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 Re3 win in 1 half-moves
3 Rf8 win in 1 half-moves
4 Re1 win in 3 half-moves
5 Re2 win in 3 half-moves
6 Re4 win in 3 half-moves
7 Re5 win in 3 half-moves
8 Re7 win in 3 half-moves
9 Kd8 draw
10 Ra8 draw
11 Kc6 loss in 2 half-moves
12 Kc7 loss in 2 half-moves
13 Kc8 loss in 2 half-moves
14 Kd6 loss in 2 half-moves
15 Ke6 loss in 2 half-moves
16 Ke7 loss in 2 half-moves
17 Rc8 loss in 2 half-moves
18 Rd8 loss in 2 half-moves
19 Re6 loss in 2 half-moves
20 Rg8 loss in 2 half-moves
21 Rh8 loss in 2 half-moves