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

EGTB: win in 4 half-moves

# move score
1 Kab6 win in 3 half-moves
2 Kb5 win in 3 half-moves
3 Rc8 win in 3 half-moves
4 Ka5 win in 7 half-moves
5 Kaa7 win in 7 half-moves
6 Kba7 win in 7 half-moves
7 Rb8 win in 7 half-moves
8 Rg8 win in 9 half-moves
9 Rh8 win in 9 half-moves
10 Kc7 win in 17 half-moves
11 Kb8 draw
12 Kbb6 draw
13 Kc8 draw
14 Ra7 draw
15 Kc6 loss in 2 half-moves
16 Rd8 loss in 2 half-moves
17 Re8 loss in 2 half-moves
18 Rf8 loss in 2 half-moves