Games played by Taizan Isobe (Omiya, Japan) in this fuseki

43
2
15
4bw
+2 
=1 
-1 
?  

1Isobe Taizan - Oosumi Yuuki
2Isobe Taizan - Tada Ayako
3Isobe Taizan - Oosumi Yuuki
4Isobe Taizan - Kubo Izumi