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 Kb6 draw
3 Kb7 draw
4 Kc2 draw
5 Kc5 draw
6 Kc7 draw
7 Kd2 draw
8 Kd5 draw
9 Kd6 draw
10 Kd7 draw
11 Ra1 draw
12 Rb1 draw
13 Ke1 loss in 2 half-moves
14 Ke2 loss in 2 half-moves
15 Rc2 loss in 2 half-moves
16 Rc3 loss in 2 half-moves
17 Rc4 loss in 2 half-moves
18 Rc5 loss in 2 half-moves