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

EGTB: win in 4 half-moves

# move score
1 Kc5 win in 3 half-moves
2 Ra3 win in 3 half-moves
3 Ka4 draw
4 Ka5 draw
5 Ka6 draw
6 Kb6 draw
7 Kbb4 draw
8 Kbc4 draw
9 Kc6 draw
10 Kb2 loss in 2 half-moves
11 Kc2 loss in 2 half-moves
12 Kcb4 loss in 2 half-moves
13 Kcc4 loss in 2 half-moves
14 Kd2 loss in 2 half-moves
15 Kd3 loss in 2 half-moves
16 Kd4 loss in 2 half-moves
17 Rb1 loss in 2 half-moves
18 Rb2 loss in 2 half-moves
19 Rb4 loss in 2 half-moves