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

EGTB: win in 4 half-moves

# move score
1 Kb2 win in 3 half-moves
2 Rb4 win in 3 half-moves
3 Kb4 win in 7 half-moves
4 Kc2 win in 7 half-moves
5 Kd2 win in 7 half-moves
6 Kd4 win in 7 half-moves
7 Ra1 win in 7 half-moves
8 Kb1 win in 9 half-moves
9 Kd1 win in 9 half-moves
10 Ra7 draw
11 Kb3 loss in 2 half-moves
12 Kb5 loss in 2 half-moves
13 Kc3 loss in 2 half-moves
14 Kc5 loss in 2 half-moves
15 Kd3 loss in 2 half-moves
16 Kd5 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 Ra8 loss in 2 half-moves