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

EGTB: win in 4 half-moves

# move score
1 Ka5 win in 3 half-moves
2 Ka6 win in 3 half-moves
3 Ka7 win in 3 half-moves
4 Kc5 win in 3 half-moves
5 Ra8 win in 3 half-moves
6 Kb5 win in 7 half-moves
7 Kd8 win in 7 half-moves
8 Kbb7 draw
9 Kbc7 draw
10 Kc6 draw
11 Kcb7 loss in 2 half-moves
12 Kcc7 loss in 2 half-moves
13 Kd7 loss in 2 half-moves
14 Rb7 loss in 2 half-moves