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 Kb6 win in 3 half-moves
3 Kb7 win in 3 half-moves
4 Kc4 win in 3 half-moves
5 Ka5 win in 7 half-moves
6 Kc3 win in 7 half-moves
7 Rb1 win in 11 half-moves
8 Rb2 win in 11 half-moves
9 Rb4 win in 11 half-moves
10 Ka7 draw
11 Kd3 draw
12 Ke3 draw
13 Ke4 draw
14 Ra3 draw
15 Rc3 draw
16 Rd3 draw
17 Rh3 draw
18 Kc5 loss in 2 half-moves
19 Kd5 loss in 2 half-moves
20 Ke5 loss in 2 half-moves
21 Rb5 loss in 2 half-moves
22 Rb6 loss in 2 half-moves
23 Rb7 loss in 2 half-moves
24 Rb8 loss in 2 half-moves
25 Re3 loss in 2 half-moves
26 Rf3 loss in 2 half-moves
27 Rg3 loss in 2 half-moves