Games played by Konstantin Nikonov (Elektrostal, Russia) as black in this fuseki

5
43
2
1
12bw
+43
= 1
-4 
?  

1Nikonov Konstantin - Biryukov Mikhail
2Nikonov Konstantin - Brusnikin Alexander
3Nikonov Konstantin - Mikhailov Alexander
4Nikonov Konstantin - Azov Dmitriy
5Nikonov Konstantin - Ermakov Vladimir
6Nikonov Konstantin - Bashirov Rustam
7Nikonov Konstantin - Gluhovsky Leonid
8Nikonov Konstantin - Bobkov Evgeniy