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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Kc6 win in 3 half-moves
3 Ka6 win in 5 half-moves
4 Kb6 win in 5 half-moves
5 Rb4 win in 5 half-moves
6 Kc7 draw
7 Kd7 draw
8 Ke6 draw
9 Ke7 draw
10 Rf4 draw
11 Rg4 draw
12 Rh4 draw
13 Kb4 loss in 2 half-moves
14 Kc5 loss in 2 half-moves
15 Kd5 loss in 2 half-moves
16 Ke5 loss in 2 half-moves
17 Ra1 loss in 2 half-moves
18 Ra2 loss in 2 half-moves
19 Ra3 loss in 2 half-moves
20 Rc4 loss in 2 half-moves
21 Rd4 loss in 2 half-moves
22 Re4 loss in 2 half-moves