Click on the third or sixth rank to set the en passant target square.

EGTB: win in 4 half-moves

# move score
1 Rf8 win in 3 half-moves
2 Kb3 win in 5 half-moves
3 Rb8 win in 5 half-moves
4 Kb2 win in 7 half-moves
5 Kc2 draw
6 Kcd2 draw
7 Kcd3 draw
8 Ke2 draw
9 Ked2 draw
10 Ked3 draw
11 Kf3 draw
12 Ra1 draw
13 Ra2 draw
14 Ra3 draw
15 Rg8 draw
16 Rh8 draw
17 Kb4 loss in 2 half-moves
18 Kc4 loss in 2 half-moves
19 Kcd4 loss in 2 half-moves
20 Ke4 loss in 2 half-moves
21 Ked4 loss in 2 half-moves
22 Kf2 loss in 2 half-moves
23 Kf4 loss in 2 half-moves
24 Ra4 loss in 2 half-moves
25 Ra5 loss in 2 half-moves
26 Ra6 loss in 2 half-moves
27 Ra7 loss in 2 half-moves
28 Rc8 loss in 2 half-moves
29 Rd8 loss in 2 half-moves
30 Re8 loss in 2 half-moves