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 Rb1 win in 3 half-moves
5 Ra4 win in 5 half-moves
6 Kd4 win in 9 half-moves
7 Ka4 draw
8 Ka6 draw
9 Kd3 draw
10 Kd5 draw
11 Ke3 draw
12 Ke5 draw
13 Rc1 draw
14 Rd1 draw
15 Re1 draw
16 Kf3 loss in 2 half-moves
17 Kf4 loss in 2 half-moves
18 Kf5 loss in 2 half-moves
19 Ra2 loss in 2 half-moves
20 Ra3 loss in 2 half-moves
21 Rf1 loss in 2 half-moves
22 Rg1 loss in 2 half-moves
23 Rh1 loss in 2 half-moves