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

EGTB: win in 4 half-moves

# move score
1 Ka5 win in 3 half-moves
2 Ka6 win in 3 half-moves
3 Ka7 win in 3 half-moves
4 Kb5 win in 3 half-moves
5 Kb7 win in 3 half-moves
6 Ke6 win in 3 half-moves
7 Kbc5 draw
8 Kbc7 draw
9 Rc4 draw
10 Kd5 loss in 2 half-moves
11 Kd7 loss in 2 half-moves
12 Kdc5 loss in 2 half-moves
13 Kdc7 loss in 2 half-moves
14 Ke5 loss in 2 half-moves
15 Ke7 loss in 2 half-moves
16 Rc1 loss in 2 half-moves
17 Rc2 loss in 2 half-moves
18 Rc3 loss in 2 half-moves
19 Rc5 loss in 2 half-moves
20 Rc7 loss in 2 half-moves
21 Rc8 loss in 2 half-moves