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 Kcd4 win in 3 half-moves
4 Kd5 win in 3 half-moves
5 Kd6 win in 3 half-moves
6 Rb3 win in 3 half-moves
7 Kcc4 win in 7 half-moves
8 Ra3 win in 7 half-moves
9 Kb6 draw
10 Kc6 draw
11 Ke3 draw
12 Rc1 draw
13 Kc2 loss in 2 half-moves
14 Kd2 loss in 2 half-moves
15 Kdc4 loss in 2 half-moves
16 Kdd4 loss in 2 half-moves
17 Ke2 loss in 2 half-moves
18 Ke4 loss in 2 half-moves
19 Rc2 loss in 2 half-moves
20 Rc4 loss in 2 half-moves