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

EGTB: win in 4 half-moves

# move score
1 Kc2 win in 3 half-moves
2 Kd2 win in 3 half-moves
3 Kb1 win in 15 half-moves
4 Kb2 win in 15 half-moves
5 Kb3 win in 15 half-moves
6 Ka3 draw
7 Kc1 draw
8 Ke1 draw
9 Ke2 draw
10 Rb1 loss in 2 half-moves
11 Rc1 loss in 2 half-moves