8
7
6
5
4
3
2
a1
b
c
d
e
f
g
h
Step 1 / 2
Black's whole plan is ...b5, gaining queenside space and activating the pieces. Don't let it happen: a4 nails the b5 square down for good. Prevention before ambition.
Step 1 / 2
Black's whole plan is ...b5, gaining queenside space and activating the pieces. Don't let it happen: a4 nails the b5 square down for good. Prevention before ambition.