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

EGTB: win in 4 half-moves

# move score
1 Rb5 win in 3 half-moves
2 Rb6 win in 3 half-moves
3 Rb7 win in 3 half-moves
4 Rb8 win in 3 half-moves
5 Rb1 draw
6 Rb4 draw
7 Ka6 loss in 2 half-moves
8 Ka8 loss in 2 half-moves
9 Kb2 loss in 2 half-moves
10 Kb6 loss in 2 half-moves
11 Kb7 loss in 2 half-moves
12 Kb8 loss in 2 half-moves
13 Kc2 loss in 2 half-moves
14 Kd2 loss in 2 half-moves
15 Kd3 loss in 2 half-moves
16 Ra3 loss in 2 half-moves
17 Rb2 loss in 2 half-moves
18 Kb4 loss in 1 half-moves
19 Kc4 loss in 1 half-moves
20 Kd4 loss in 1 half-moves