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 Kb6 win in 3 half-moves
3 Kb7 win in 3 half-moves
4 Kc4 win in 3 half-moves
5 Ra4 win in 3 half-moves
6 Ra6 win in 3 half-moves
7 Rb3 win in 3 half-moves
8 Rc3 win in 3 half-moves
9 Rd3 win in 3 half-moves
10 Kd4 win in 5 half-moves
11 Ra5 win in 5 half-moves
12 Ra8 win in 5 half-moves
13 Kb5 win in 9 half-moves
14 Kb8 win in 9 half-moves
15 Kc6 win in 9 half-moves
16 Kc7 win in 9 half-moves
17 Kd5 win in 9 half-moves
18 Kd6 win in 9 half-moves
19 Kd7 win in 9 half-moves
20 Ra1 win in 9 half-moves
21 Kd8 win in 13 half-moves
22 Ra2 draw
23 Re3 draw
24 Rf3 draw
25 Ra7 loss in 2 half-moves
26 Rg3 loss in 2 half-moves
27 Rh3 loss in 2 half-moves