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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Rb5 win in 3 half-moves
3 Kf5 win in 5 half-moves
4 Kcd5 draw
5 Kd3 draw
6 Ke3 draw
7 Ke5 draw
8 Ked4 draw
9 Ked5 draw
10 Ra4 draw
11 Ra8 draw
12 Kb4 loss in 2 half-moves
13 Kb6 loss in 2 half-moves
14 Kc4 loss in 2 half-moves
15 Kc6 loss in 2 half-moves
16 Kcd4 loss in 2 half-moves
17 Kd6 loss in 2 half-moves
18 Kf3 loss in 2 half-moves
19 Kf4 loss in 2 half-moves
20 Ra1 loss in 2 half-moves
21 Ra2 loss in 2 half-moves
22 Ra3 loss in 2 half-moves
23 Ra6 loss in 2 half-moves
24 Ra7 loss in 2 half-moves