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

EGTB: win in 4 half-moves

# move score
1 Kcc1 win in 3 half-moves
2 Kd1 win in 3 half-moves
3 Kd2 win in 5 half-moves
4 Ka1 win in 7 half-moves
5 Kbb2 win in 7 half-moves
6 Kcb2 win in 7 half-moves
7 Ra1 win in 7 half-moves
8 Kbc1 draw
9 Ra7 draw
10 Ra8 draw
11 Rb2 draw
12 Kb3 loss in 2 half-moves
13 Kc3 loss in 2 half-moves
14 Kd3 loss in 2 half-moves
15 Ra3 loss in 2 half-moves
16 Ra4 loss in 2 half-moves
17 Ra5 loss in 2 half-moves
18 Ra6 loss in 2 half-moves