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 Ka4 draw
3 Kb4 draw
4 Kb6 draw
5 Kf3 draw
6 Kf4 draw
7 Kg3 draw
8 Kh3 draw
9 Kh4 draw
10 Rb6 draw
11 Rc6 draw
12 Rd6 draw
13 Re6 draw
14 Kf5 loss in 2 half-moves
15 Kg5 loss in 2 half-moves
16 Kh5 loss in 2 half-moves
17 Ra7 loss in 2 half-moves
18 Ra8 loss in 2 half-moves
19 Rf6 loss in 2 half-moves
20 Rg6 loss in 2 half-moves
21 Rh6 loss in 2 half-moves