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

EGTB: win in 4 half-moves

# move score
1 Kb2 win in 3 half-moves
2 Rc1 win in 3 half-moves
3 Rc2 win in 3 half-moves
4 Rd3 win in 5 half-moves
5 Ka2 draw
6 Kb1 draw
7 Kd2 draw
8 Kd3 draw
9 Kd4 draw
10 Ke2 draw
11 Ke4 draw
12 Kf2 draw
13 Kf3 draw
14 Rc4 draw
15 Rc5 draw
16 Kf4 loss in 2 half-moves
17 Ra3 loss in 2 half-moves
18 Rb3 loss in 2 half-moves
19 Rc6 loss in 2 half-moves
20 Rc7 loss in 2 half-moves
21 Rc8 loss in 2 half-moves