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

EGTB: win in 4 half-moves

# move score
1 Rb5 win in 3 half-moves
2 Rb6 win in 3 half-moves
3 Rb8 win in 3 half-moves
4 Rb4 draw
5 Rb7 draw
6 Rc3 draw
7 Rd3 draw
8 Re3 draw
9 Rf3 draw
10 Kg5 loss in 2 half-moves
11 Kg6 loss in 2 half-moves
12 Kg8 loss in 2 half-moves
13 Kh5 loss in 2 half-moves
14 Ra3 loss in 2 half-moves
15 Rb1 loss in 2 half-moves
16 Rb2 loss in 2 half-moves
17 Rg3 loss in 2 half-moves
18 Rh3 loss in 2 half-moves
19 K6g7 loss in 1 half-moves
20 K6h7 loss in 1 half-moves
21 K8g7 loss in 1 half-moves
22 K8h7 loss in 1 half-moves