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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Ra2 win in 3 half-moves
3 Rb2 win in 13 half-moves
4 Ka5 draw
5 Ka7 draw
6 Kb6 draw
7 Kb7 draw
8 Kd2 draw
9 Kd3 draw
10 Kd4 draw
11 Ke4 draw
12 Kf2 draw
13 Kf3 draw
14 Kf4 draw
15 Rc2 draw
16 Rd2 draw
17 Re1 draw
18 Rf2 loss in 2 half-moves
19 Rg2 loss in 2 half-moves
20 Rh2 loss in 2 half-moves