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

EGTB: win in 4 half-moves

# move score
1 Rb3 win in 3 half-moves
2 Rb4 draw
3 Rb5 draw
4 Rb6 draw
5 Rc7 draw
6 Rd7 draw
7 Re7 draw
8 Rg7 draw
9 Ka1 loss in 2 half-moves
10 Ka2 loss in 2 half-moves
11 Ka3 loss in 2 half-moves
12 Kb1 loss in 2 half-moves
13 Kb3 loss in 2 half-moves
14 Kbc1 loss in 2 half-moves
15 Kbc2 loss in 2 half-moves
16 Kc3 loss in 2 half-moves
17 Kd2 loss in 2 half-moves
18 Kdc1 loss in 2 half-moves
19 Kdc2 loss in 2 half-moves
20 Ke1 loss in 2 half-moves
21 Ke2 loss in 2 half-moves
22 Ra7 loss in 2 half-moves
23 Rb8 loss in 2 half-moves
24 Rf7 loss in 2 half-moves
25 Rh7 loss in 2 half-moves