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

EGTB: win in 2 half-moves

# move score
1 Rb7 win in 1 half-moves
2 Rb8 win in 1 half-moves
3 Kb4 draw
4 Kb6 draw
5 Kc6 draw
6 Kd5 draw
7 Kd6 draw
8 Rb4 draw
9 Rb6 draw
10 Kc4 loss in 2 half-moves
11 Kd4 loss in 2 half-moves
12 Ra5 loss in 2 half-moves
13 Rb1 loss in 2 half-moves
14 Rb2 loss in 2 half-moves
15 Rb3 loss in 2 half-moves