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 Kd4 win in 3 half-moves
4 Rb3 win in 3 half-moves
5 Rd3 win in 3 half-moves
6 Kb2 win in 5 half-moves
7 Kc2 win in 5 half-moves
8 Kc4 win in 5 half-moves
9 Rc2 win in 5 half-moves
10 Kb1 draw
11 Kb6 draw
12 Kc6 draw
13 Kd1 draw
14 Kd2 draw
15 Kd5 draw
16 Ra3 draw
17 Re3 draw
18 Rf3 draw
19 Kd6 loss in 2 half-moves
20 Rc4 loss in 2 half-moves
21 Rg3 loss in 2 half-moves
22 Rh3 loss in 2 half-moves