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

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Kg6 draw
3 Kh6 draw
4 Ra8 draw
5 Rc1 draw
6 Rc2 draw
7 Rc3 draw
8 Rc6 draw
9 Kd7 loss in 2 half-moves
10 Kd8 loss in 2 half-moves
11 Ke7 loss in 2 half-moves
12 Kf7 loss in 2 half-moves
13 Kf8 loss in 2 half-moves
14 Kg7 loss in 2 half-moves
15 Kg8 loss in 2 half-moves
16 Kh8 loss in 2 half-moves
17 Rc4 loss in 2 half-moves
18 Rc5 loss in 2 half-moves
19 Rc7 loss in 2 half-moves
20 Rd8 loss in 2 half-moves