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 K6f7 draw
5 K6g7 draw
6 K6h7 draw
7 K8f7 draw
8 K8g7 draw
9 K8h7 draw
10 Kf5 draw
11 Kf6 draw
12 Kf8 draw
13 Kg5 draw
14 Kh5 draw
15 Kh6 draw
16 Kh8 draw
17 Ra3 draw
18 Rb4 draw
19 Rb7 draw
20 Rc3 draw
21 Rd3 draw
22 Re3 draw
23 Rb1 loss in 2 half-moves
24 Rb2 loss in 2 half-moves
25 Rf3 loss in 2 half-moves
26 Rg3 loss in 2 half-moves
27 Rh3 loss in 2 half-moves