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 5 half-moves
4 Rb5 win in 5 half-moves
5 Kb3 draw
6 Kc3 draw
7 Kd3 draw
8 Rb3 draw
9 Rb6 draw
10 Re7 draw
11 Rf7 draw
12 Rg7 draw
13 Rh7 draw
14 Kb1 loss in 2 half-moves
15 Kb2 loss in 2 half-moves
16 Kc1 loss in 2 half-moves
17 Kd1 loss in 2 half-moves
18 Kd2 loss in 2 half-moves
19 Kf1 loss in 2 half-moves
20 Kf2 loss in 2 half-moves
21 Kg2 loss in 2 half-moves
22 Kh1 loss in 2 half-moves
23 Kh2 loss in 2 half-moves
24 Ra7 loss in 2 half-moves
25 Rb8 loss in 2 half-moves
26 Rc7 loss in 2 half-moves
27 Rd7 loss in 2 half-moves