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

EGTB: win in 2 half-moves

# move score
1 Ra7 win in 1 half-moves
2 Kb6 draw
3 Kb7 draw
4 Kc7 draw
5 Kd6 draw
6 Kd7 draw
7 Rb7 draw
8 Rc7 draw
9 Rd7 draw
10 Re7 draw
11 Rf1 draw
12 Rf3 draw
13 Rf4 draw
14 Rf5 draw
15 Rf8 draw
16 Rg7 draw
17 Rh7 draw
18 Kb5 loss in 2 half-moves
19 Kc5 loss in 2 half-moves
20 Kd5 loss in 2 half-moves
21 Rf2 loss in 2 half-moves
22 Rf6 loss in 2 half-moves