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

EGTB: win in 4 half-moves

# move score
1 Rg7 win in 3 half-moves
2 Rg8 win in 3 half-moves
3 Kb8 win in 5 half-moves
4 Ke6 draw
5 Ke7 draw
6 Ke8 draw
7 Kf6 draw
8 Kf8 draw
9 Kg6 draw
10 Kg8 draw
11 Rc5 draw
12 Rd5 draw
13 Re5 draw
14 Rf5 draw
15 Rg1 draw
16 Rg6 draw
17 Rh5 draw
18 Ka7 loss in 2 half-moves
19 Kb7 loss in 2 half-moves
20 Kg7 loss in 2 half-moves
21 Ra5 loss in 2 half-moves
22 Rb5 loss in 2 half-moves
23 Rg2 loss in 2 half-moves
24 Rg3 loss in 2 half-moves
25 Rg4 loss in 2 half-moves