Games played by Sergey Volkov (Rybinsk, Russia) in this fuseki

2
15
3
4
4bw
+21
=  
-1 
?  

1Piddubny Konstantin - Volkov Sergey
2Volkov Sergey - Poghosyan Albert
3Volkov Sergey - Karasyov Maxim
4Volkov Sergey - Yu Jingping