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

3
5
2
1
4
4bw
+4 
=  
-  
?  

1Chernov Sergey - Ketov I.
2Chernov Sergey - Kuzin ?
3Chernov Sergey - Nikiforov Alexander
4Chernov Sergey - Loktev Sergey