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

EGTB: win in 4 half-moves

# move score
1 Kc4 win in 3 half-moves
2 Kc5 win in 3 half-moves
3 Rc8 win in 3 half-moves
4 Rb8 win in 5 half-moves
5 Ka2 draw
6 Ka4 draw
7 Kb2 draw
8 Kb3 draw
9 Kb4 draw
10 Kc6 draw
11 Kd4 draw
12 Kd6 draw
13 Ra8 draw
14 Ke4 loss in 2 half-moves
15 Ke5 loss in 2 half-moves
16 Ke6 loss in 2 half-moves
17 Rd6 loss in 2 half-moves
18 Rd7 loss in 2 half-moves
19 Re8 loss in 2 half-moves
20 Rf8 loss in 2 half-moves
21 Rg8 loss in 2 half-moves
22 Rh8 loss in 2 half-moves