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

EGTB: win in 4 half-moves

# move score
1 Kcb7 win in 3 half-moves
2 Kcc7 win in 3 half-moves
3 Kd7 win in 3 half-moves
4 Rb7 win in 3 half-moves
5 Ra6 win in 5 half-moves
6 Kbc7 win in 11 half-moves
7 Ka7 win in 13 half-moves
8 Ka8 draw
9 Kbb7 draw
10 Kc8 draw
11 Kd6 draw
12 Rb1 draw
13 Kb5 loss in 2 half-moves
14 Kc5 loss in 2 half-moves
15 Kd5 loss in 2 half-moves
16 Rb2 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