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

EGTB: win in 4 half-moves

# move score
1 Ra6 win in 3 half-moves
2 Rb6 win in 3 half-moves
3 Rc6 win in 3 half-moves
4 Rd6 draw
5 Re1 draw
6 Re3 draw
7 Re5 draw
8 Rg6 draw
9 Ka7 loss in 2 half-moves
10 Ka8 loss in 2 half-moves
11 Kb7 loss in 2 half-moves
12 Kc7 loss in 2 half-moves
13 Kc8 loss in 2 half-moves
14 Re2 loss in 2 half-moves
15 Re4 loss in 2 half-moves
16 Re7 loss in 2 half-moves
17 Re8 loss in 2 half-moves
18 Rf6 loss in 2 half-moves
19 Rh6 loss in 2 half-moves