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 Kc2 win in 3 half-moves
3 Kc4 win in 5 half-moves
4 Ka5 draw
5 Ka7 draw
6 Kb6 draw
7 Kb7 draw
8 Kd2 draw
9 Kd4 draw
10 Ke2 draw
11 Ke3 draw
12 Ke4 draw
13 Ra3 draw
14 Rb3 draw
15 Rc1 draw
16 Rc2 draw
17 Rc4 draw
18 Rc8 draw
19 Rc5 loss in 2 half-moves
20 Rc6 loss in 2 half-moves
21 Rc7 loss in 2 half-moves