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

EGTB: win in 4 half-moves

# move score
1 Kb7 win in 3 half-moves
2 Kcc7 win in 3 half-moves
3 Kcd7 win in 3 half-moves
4 Rb7 win in 3 half-moves
5 Ke7 win in 5 half-moves
6 Kc5 win in 7 half-moves
7 Kc6 win in 13 half-moves
8 Kdc7 win in 13 half-moves
9 Kd5 draw
10 Kd8 draw
11 Kdd7 draw
12 Ke6 draw
13 Ra8 draw
14 Rb4 draw
15 Rb5 draw
16 Rb6 draw
17 Ke5 loss in 2 half-moves
18 Rb1 loss in 2 half-moves
19 Rb2 loss in 2 half-moves
20 Rb3 loss in 2 half-moves