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 Rb2 win in 3 half-moves
3 Ka5 win in 7 half-moves
4 Kb3 win in 7 half-moves
5 Kb6 win in 7 half-moves
6 Rc2 win in 7 half-moves
7 Ka7 draw
8 Kb2 draw
9 Kb4 draw
10 Kb7 draw
11 Kc2 draw
12 Kc4 draw
13 Kd2 draw
14 Kd3 draw
15 Ra1 draw
16 Ra3 draw
17 Ra4 draw
18 Rd2 draw
19 Rh2 draw
20 Kd4 loss in 2 half-moves
21 Ra5 loss in 2 half-moves
22 Re2 loss in 2 half-moves
23 Rf2 loss in 2 half-moves
24 Rg2 loss in 2 half-moves