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

EGTB: win in 4 half-moves

# move score
1 Rf4 win in 3 half-moves
2 Kf3 draw
3 Kf4 draw
4 Kf5 draw
5 Kgg3 draw
6 Kgg5 draw
7 Kgh3 draw
8 Kgh5 draw
9 Khg3 draw
10 Khg5 draw
11 Khh3 draw
12 Khh5 draw
13 Rc1 draw
14 Rc2 draw
15 Rc3 draw
16 Rc8 draw
17 Rd4 draw
18 Re4 draw
19 Ra4 loss in 2 half-moves
20 Rb4 loss in 2 half-moves
21 Rc5 loss in 2 half-moves
22 Rc6 loss in 2 half-moves
23 Rc7 loss in 2 half-moves