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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 e6 0
3 Nf6 0
4 Re8 0
5 Rg8 0
6 g6 0
7 Rh8 0
8 c6 0
9 g5 0
10 Ng5 0
11 c5 0
12 Rab8 0
13 a5 0
14 Nf8 0
15 h5 0
16 Rf8 0
17 Rcb8 0
18 Rd8 0