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 K6a7 draw
3 K6b7 draw
4 K8a7 draw
5 K8b7 draw
6 Ka5 draw
7 Kb5 draw
8 Kb6 draw
9 Kb8 draw
10 Ra7 draw
11 Rc7 draw
12 Rd7 draw
13 Re7 draw
14 Rf3 draw
15 Rf4 draw
16 Rf5 draw
17 Rf6 draw
18 Rf8 draw
19 Rf1 loss in 2 half-moves
20 Rf2 loss in 2 half-moves
21 Rg7 loss in 2 half-moves
22 Rh7 loss in 2 half-moves