Games played since 2014 year by Shuang Cao (Chongqing, China) in this fuseki

5
42
1
3
4bw
+1 
=  
-21
?  

1Cao Shuang - Ma Chenzhi
2Cao Shuang - Jing Zhe
3Cao Shuang - Huang Junming
4He Shirui - Cao Shuang