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 5 half-moves
3 Rb8 win in 5 half-moves
4 K6e7 draw
5 K6f7 draw
6 K6g7 draw
7 K8e7 draw
8 K8f7 draw
9 K8g7 draw
10 Ke6 draw
11 Ke8 draw
12 Kg6 draw
13 Kg8 draw
14 Ra3 draw
15 Rb4 draw
16 Rb7 draw
17 Rc3 draw
18 Rg3 draw
19 Rh3 draw
20 Ke5 loss in 2 half-moves
21 Kf5 loss in 2 half-moves
22 Kg5 loss in 2 half-moves
23 Rb1 loss in 2 half-moves
24 Rb2 loss in 2 half-moves
25 Rd3 loss in 2 half-moves
26 Re3 loss in 2 half-moves
27 Rf3 loss in 2 half-moves