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 Ka7 draw
4 Ka8 draw
5 Kb7 draw
6 Kbc7 draw
7 Kbc8 draw
8 Kd8 draw
9 Kdc7 draw
10 Kdc8 draw
11 Ke7 draw
12 Ke8 draw
13 Ra1 draw
14 Rb1 draw
15 Rf1 draw
16 Rg5 draw
17 Rg6 draw
18 Rh1 draw
19 Kc6 loss in 2 half-moves
20 Kd6 loss in 2 half-moves
21 Ke6 loss in 2 half-moves
22 Rc1 loss in 2 half-moves
23 Rd1 loss in 2 half-moves
24 Re1 loss in 2 half-moves
25 Rg2 loss in 2 half-moves
26 Rg3 loss in 2 half-moves
27 Rg4 loss in 2 half-moves