Click on the third or sixth rank to set the en passant target square.

Book: ∞ / 0

# move proof disproof
1 d4 0
2 Rc8 0
3 Nh7 0
4 Rb8 0
5 g5 0
6 g6 0
7 Rh8 0
8 Nd7 0
9 Ng6 0
10 a6 0
11 h4 0
12 Re8 0
13 a5 0
14 Rd8 0