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 Ka4 draw
3 Ka6 draw
4 Kd1 draw
5 Kd2 draw
6 Kd3 draw
7 Ke1 draw
8 Ke3 draw
9 Kf1 draw
10 Ra3 draw
11 Rb3 draw
12 Rf1 draw
13 Rf2 draw
14 Rf4 draw
15 Rf5 draw
16 Rg3 draw
17 Rh3 draw
18 Kb5 loss in 2 half-moves
19 Kb6 loss in 2 half-moves
20 Kf2 loss in 2 half-moves
21 Rc3 loss in 2 half-moves
22 Rd3 loss in 2 half-moves
23 Re3 loss in 2 half-moves
24 Rf6 loss in 2 half-moves
25 Rf7 loss in 2 half-moves
26 Rf8 loss in 2 half-moves