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 Rg6 win in 5 half-moves
4 Rc3 draw
5 Rd3 draw
6 Re3 draw
7 Rg4 draw
8 Rg5 draw
9 Rh3 draw
10 Ka7 loss in 2 half-moves
11 Ka8 loss in 2 half-moves
12 Kb7 loss in 2 half-moves
13 Kbc7 loss in 2 half-moves
14 Kbc8 loss in 2 half-moves
15 Kc6 loss in 2 half-moves
16 Kd6 loss in 2 half-moves
17 Kd8 loss in 2 half-moves
18 Kdc7 loss in 2 half-moves
19 Kdc8 loss in 2 half-moves
20 Ke6 loss in 2 half-moves
21 Ke7 loss in 2 half-moves
22 Ke8 loss in 2 half-moves
23 Ra3 loss in 2 half-moves
24 Rb3 loss in 2 half-moves
25 Rf3 loss in 2 half-moves
26 Rg1 loss in 2 half-moves
27 Rg2 loss in 2 half-moves