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

EGTB: win in 2 half-moves

# move score
1 Ra1 win in 1 half-moves
2 Kb6 loss in 16 half-moves
3 Ra5 loss in 10 half-moves
4 Ra6 loss in 10 half-moves
5 Ra8 loss in 10 half-moves
6 Kc6 loss in 8 half-moves
7 Ka6 loss in 6 half-moves
8 Ka8 loss in 6 half-moves
9 Kb8 loss in 6 half-moves
10 Kc7 loss in 4 half-moves
11 Kc8 loss in 4 half-moves
12 Ra2 loss in 2 half-moves
13 Ra3 loss in 2 half-moves
14 Ra4 loss in 2 half-moves