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

EGTB: win in 6 half-moves

# move score
1 Kb3 win in 5 half-moves
2 Rb1 win in 5 half-moves
3 Kb1 win in 9 half-moves
4 Kb5 win in 9 half-moves
5 Kb4 win in 11 half-moves
6 Kc5 win in 13 half-moves
7 Kc3 draw
8 Kd1 draw
9 Kd3 draw
10 Kd4 draw
11 Kd5 draw
12 Ra4 draw
13 Kb2 loss in 2 half-moves
14 Kc2 loss in 2 half-moves
15 Kd2 loss in 2 half-moves
16 Ra2 loss in 2 half-moves
17 Ra3 loss in 2 half-moves
18 Ra5 loss in 2 half-moves
19 Ra6 loss in 2 half-moves
20 Ra7 loss in 2 half-moves
21 Ra8 loss in 2 half-moves