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

EGTB: win in 4 half-moves

# move score
1 Kb3 win in 3 half-moves
2 Kf1 win in 5 half-moves
3 Rf1 win in 5 half-moves
4 Ka3 draw
5 Ka4 draw
6 Ka5 draw
7 Kc3 draw
8 Kc4 draw
9 Kc5 draw
10 Kd1 draw
11 Kd2 draw
12 Ke2 draw
13 Kf2 draw
14 Rg2 draw
15 Rg3 draw
16 Rg4 draw
17 Rg5 draw
18 Rg6 draw
19 Rh1 draw
20 Kb5 loss in 2 half-moves
21 Rg7 loss in 2 half-moves
22 Rg8 loss in 2 half-moves