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

EGTB: win in 4 half-moves

# move score
1 Kb1 win in 3 half-moves
2 Kb3 win in 3 half-moves
3 Ra4 win in 9 half-moves
4 Kb5 win in 11 half-moves
5 Ka3 draw
6 Ka4 draw
7 Ka5 draw
8 Kc3 draw
9 Kc4 draw
10 Kc5 draw
11 Ra8 draw
12 Rb1 loss in 4 half-moves
13 Kb2 loss in 2 half-moves
14 Kc2 loss in 2 half-moves
15 Kd1 loss in 2 half-moves
16 Kd2 loss in 2 half-moves
17 Ra2 loss in 2 half-moves
18 Ra3 loss in 2 half-moves
19 Ra5 loss in 2 half-moves
20 Ra6 loss in 2 half-moves
21 Ra7 loss in 2 half-moves