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

EGTB: win in 4 half-moves

# move score
1 f7 win in 3 half-moves
2 Ra6 draw
3 Rb6 draw
4 Rc6 draw
5 Re1 draw
6 Re7 draw
7 Re8 draw
8 Re5 loss in 4 half-moves
9 Re2 loss in 2 half-moves
10 Re3 loss in 2 half-moves
11 Re4 loss in 2 half-moves
12 Rd6 loss in 1 half-moves