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

EGTB: win in 2 half-moves

# move score
1 Rb1 win in 1 half-moves
2 Kb2 draw
3 Kc2 draw
4 Kd2 draw
5 Ra3 draw
6 Rb2 draw
7 Rb4 draw
8 Rb6 draw
9 Rb7 draw
10 Rb8 draw
11 Kb4 loss in 2 half-moves
12 Kc4 loss in 2 half-moves
13 Kd3 loss in 2 half-moves
14 Kd4 loss in 2 half-moves
15 Rb5 loss in 2 half-moves