Games played since 2014 year by Jun Koyama (Tokyo, Japan) in this fuseki

4
2
1
35
5bw
+ 2
= 1
-2 
?  

1Ishitani Shin-ichi - Koyama Jun
2Iio Yoshihiro - Koyama Jun
3Koyama Jun - Okabe Hiroshi
4Kusajima Masato - Koyama Jun
5Koyama Jun - Okabe Hiroshi