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

EGTB: win in 2 half-moves

# move score
1 Kb4 win in 1 half-moves
2 Kc1 win in 15 half-moves
3 Ka2 draw
4 Ka4 draw
5 Ka6 draw
6 Kb2 draw
7 Kc2 draw
8 Ra2 draw
9 Ra3 draw
10 Ra4 draw
11 Kb5 loss in 2 half-moves
12 Kb6 loss in 2 half-moves