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

EGTB: win in 4 half-moves

# move score
1 Re1 win in 3 half-moves
2 Re2 win in 3 half-moves
3 Ra8 draw
4 Re3 draw
5 Re4 draw
6 Re7 draw
7 Rf8 draw
8 Kf1 loss in 2 half-moves
9 Kf2 loss in 2 half-moves
10 Kg2 loss in 2 half-moves
11 Kh1 loss in 2 half-moves
12 Kh2 loss in 2 half-moves
13 Rb8 loss in 2 half-moves
14 Rc8 loss in 2 half-moves
15 Rd8 loss in 2 half-moves
16 Re5 loss in 2 half-moves
17 Re6 loss in 2 half-moves
18 Rg8 loss in 2 half-moves
19 Rh8 loss in 2 half-moves