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

EGTB: win in 4 half-moves

# move score
1 Rf6 win in 3 half-moves
2 Rf7 win in 5 half-moves
3 Rf8 win in 11 half-moves
4 Kb7 draw
5 Kb8 draw
6 Kc7 draw
7 Kcd7 draw
8 Kcd8 draw
9 Ke8 draw
10 Ked7 draw
11 Ked8 draw
12 Kf6 draw
13 Kf7 draw
14 Kf8 draw
15 Ra5 draw
16 Rf1 draw
17 Rg5 draw
18 Rh5 draw
19 Kd6 loss in 2 half-moves
20 Ke6 loss in 2 half-moves
21 Rb5 loss in 2 half-moves
22 Rc5 loss in 2 half-moves
23 Rd5 loss in 2 half-moves
24 Re5 loss in 2 half-moves
25 Rf2 loss in 2 half-moves
26 Rf3 loss in 2 half-moves
27 Rf4 loss in 2 half-moves