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

EGTB: win in 4 half-moves

# move score
1 Ka6 win in 3 half-moves
2 Kb6 win in 3 half-moves
3 Rb7 win in 9 half-moves
4 Kd7 win in 11 half-moves
5 Ra6 win in 13 half-moves
6 Ra8 win in 21 half-moves
7 Kd8 win in 25 half-moves
8 Ka4 draw
9 Kb4 draw
10 Kb5 draw
11 Ke7 draw
12 Kf7 draw
13 Kf8 draw
14 Rc7 draw
15 Rh7 draw
16 Rd7 loss in 2 half-moves
17 Re7 loss in 2 half-moves
18 Rf7 loss in 2 half-moves
19 Rg7 loss in 2 half-moves