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 Ka1 draw
3 Ka2 draw
4 Kc1 draw
5 Kc2 draw
6 Kc4 draw
7 Kc5 draw
8 Kc6 draw
9 Kd4 draw
10 Kd6 draw
11 Ra7 draw
12 Rc7 draw
13 Rd7 draw
14 Re7 draw
15 Rf1 draw
16 Rf2 draw
17 Rf3 draw
18 Rf8 draw
19 Kb2 loss in 2 half-moves
20 Ke4 loss in 2 half-moves
21 Ke5 loss in 2 half-moves
22 Ke6 loss in 2 half-moves
23 Rf4 loss in 2 half-moves
24 Rf5 loss in 2 half-moves
25 Rf6 loss in 2 half-moves
26 Rg7 loss in 2 half-moves
27 Rh7 loss in 2 half-moves