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

EGTB: win in 2 half-moves

# move score
1 Rb3 win in 1 half-moves
2 Kb1 draw
3 Kb2 draw
4 Kc2 draw
5 Kd1 draw
6 Kd2 draw
7 Ra7 draw
8 Rb1 draw
9 Rb2 draw
10 Rb4 draw
11 Rb5 draw
12 Rb6 draw
13 Kb6 loss in 2 half-moves
14 Kb8 loss in 2 half-moves
15 Kc6 loss in 2 half-moves
16 Kc8 loss in 2 half-moves
17 Kd6 loss in 2 half-moves
18 Kd7 loss in 2 half-moves
19 Kd8 loss in 2 half-moves
20 Rb8 loss in 2 half-moves