao
2Kang Yan - Zhu Xiangru
3Kang Yan - Luo Jinwei
4Du Ciyuan - Kang Yan