Games lost by Ilya Katsev (Saint Petersburg, Russia) as black in this fuseki

425
1
3
33bw
+88
=12
-410
?  

1Katsev Ilya - Olumets Erko
2Katsev Ilya - Salnikova Nonna
3Katsev Ilya - Kolk Kuno
4Katsev Ilya - Skuridin Alexey