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

EGTB: win in 4 half-moves

# move score
1 Rd8 win in 3 half-moves
2 Ka8 draw
3 Kb7 draw
4 Kb8 draw
5 Kd7 draw
6 Kd8 draw
7 Ke7 draw
8 Kf7 draw
9 Kf8 draw
10 Rc2 draw
11 Rc3 draw
12 Rc5 draw
13 Rc6 draw
14 Rc7 draw
15 Ra8 loss in 4 half-moves
16 Ka6 loss in 2 half-moves
17 Kb6 loss in 2 half-moves
18 Rb8 loss in 2 half-moves
19 Rc1 loss in 2 half-moves
20 Rc4 loss in 2 half-moves