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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Ka5 draw
3 Ka7 draw
4 Kc1 draw
5 Kc2 draw
6 Kd2 draw
7 Ke1 draw
8 Ke2 draw
9 Ra7 draw
10 Rc8 draw
11 Kb6 loss in 2 half-moves
12 Kb7 loss in 2 half-moves
13 Rb8 loss in 2 half-moves
14 Rd8 loss in 2 half-moves
15 Re8 loss in 2 half-moves
16 Rf8 loss in 2 half-moves
17 Rg8 loss in 2 half-moves
18 Rh8 loss in 2 half-moves