Xiyou Chen (China, unknown) prefer positions after 5 moves

All years
452
1
3
1bw
+1 
=  
-  
?  
2
513
4
1bw
+  
=  
- 1
?  
43
2
51
1bw
+ 1
=  
-  
?  
2
15
4
3
1bw
+  
=  
-1 
?