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 Kd8 draw
3 Ke7 draw
4 Kf7 draw
5 Kf8 draw
6 Kg6 draw
7 Kg7 draw
8 Kg8 draw
9 Kh6 draw
10 Kh8 draw
11 Rc1 draw
12 Kd7 loss in 2 half-moves
13 Ra8 loss in 2 half-moves
14 Rb8 loss in 2 half-moves
15 Rc2 loss in 2 half-moves
16 Rc3 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