Sheng-Heng Yeh (Chinese Taipei, Taichung) prefer positions after 5 moves

All years
53
24
1
2bw
+1 
=  
-1 
?  
2
13
54
1bw
+  
=  
- 1
?  
5
2
13
4
1bw
+  
=  
- 1
?