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

EGTB: win in 4 half-moves

# move score
1 Kb6 win in 3 half-moves
2 Kb7 win in 3 half-moves
3 Kb8 win in 3 half-moves
4 Kd7 win in 3 half-moves
5 Rb7 win in 3 half-moves
6 Rd7 win in 3 half-moves
7 Ka6 win in 23 half-moves
8 Ka8 draw
9 Kf7 draw
10 Rc5 draw
11 Kd6 loss in 2 half-moves
12 Kd8 loss in 2 half-moves
13 Ke6 loss in 2 half-moves
14 Ke8 loss in 2 half-moves
15 Kf6 loss in 2 half-moves
16 Kf8 loss in 2 half-moves
17 Rc1 loss in 2 half-moves
18 Rc2 loss in 2 half-moves
19 Rc3 loss in 2 half-moves
20 Rc4 loss in 2 half-moves
21 Rc6 loss in 2 half-moves
22 Rc8 loss in 2 half-moves