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 Ra2 draw
6 Rb2 draw
7 Rf3 draw
8 Rf4 draw
9 Rg2 draw
10 Ka6 loss in 2 half-moves
11 Ka8 loss in 2 half-moves
12 Kab6 loss in 2 half-moves
13 Kab7 loss in 2 half-moves
14 Kb5 loss in 2 half-moves
15 Kb8 loss in 2 half-moves
16 Kc5 loss in 2 half-moves
17 Kc7 loss in 2 half-moves
18 Kcb6 loss in 2 half-moves
19 Kcb7 loss in 2 half-moves
20 Kd5 loss in 2 half-moves
21 Kd6 loss in 2 half-moves
22 Kd7 loss in 2 half-moves
23 Rc2 loss in 2 half-moves
24 Rd2 loss in 2 half-moves
25 Re2 loss in 2 half-moves
26 Rf1 loss in 2 half-moves
27 Rh2 loss in 2 half-moves