1
2
3
4
5
6
7
h8
g
f
e
d
c
b
a
1…d5 2.c4 d4: hold the d4 square
1.Nf3 d5 2.c4 d4: 13 games, 35%. The engine finds the position equal. What costs you is what you do with your d4 pawn.
Recap: after 1…g5 2.Nxg5 e5 3.Nf3 e4 4.Ng1 d5 5.d3, what do you play?