Games played by Sergey Filippov (Moscow, Russia) in this fuseki

2
15
4
3
4bw
+1 
=  
-21
?  

1Filippov Sergey - Kurkuchekov Leonid
2Bobkov Evgeniy - Filippov Sergey
3Filippov Sergey - Semyonov Vladimir
4Filippov Sergey - Krasnonosov Dmitry