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

EGTB: win in 6 half-moves

# move score
1 Rd8 win in 5 half-moves
2 Kb2 draw
3 Kb3 draw
4 Kb4 draw
5 Kc2 draw
6 Kc4 draw
7 Kd8 draw
8 Kf7 draw
9 Kf8 draw
10 Ra8 draw
11 Rb8 draw
12 Kd2 loss in 2 half-moves
13 Kd3 loss in 2 half-moves
14 Kd4 loss in 2 half-moves
15 Kd7 loss in 2 half-moves
16 Ke7 loss in 2 half-moves
17 Rc4 loss in 2 half-moves
18 Rc5 loss in 2 half-moves
19 Rc6 loss in 2 half-moves
20 Rc7 loss in 2 half-moves