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 Kb1 draw
3 Kc1 draw
4 Kc3 draw
5 Kd2 draw
6 Kd3 draw
7 Rb1 draw
8 Rb3 draw
9 Kb3 loss in 6 half-moves
10 Kd1 loss in 4 half-moves
11 Ra2 loss in 4 half-moves
12 Rb4 loss in 2 half-moves
13 Rb5 loss in 2 half-moves
14 Rb6 loss in 2 half-moves
15 Rb7 loss in 2 half-moves