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 Kb8 draw
3 Kcd7 draw
4 Kdd7 draw
5 Ke7 draw
6 Ke8 draw
7 Rf8 draw
8 Rg8 draw
9 Rh1 draw
10 Rh7 draw
11 Kb7 loss in 2 half-moves
12 Kcc7 loss in 2 half-moves
13 Kdc7 loss in 2 half-moves
14 Rh2 loss in 2 half-moves
15 Rh3 loss in 2 half-moves
16 Rh4 loss in 2 half-moves
17 Rh5 loss in 2 half-moves
18 Rh6 loss in 2 half-moves