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

EGTB: win in 4 half-moves

# move score
1 Kb6 win in 3 half-moves
2 Kb7 win in 3 half-moves
3 Ka6 draw
4 Ka8 draw
5 Kb8 draw
6 Kc4 draw
7 Kd4 draw
8 Ke2 draw
9 Ke4 draw
10 Ra3 draw
11 Rb3 draw
12 Rc4 draw
13 Kc2 loss in 2 half-moves
14 Kd2 loss in 2 half-moves
15 Ke3 loss in 2 half-moves
16 Rc1 loss in 2 half-moves
17 Rc2 loss in 2 half-moves
18 Rc5 loss in 2 half-moves
19 Rc6 loss in 2 half-moves
20 Rc7 loss in 2 half-moves
21 Rc8 loss in 2 half-moves