Games played by Yusui Yamaguchi (Tokyo, Japan) in this fuseki

5
23
1
4
4bw
+ 4
=  
-  
?  

1Tamura Kazumasa - Yamaguchi Yusui
2Nakayama Tomoharu - Yamaguchi Yusui
3Okabe Hiroshi - Yamaguchi Yusui
4Nakayama Tomoharu - Yamaguchi Yusui