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 Kc3 win in 5 half-moves
3 Kd4 win in 5 half-moves
4 Rc1 win in 7 half-moves
5 Re1 win in 7 half-moves
6 Kc2 draw
7 Kd2 draw
8 Ke2 draw
9 Ke3 draw
10 Ke4 draw
11 Rd2 draw
12 Ra1 loss in 2 half-moves
13 Rb1 loss in 2 half-moves
14 Rf1 loss in 2 half-moves
15 Rg1 loss in 2 half-moves
16 Rh1 loss in 2 half-moves