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

EGTB: win in 4 half-moves

# move score
1 Kb1 win in 3 half-moves
2 Kb2 win in 3 half-moves
3 Kc4 win in 3 half-moves
4 Kc5 win in 3 half-moves
5 Kc6 win in 3 half-moves
6 Rb2 win in 3 half-moves
7 Rc5 win in 3 half-moves
8 Rb1 win in 7 half-moves
9 Kc2 draw
10 Kd1 draw
11 Kd2 draw
12 Kd4 draw
13 Kd6 draw
14 Ke4 draw
15 Ra5 draw
16 Rb3 draw
17 Rb4 draw
18 Rb6 draw
19 Ke5 loss in 2 half-moves
20 Ke6 loss in 2 half-moves
21 Rb7 loss in 2 half-moves
22 Rb8 loss in 2 half-moves