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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Kd4 win in 3 half-moves
3 Rc4 win in 3 half-moves
4 Rc6 win in 3 half-moves
5 Rc7 win in 3 half-moves
6 Rc8 win in 3 half-moves
7 Kc4 win in 7 half-moves
8 Kb5 win in 15 half-moves
9 Ra5 win in 25 half-moves
10 Ka5 win in 27 half-moves
11 Kc6 win in 33 half-moves
12 Kd6 win in 39 half-moves
13 Ke6 win in 39 half-moves
14 Ke4 draw
15 Ke5 draw
16 Rc3 loss in 4 half-moves
17 Ka3 loss in 2 half-moves
18 Kb3 loss in 2 half-moves
19 Rb5 loss in 2 half-moves
20 Rc1 loss in 2 half-moves
21 Rc2 loss in 2 half-moves