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 Kd5 win in 3 half-moves
3 Kd4 win in 5 half-moves
4 Kd3 win in 11 half-moves
5 Rc3 win in 11 half-moves
6 Ka6 draw
7 Ka8 draw
8 Kb7 draw
9 Kb8 draw
10 Ke3 draw
11 Kf3 draw
12 Kf4 draw
13 Kf5 draw
14 Ra4 draw
15 Rb4 draw
16 Rc1 draw
17 Rc2 draw
18 Rc5 draw
19 Rc6 draw
20 Rd4 draw
21 Ke5 loss in 2 half-moves
22 Rc7 loss in 2 half-moves
23 Rc8 loss in 2 half-moves