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

EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 K7b7 draw
3 K7b8 draw
4 K8b7 draw
5 K8b8 draw
6 Ka6 draw
7 Kb6 draw
8 Rc7 draw
9 Rd7 draw
10 Re7 draw
11 Rf3 draw
12 Rf4 draw
13 Rf5 draw
14 Rf6 draw
15 Rf8 draw
16 Rf1 loss in 2 half-moves
17 Rf2 loss in 2 half-moves
18 Rg7 loss in 2 half-moves
19 Rh7 loss in 2 half-moves