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

EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Rb5 draw
3 Rb6 draw
4 Rf7 draw
5 Rg7 draw
6 Rh7 draw
7 Ka2 loss in 2 half-moves
8 Ka3 loss in 2 half-moves
9 Ka4 loss in 2 half-moves
10 Kbb2 loss in 2 half-moves
11 Kbb4 loss in 2 half-moves
12 Kbc2 loss in 2 half-moves
13 Kbc4 loss in 2 half-moves
14 Kcb2 loss in 2 half-moves
15 Kcb4 loss in 2 half-moves
16 Kcc2 loss in 2 half-moves
17 Kcc4 loss in 2 half-moves
18 Kd2 loss in 2 half-moves
19 Kd3 loss in 2 half-moves
20 Kd4 loss in 2 half-moves
21 Ra7 loss in 2 half-moves
22 Rb8 loss in 2 half-moves
23 Rc7 loss in 2 half-moves
24 Rd7 loss in 2 half-moves
25 Re7 loss in 2 half-moves