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 win in 7 half-moves
3 Ka6 draw
4 Kb5 draw
5 Kb6 draw
6 Kc1 draw
7 Kc2 draw
8 Kc3 draw
9 Kd1 draw
10 Kd3 draw
11 Ra8 draw
12 Rb8 draw
13 Rc8 draw
14 Rd8 draw
15 Re1 draw
16 Re5 draw
17 Re6 draw
18 Re7 draw
19 Rf8 draw
20 Ke1 loss in 2 half-moves
21 Ke2 loss in 2 half-moves
22 Ke3 loss in 2 half-moves
23 Re2 loss in 2 half-moves
24 Re3 loss in 2 half-moves
25 Re4 loss in 2 half-moves
26 Rg8 loss in 2 half-moves
27 Rh8 loss in 2 half-moves