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

EGTB: win in 4 half-moves

# move score
1 Ra7 win in 3 half-moves
2 Rc7 win in 3 half-moves
3 Rd7 win in 3 half-moves
4 Rb7 draw
5 Re7 draw
6 Rf1 draw
7 Rf4 draw
8 Rf5 draw
9 Rf6 draw
10 Ka7 loss in 2 half-moves
11 Kab7 loss in 2 half-moves
12 Kab8 loss in 2 half-moves
13 Kc7 loss in 2 half-moves
14 Kcb7 loss in 2 half-moves
15 Kcb8 loss in 2 half-moves
16 Kd7 loss in 2 half-moves
17 Kd8 loss in 2 half-moves
18 Rf2 loss in 2 half-moves
19 Rf3 loss in 2 half-moves
20 Rf8 loss in 2 half-moves
21 Rg7 loss in 2 half-moves
22 Rh7 loss in 2 half-moves