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

EGTB: win in 4 half-moves

# move score
1 Rb3 win in 3 half-moves
2 Rh7 win in 5 half-moves
3 Khg3 win in 9 half-moves
4 Kgg1 draw
5 Kgg3 draw
6 Kgh1 draw
7 Kgh3 draw
8 Khh1 draw
9 Khh3 draw
10 Ra7 draw
11 Rb4 draw
12 Rb5 draw
13 Rb6 draw
14 Rb8 draw
15 Kf1 loss in 2 half-moves
16 Kf2 loss in 2 half-moves
17 Kf3 loss in 2 half-moves
18 Khg1 loss in 2 half-moves
19 Rb1 loss in 2 half-moves
20 Rb2 loss in 2 half-moves
21 Rc7 loss in 2 half-moves
22 Rd7 loss in 2 half-moves
23 Re7 loss in 2 half-moves
24 Rf7 loss in 2 half-moves
25 Rg7 loss in 2 half-moves