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

EGTB: win in 2 half-moves

# move score
1 Ra8 win in 1 half-moves
2 Kb7 draw
3 Kc6 draw
4 Kd7 draw
5 Ra1 draw
6 Ra3 draw
7 Ra4 draw
8 Ra5 draw
9 Ra6 draw
10 Rb7 draw
11 Kb6 loss in 2 half-moves
12 Kd6 loss in 2 half-moves
13 Ra2 loss in 2 half-moves
14 Kb8 loss in 1 half-moves
15 Kc8 loss in 1 half-moves
16 Kd8 loss in 1 half-moves