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