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 Rb2 win in 3 half-moves
3 Ka3 win in 9 half-moves
4 Kd2 win in 9 half-moves
5 Ka5 win in 13 half-moves
6 Kd1 win in 15 half-moves
7 Kb5 win in 17 half-moves
8 Kab3 draw
9 Kb2 draw
10 Kb1 loss in 2 half-moves
11 Kc1 loss in 2 half-moves
12 Kc3 loss in 2 half-moves
13 Kcb3 loss in 2 half-moves
14 Kd3 loss in 2 half-moves
15 Ra1 loss in 2 half-moves
16 Ra3 loss in 2 half-moves