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

EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Rb3 draw
3 Rb4 draw
4 Rb8 draw
5 Rc5 draw
6 Rd5 draw
7 Re5 draw
8 Rh5 draw
9 Ka1 loss in 2 half-moves
10 Ka2 loss in 2 half-moves
11 Kb2 loss in 2 half-moves
12 Kc1 loss in 2 half-moves
13 Kc2 loss in 2 half-moves
14 Kd1 loss in 2 half-moves
15 Kd2 loss in 2 half-moves
16 Ke2 loss in 2 half-moves
17 Kf1 loss in 2 half-moves
18 Kf2 loss in 2 half-moves
19 Ra5 loss in 2 half-moves
20 Rb6 loss in 2 half-moves
21 Rb7 loss in 2 half-moves
22 Rf5 loss in 2 half-moves
23 Rg5 loss in 2 half-moves