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 Ra4 draw
3 Rb4 draw
4 Rc4 draw
5 Rd4 draw
6 Re1 draw
7 Re2 draw
8 Re3 draw
9 Rg4 draw
10 Rh4 draw
11 Kf7 loss in 2 half-moves
12 Kf8 loss in 2 half-moves
13 Kgh7 loss in 2 half-moves
14 Kgg7 loss in 1 half-moves
15 Khg7 loss in 1 half-moves
16 Khh7 loss in 1 half-moves
17 Re5 loss in 1 half-moves
18 Re6 loss in 1 half-moves
19 Re7 loss in 1 half-moves
20 Re8 loss in 1 half-moves