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

EGTB: win in 4 half-moves

# move score
1 Kb2 win in 3 half-moves
2 Kb4 win in 3 half-moves
3 Kc2 win in 3 half-moves
4 Kcc4 win in 3 half-moves
5 Kcd4 win in 3 half-moves
6 Kd2 win in 3 half-moves
7 Rb2 win in 3 half-moves
8 Rb4 win in 3 half-moves
9 Kc5 win in 5 half-moves
10 Kdc4 win in 5 half-moves
11 Kdd4 win in 5 half-moves
12 Ke4 win in 7 half-moves
13 Ke5 win in 9 half-moves
14 Rb1 win in 9 half-moves
15 Kd3 draw
16 Ra3 draw
17 Rb5 draw
18 Kc6 loss in 2 half-moves
19 Kd6 loss in 2 half-moves
20 Ke6 loss in 2 half-moves
21 Rb6 loss in 2 half-moves
22 Rb7 loss in 2 half-moves
23 Rb8 loss in 2 half-moves