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 Rb6 win in 3 half-moves
3 Kd7 win in 5 half-moves
4 Ka5 draw
5 Ka7 draw
6 Kb7 draw
7 Kc8 draw
8 Ke7 draw
9 Ke8 draw
10 Ra8 draw
11 Rb1 draw
12 Rb2 draw
13 Rb7 draw
14 Kb5 loss in 2 half-moves
15 Kb6 loss in 2 half-moves
16 Rb3 loss in 2 half-moves
17 Rb4 loss in 2 half-moves
18 Rb5 loss in 2 half-moves
19 Rc8 loss in 2 half-moves