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

EGTB: win in 4 half-moves

# move score
1 Rg5 win in 3 half-moves
2 Rh5 win in 3 half-moves
3 Rb4 draw
4 Rb6 draw
5 Rb7 draw
6 Rb8 draw
7 Rc5 draw
8 Rd5 draw
9 Re5 draw
10 Rf5 draw
11 K7g7 loss in 2 half-moves
12 K7g8 loss in 2 half-moves
13 K8g7 loss in 2 half-moves
14 K8g8 loss in 2 half-moves
15 Kg6 loss in 2 half-moves
16 Kh6 loss in 2 half-moves
17 Ra5 loss in 2 half-moves
18 Rb1 loss in 2 half-moves
19 Rb2 loss in 2 half-moves
20 Rb3 loss in 2 half-moves