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 Kc3 win in 3 half-moves
4 Rb8 win in 5 half-moves
5 Kc7 win in 7 half-moves
6 Kd7 draw
7 Kd8 draw
8 Ra3 draw
9 Rb1 draw
10 Rb2 draw
11 Rb6 draw
12 Rb7 draw
13 Rc3 draw
14 Kc2 loss in 2 half-moves
15 Kc4 loss in 2 half-moves
16 Kd2 loss in 2 half-moves
17 Kd4 loss in 2 half-moves
18 Ke2 loss in 2 half-moves
19 Ke3 loss in 2 half-moves
20 Ke4 loss in 2 half-moves
21 Rb4 loss in 2 half-moves
22 Rb5 loss in 2 half-moves