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

EGTB: win in 4 half-moves

# move score
1 Kb6 win in 3 half-moves
2 Ka4 draw
3 Ka5 draw
4 Ka6 draw
5 Kb4 draw
6 Kc6 draw
7 Kf8 draw
8 Ra8 draw
9 Rb8 draw
10 Rc8 draw
11 Rd1 draw
12 Rd7 draw
13 Kc4 loss in 2 half-moves
14 Kc5 loss in 2 half-moves
15 Kd7 loss in 2 half-moves
16 Ke7 loss in 2 half-moves
17 Kf7 loss in 2 half-moves
18 Rd2 loss in 2 half-moves
19 Rd3 loss in 2 half-moves
20 Rd4 loss in 2 half-moves
21 Rd5 loss in 2 half-moves
22 Rd6 loss in 2 half-moves