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

EGTB: win in 4 half-moves

# move score
1 Kc7 win in 3 half-moves
2 Kdd7 win in 3 half-moves
3 Kc8 win in 7 half-moves
4 Kde8 draw
5 Ked7 draw
6 Kee8 draw
7 Kf8 draw
8 Ra8 draw
9 Rb1 draw
10 Rb2 draw
11 Rb7 draw
12 Rc8 draw
13 Kd6 loss in 2 half-moves
14 Ke6 loss in 2 half-moves
15 Kf6 loss in 2 half-moves
16 Kf7 loss in 2 half-moves
17 Rb3 loss in 2 half-moves
18 Rb4 loss in 2 half-moves
19 Rb5 loss in 2 half-moves
20 Rb6 loss in 2 half-moves