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 Ka6 draw
3 Ka8 draw
4 Kb7 draw
5 Kb8 draw
6 Kc3 draw
7 Kc5 draw
8 Kd3 draw
9 Kd5 draw
10 Ke3 draw
11 Ra4 draw
12 Rb4 draw
13 Rc1 draw
14 Rc2 draw
15 Rc3 draw
16 Rc8 draw
17 Ke4 loss in 2 half-moves
18 Ke5 loss in 2 half-moves
19 Rc5 loss in 2 half-moves
20 Rc6 loss in 2 half-moves
21 Rc7 loss in 2 half-moves