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

EGTB: win in 2 half-moves

# move score
1 Rf4 win in 1 half-moves
2 Kb2 draw
3 Kb3 draw
4 Kb4 draw
5 Ra5 draw
6 Ra7 draw
7 Ra8 draw
8 Rb4 draw
9 Rd4 draw
10 Re4 draw
11 Ka2 loss in 6 half-moves
12 Ra6 loss in 2 half-moves
13 Rc4 loss in 2 half-moves
14 Rg4 loss in 2 half-moves
15 Rh4 loss in 2 half-moves