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 Kf7 draw
3 Kf8 draw
4 Kg8 draw
5 Kh7 draw
6 Kh8 draw
7 Ra8 draw
8 Rc6 draw
9 Rc7 draw
10 Rg8 draw
11 Kf6 loss in 10 half-moves
12 Kg6 loss in 6 half-moves
13 Kh6 loss in 6 half-moves
14 Rc4 loss in 4 half-moves
15 Rc1 loss in 2 half-moves
16 Rc2 loss in 2 half-moves
17 Rc3 loss in 2 half-moves
18 Rd8 loss in 2 half-moves
19 Re8 loss in 2 half-moves
20 Rf8 loss in 2 half-moves
21 Rh8 loss in 2 half-moves
22 Rc5 loss in 1 half-moves