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

3
524
1
4bw
+2 
=2 
-  
?  

1Oosumi Yuuki - Okabe Hiroshi
2Oosumi Yuuki - Yamaguchi Yusui
3Oosumi Yuuki - Okabe Hiroshi
4Oosumi Yuuki - Iio Yoshihiro