Games lost by Ryusuke Tanizaki (Kanagawa, Japan) as black in this fuseki

3
24
15
6bw
+2 
=  
-31
?  

1Tanizaki Ryusuke - Qiu Yunfei
2Tanizaki Ryusuke - Tanji Hiroki
3Tanizaki Ryusuke - Maruta Hiroki