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

EGTB: win in 4 half-moves

# move score
1 Kc3 win in 3 half-moves
2 Ka3 win in 5 half-moves
3 Ka4 win in 5 half-moves
4 Kd5 win in 5 half-moves
5 Ka5 draw
6 Kb3 draw
7 Kbc4 draw
8 Ra5 draw
9 Rb7 draw
10 Rb8 draw
11 Kb6 loss in 2 half-moves
12 Kc6 loss in 2 half-moves
13 Kcc4 loss in 2 half-moves
14 Kd4 loss in 2 half-moves
15 Kd6 loss in 2 half-moves
16 Rb6 loss in 2 half-moves