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 Ka2 draw
3 Ka4 draw
4 Kb2 draw
5 Kb3 draw
6 Ke7 draw
7 Kf5 draw
8 Kf7 draw
9 Ra6 draw
10 Rb6 draw
11 Rc6 draw
12 Rd5 draw
13 Rd7 draw
14 Rd8 draw
15 Kd5 loss in 2 half-moves
16 Kd7 loss in 2 half-moves
17 Ke5 loss in 2 half-moves
18 Rd1 loss in 2 half-moves
19 Rd2 loss in 2 half-moves
20 Rd3 loss in 2 half-moves
21 Rd4 loss in 2 half-moves
22 Kf6 loss in 1 half-moves