Han Chen (China, Heilongjiang) prefer positions after 5 moves

All years
4
2
1
53
2bw
+1 
=  
-1 
?  
542
1
3
1bw
+  
=  
-1 
?  
2
1
4
53
1bw
+  
=  
- 1
?  
2
1
3
45
1bw
+  
=  
- 1
?