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

EGTB: win in 4 half-moves

# move score
1 Rb1 win in 3 half-moves
2 Rb2 win in 3 half-moves
3 Rb4 win in 3 half-moves
4 Ra7 draw
5 Rb3 draw
6 Rb5 draw
7 Rb6 draw
8 Rc7 draw
9 Rd7 draw
10 Re7 draw
11 Kf1 loss in 2 half-moves
12 Kf2 loss in 2 half-moves
13 Kf4 loss in 2 half-moves
14 Kf5 loss in 2 half-moves
15 Kf6 loss in 2 half-moves
16 Kg2 loss in 2 half-moves
17 Kg4 loss in 2 half-moves
18 Kg6 loss in 2 half-moves
19 Kh1 loss in 2 half-moves
20 Kh2 loss in 2 half-moves
21 Kh4 loss in 2 half-moves
22 Kh5 loss in 2 half-moves
23 Kh6 loss in 2 half-moves
24 Rb8 loss in 2 half-moves
25 Rf7 loss in 2 half-moves
26 Rg7 loss in 2 half-moves
27 Rh7 loss in 2 half-moves