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 Kb7 win in 3 half-moves
3 Rb5 win in 9 half-moves
4 K5b6 draw
5 K5c6 draw
6 K5d6 draw
7 K7b6 draw
8 K7c6 draw
9 K7d6 draw
10 Kb8 draw
11 Kc8 draw
12 Kd5 draw
13 Kd7 draw
14 Kd8 draw
15 Ra6 draw
16 Ra7 draw
17 Kb4 loss in 2 half-moves
18 Kc4 loss in 2 half-moves
19 Kd4 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 Ra4 loss in 2 half-moves
24 Ra8 loss in 2 half-moves