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

EGTB: win in 6 half-moves

# move score
1 Re8 win in 5 half-moves
2 Ra3 draw
3 Ra5 draw
4 Rb7 draw
5 Rb8 draw
6 Rc7 draw
7 Rc8 draw
8 Rd7 draw
9 Rd8 draw
10 Re7 draw
11 Ra1 loss in 2 half-moves
12 Ra2 loss in 2 half-moves
13 Ra4 loss in 2 half-moves
14 Ra6 loss in 2 half-moves
15 Rf7 loss in 2 half-moves
16 Rf8 loss in 2 half-moves
17 Rg7 loss in 2 half-moves
18 Rg8 loss in 2 half-moves
19 Rh7 loss in 2 half-moves
20 Rh8 loss in 2 half-moves