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 Kc5 win in 3 half-moves
3 Kd4 win in 3 half-moves
4 Rc8 win in 3 half-moves
5 Ka5 win in 5 half-moves
6 Ra8 win in 15 half-moves
7 Ka6 draw
8 Ka7 draw
9 Kb7 draw
10 Kc2 draw
11 Kc3 draw
12 Kc4 draw
13 Kc6 draw
14 Kc7 draw
15 Kd2 draw
16 Ke2 draw
17 Ke3 draw
18 Ke4 draw
19 Rb8 draw
20 Rd8 draw
21 Re1 draw
22 Rf8 draw
23 Re2 loss in 2 half-moves
24 Re3 loss in 2 half-moves
25 Re4 loss in 2 half-moves
26 Re5 loss in 2 half-moves
27 Re6 loss in 2 half-moves
28 Re7 loss in 2 half-moves
29 Rg8 loss in 2 half-moves
30 Rh8 loss in 2 half-moves