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

EGTB: win in 4 half-moves

# move score
1 Ra4 win in 3 half-moves
2 Ka2 draw
3 Ka4 draw
4 Kd5 draw
5 Kd6 draw
6 Ke6 draw
7 Kf5 draw
8 Kf6 draw
9 Ra6 draw
10 Ra7 draw
11 Ra8 draw
12 Kb2 loss in 2 half-moves
13 Kb3 loss in 2 half-moves
14 Kb4 loss in 2 half-moves
15 Kd4 loss in 2 half-moves
16 Ke4 loss in 2 half-moves
17 Kf4 loss in 2 half-moves
18 Rb5 loss in 2 half-moves
19 Rc5 loss in 2 half-moves
20 Rd5 loss in 2 half-moves