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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Kb6 win in 3 half-moves
3 Ra3 win in 3 half-moves
4 Rb6 win in 5 half-moves
5 Ra4 win in 7 half-moves
6 Ra5 win in 7 half-moves
7 K4b5 draw
8 K4c5 draw
9 Kb3 draw
10 Kc3 draw
11 Kd3 draw
12 Ra1 draw
13 Ra2 draw
14 K4d5 loss in 2 half-moves
15 K6b5 loss in 2 half-moves
16 K6c5 loss in 2 half-moves
17 K6d5 loss in 2 half-moves
18 Kb7 loss in 2 half-moves
19 Kc7 loss in 2 half-moves
20 Kd4 loss in 2 half-moves
21 Kd6 loss in 2 half-moves
22 Kd7 loss in 2 half-moves
23 Ra7 loss in 2 half-moves
24 Ra8 loss in 2 half-moves