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

EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Ke6 win in 7 half-moves
3 Rb5 win in 7 half-moves
4 Kd4 win in 11 half-moves
5 Kd6 win in 11 half-moves
6 Ke4 win in 11 half-moves
7 Ke5 win in 11 half-moves
8 Ke7 win in 11 half-moves
9 Ra4 win in 11 half-moves
10 Rc4 win in 11 half-moves
11 Rd4 win in 11 half-moves
12 Re4 win in 11 half-moves
13 Kd7 win in 15 half-moves
14 Rb3 win in 19 half-moves
15 Rb1 win in 21 half-moves
16 Rb2 win in 21 half-moves
17 Kd8 win in 23 half-moves
18 Rb8 win in 23 half-moves
19 Kc4 win in 25 half-moves
20 Kc5 win in 25 half-moves
21 Kc6 win in 25 half-moves
22 Rf4 loss in 4 half-moves
23 Kf7 loss in 2 half-moves
24 Kf8 loss in 2 half-moves
25 Rb7 loss in 2 half-moves
26 Rg4 loss in 2 half-moves
27 Rh4 loss in 2 half-moves