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

Book: ∞ / 0

# move proof disproof
1 Rd7 0
2 Rc7 0
3 Ra8 0
4 Rb7 0
5 Nc7 0
6 g4 0
7 Bh6 0
8 Nb4 0
9 Nf6 0
10 Bg7 0
11 c4 0
12 Rg8 0
13 Nb8 0