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

EGTB: win in 4 half-moves

# move score
1 Rf5 win in 3 half-moves
2 Rf6 win in 3 half-moves
3 Rf7 win in 3 half-moves
4 Rf8 win in 3 half-moves
5 Ra3 win in 5 half-moves
6 Rb3 win in 5 half-moves
7 Ka5 draw
8 Ka7 draw
9 Kab6 draw
10 Kab7 draw
11 Kb8 draw
12 Kc6 draw
13 Kc8 draw
14 Kcb6 draw
15 Kcb7 draw
16 Kd6 draw
17 Kd7 draw
18 Kd8 draw
19 Rf4 draw
20 Rg3 draw
21 Rh3 draw
22 Kb5 loss in 2 half-moves
23 Rc3 loss in 2 half-moves
24 Rd3 loss in 2 half-moves
25 Re3 loss in 2 half-moves
26 Rf1 loss in 2 half-moves
27 Rf2 loss in 2 half-moves