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

EGTB: win in 4 half-moves

# move score
1 Rf1 win in 3 half-moves
2 Kf1 draw
3 Kf2 draw
4 Kgg2 draw
5 Kgh2 draw
6 Khg2 draw
7 Khh2 draw
8 Ra1 draw
9 Re2 draw
10 Re3 draw
11 Re7 draw
12 Rb1 loss in 2 half-moves
13 Rc1 loss in 2 half-moves
14 Rd1 loss in 2 half-moves
15 Re4 loss in 2 half-moves
16 Re5 loss in 2 half-moves
17 Re6 loss in 2 half-moves
18 Re8 loss in 2 half-moves