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

EGTB: win in 4 half-moves

# move score
1 Ka4 win in 3 half-moves
2 Ka6 win in 3 half-moves
3 Kb6 win in 3 half-moves
4 Ra6 win in 3 half-moves
5 Kc5 draw
6 Ra7 draw
7 Ra8 draw
8 Kb4 loss in 2 half-moves
9 Kc4 loss in 2 half-moves
10 Kc6 loss in 2 half-moves
11 Ra1 loss in 2 half-moves
12 Ra2 loss in 2 half-moves
13 Ra3 loss in 2 half-moves
14 Ra4 loss in 2 half-moves