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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Kc4 win in 7 half-moves
3 Kc2 win in 9 half-moves
4 Kd2 win in 9 half-moves
5 Rc2 win in 9 half-moves
6 Kb1 draw
7 Kb2 draw
8 Kb5 draw
9 Kb6 draw
10 Kc6 draw
11 Kd1 draw
12 Ra3 draw
13 Rb3 draw
14 Rh3 draw
15 Kd4 loss in 2 half-moves
16 Kd5 loss in 2 half-moves
17 Kd6 loss in 2 half-moves
18 Rc4 loss in 2 half-moves
19 Rd3 loss in 2 half-moves
20 Re3 loss in 2 half-moves
21 Rf3 loss in 2 half-moves
22 Rg3 loss in 2 half-moves