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

EGTB: win in 4 half-moves

# move score
1 Kb8 win in 3 half-moves
2 Kd8 win in 3 half-moves
3 Rb8 win in 3 half-moves
4 Kc4 win in 5 half-moves
5 Kd7 win in 5 half-moves
6 Kb4 win in 7 half-moves
7 Kb5 win in 9 half-moves
8 K5b6 draw
9 K5c6 draw
10 K5d6 draw
11 K7b6 draw
12 K7c6 draw
13 K7d6 draw
14 Kc8 draw
15 Ra7 draw
16 Rb1 draw
17 Rb5 draw
18 Rb6 draw
19 Kd4 loss in 2 half-moves
20 Kd5 loss in 2 half-moves
21 Rb2 loss in 2 half-moves
22 Rb3 loss in 2 half-moves
23 Rb4 loss in 2 half-moves