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

EGTB: win in 4 half-moves

# move score
1 Ka7 win in 3 half-moves
2 Ra3 draw
3 Ra4 draw
4 Ra5 draw
5 Kb7 loss in 2 half-moves
6 Kbc7 loss in 2 half-moves
7 Kbc8 loss in 2 half-moves
8 Kc6 loss in 2 half-moves
9 Kd6 loss in 2 half-moves
10 Kd8 loss in 2 half-moves
11 Kdc7 loss in 2 half-moves
12 Kdc8 loss in 2 half-moves
13 Ke6 loss in 2 half-moves
14 Ke7 loss in 2 half-moves
15 Ke8 loss in 2 half-moves
16 Ra1 loss in 2 half-moves
17 Ra2 loss in 2 half-moves
18 Ra6 loss in 2 half-moves
19 Ra7 loss in 2 half-moves