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 Rf2 win in 3 half-moves
3 Rb7 draw
4 Rc7 draw
5 Rd7 draw
6 Rf3 draw
7 Rf4 draw
8 Rf5 draw
9 Rf6 draw
10 Rg7 draw
11 Ka1 loss in 2 half-moves
12 Ka2 loss in 2 half-moves
13 Kbb2 loss in 2 half-moves
14 Kbc2 loss in 2 half-moves
15 Kcb2 loss in 2 half-moves
16 Kcc2 loss in 2 half-moves
17 Kd1 loss in 2 half-moves
18 Kd2 loss in 2 half-moves
19 Ra7 loss in 2 half-moves
20 Re7 loss in 2 half-moves
21 Rf8 loss in 2 half-moves
22 Rh7 loss in 2 half-moves