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

EGTB: win in 2 half-moves

# move score
1 Rb7 win in 1 half-moves
2 Kc6 draw
3 Kc7 draw
4 Ke5 draw
5 Ke6 draw
6 Ke7 draw
7 Re7 draw
8 Rf7 draw
9 Rg7 draw
10 Rh7 draw
11 Rd8 loss in 4 half-moves
12 Kc5 loss in 2 half-moves
13 Kd5 loss in 2 half-moves
14 Ra7 loss in 2 half-moves
15 Rc7 loss in 2 half-moves