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 Kb6 win in 3 half-moves
4 Kc2 win in 3 half-moves
5 Kcd4 win in 3 half-moves
6 Kd2 win in 3 half-moves
7 Kd5 win in 3 half-moves
8 Kd6 win in 3 half-moves
9 Rb7 win in 3 half-moves
10 Kc6 win in 5 half-moves
11 Rc6 win in 5 half-moves
12 Kc3 draw
13 Kcc4 draw
14 Kdc4 draw
15 Kdd4 draw
16 Ke3 draw
17 Ke4 draw
18 Ra7 draw
19 Rc8 draw
20 Rd7 draw
21 Re7 draw
22 Rf7 draw
23 Ke2 loss in 2 half-moves
24 Rg7 loss in 2 half-moves
25 Rh7 loss in 2 half-moves