Games played by Yuuki Oosumi (Moriyama, Japan) in this fuseki

5
2
1
3
4
4bw
+11
=  
-11
?  

1Iio Yoshihiro - Oosumi Yuuki
2Sorokina Oksana - Oosumi Yuuki
3Oosumi Yuuki - Miyoshi Takeo
4Oosumi Yuuki - Ishitani Shin-ichi