Xuyang Zheng (China, unknown) prefer positions after 5 moves

All years
425
1
3
1bw
+  
=  
- 1
?  
3
25
1
4
1bw
+ 1
=  
-  
?  
52
1
3
4
1bw
+1 
=  
-  
?  
4
2
1
53
1bw
+  
=  
- 1
?