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 Kd6 draw
3 Kd7 draw
4 Kd8 draw
5 Ke8 draw
6 Ra8 draw
7 Rc6 draw
8 Rc7 draw
9 Rd8 draw
10 Re8 draw
11 Kf7 loss in 12 half-moves
12 Kf8 loss in 10 half-moves
13 Kf6 loss in 8 half-moves
14 Ke6 loss in 6 half-moves
15 Rc5 loss in 4 half-moves
16 Rc2 loss in 2 half-moves
17 Rc3 loss in 2 half-moves
18 Rc4 loss in 2 half-moves
19 Rf8 loss in 2 half-moves
20 Rg8 loss in 2 half-moves
21 Rh8 loss in 2 half-moves
22 Rc1 loss in 1 half-moves