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

EGTB: win in 4 half-moves

# move score
1 Kb7 win in 3 half-moves
2 Kb8 win in 3 half-moves
3 Kd7 win in 3 half-moves
4 Kd8 win in 3 half-moves
5 Ra7 win in 3 half-moves
6 Rb7 win in 3 half-moves
7 Ka7 draw
8 Ke7 draw
9 Kf8 draw
10 Rc1 draw
11 Rc8 draw
12 Rd7 draw
13 Re7 draw
14 Rf7 draw
15 Kf7 loss in 2 half-moves
16 Rc2 loss in 2 half-moves
17 Rc3 loss in 2 half-moves
18 Rc4 loss in 2 half-moves
19 Rc5 loss in 2 half-moves
20 Rc6 loss in 2 half-moves
21 Rg7 loss in 2 half-moves
22 Rh7 loss in 2 half-moves