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

EGTB: win in 2 half-moves

# move score
1 Rc8 win in 1 half-moves
2 Ka7 draw
3 Kb8 draw
4 Kd3 draw
5 Kd4 draw
6 Kd5 draw
7 Ke3 draw
8 Rb8 draw
9 Rd8 draw
10 Re6 draw
11 Re7 draw
12 Kb7 loss in 2 half-moves
13 Ke5 loss in 2 half-moves
14 Kf3 loss in 2 half-moves
15 Kf4 loss in 2 half-moves
16 Kf5 loss in 2 half-moves
17 Re5 loss in 2 half-moves
18 Rf8 loss in 2 half-moves
19 Rg8 loss in 2 half-moves
20 Rh8 loss in 2 half-moves