Kai Zhao (China, Shanghai) prefer positions after 5 moves

All years
3
24
15
2bw
+2 
=  
-  
?  
2
15
4
3
2bw
+  
=  
-2 
?  
42
51
3
2bw
+1 
=  
-1 
?  
425
1
3
1bw
+  
=  
- 1
?  
4
52
1
3
1bw
+  
=1 
-  
?