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 Ka2 draw
3 Kb1 draw
4 Kb2 draw
5 Ke4 draw
6 Ke5 draw
7 Ke6 draw
8 Kf4 draw
9 Kg4 draw
10 Kg5 draw
11 Ra3 draw
12 Rb3 draw
13 Rc3 draw
14 Rd3 draw
15 Re3 draw
16 Rf2 draw
17 Rf4 draw
18 Kf6 loss in 2 half-moves
19 Kg6 loss in 2 half-moves
20 Rg3 loss in 2 half-moves
21 Rh3 loss in 2 half-moves