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

EGTB: win in 4 half-moves

# move score
1 Ka4 win in 3 half-moves
2 Ka5 win in 3 half-moves
3 Kb5 win in 5 half-moves
4 Kc5 win in 5 half-moves
5 Rb2 win in 5 half-moves
6 Ka3 win in 7 half-moves
7 Kbc4 draw
8 Ra3 draw
9 Rb1 draw
10 Kb2 loss in 2 half-moves
11 Kc2 loss in 2 half-moves
12 Kcc4 loss in 2 half-moves
13 Kd2 loss in 2 half-moves
14 Kd3 loss in 2 half-moves
15 Kd4 loss in 2 half-moves