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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Kb5 win in 3 half-moves
3 Ka5 win in 9 half-moves
4 Ra7 win in 15 half-moves
5 Ka3 draw
6 Kb3 draw
7 Kc8 draw
8 Kd8 draw
9 Ke6 draw
10 Ke7 draw
11 Ke8 draw
12 Rb7 draw
13 Rc8 draw
14 Kc6 loss in 2 half-moves
15 Kd6 loss in 2 half-moves
16 Rc1 loss in 2 half-moves
17 Rc2 loss in 2 half-moves
18 Rc3 loss in 2 half-moves
19 Rc4 loss in 2 half-moves
20 Rc5 loss in 2 half-moves
21 Rc6 loss in 2 half-moves