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

3
524
1
54bw
+1019
=35
-611
?  

1Nikonov Konstantin - Zaitsev Vyacheslav
2Nikonov Konstantin - Kamyshentsev Vasily
3Nikonov Konstantin - Volkov Sergey
4Nikonov Konstantin - Artemyev Sergey
5Nikonov Konstantin - Yin Licheng
6Nikonov Konstantin - Mikhailov Nikolay