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

EGTB: win in 4 half-moves

# move score
1 Re8 win in 3 half-moves
2 Ra1 draw
3 Ra3 draw
4 Ra4 draw
5 Ra5 draw
6 Rd8 draw
7 Ke7 loss in 2 half-moves
8 Ke8 loss in 2 half-moves
9 Kf7 loss in 2 half-moves
10 Kfg7 loss in 2 half-moves
11 Kfg8 loss in 2 half-moves
12 Kg6 loss in 2 half-moves
13 Kh6 loss in 2 half-moves
14 Kh8 loss in 2 half-moves
15 Khg7 loss in 2 half-moves
16 Khg8 loss in 2 half-moves
17 Ra2 loss in 2 half-moves
18 Ra6 loss in 2 half-moves
19 Ra7 loss in 2 half-moves
20 Rb8 loss in 2 half-moves
21 Rc8 loss in 2 half-moves