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

EGTB: win in 2 half-moves

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