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 Rb7 win in 3 half-moves
4 Rb8 win in 3 half-moves
5 Ra3 draw
6 Rb4 draw
7 Rd3 draw
8 Re3 draw
9 Rf3 draw
10 Ke7 loss in 2 half-moves
11 Ke8 loss in 2 half-moves
12 Kf5 loss in 2 half-moves
13 Kf6 loss in 2 half-moves
14 Kff7 loss in 2 half-moves
15 Kfg7 loss in 2 half-moves
16 Kg5 loss in 2 half-moves
17 Kg8 loss in 2 half-moves
18 Kgf7 loss in 2 half-moves
19 Kgg7 loss in 2 half-moves
20 Kh5 loss in 2 half-moves
21 Kh6 loss in 2 half-moves
22 Kh7 loss in 2 half-moves
23 Rb1 loss in 2 half-moves
24 Rb2 loss in 2 half-moves
25 Rc3 loss in 2 half-moves
26 Rg3 loss in 2 half-moves
27 Rh3 loss in 2 half-moves