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

EGTB: win in 4 half-moves

# move score
1 Rc4 win in 3 half-moves
2 Kb6 draw
3 Kb7 draw
4 Kb8 draw
5 Kc6 draw
6 Kc8 draw
7 Kd6 draw
8 Kd7 draw
9 Kd8 draw
10 Ke4 draw
11 Ke5 draw
12 Kf5 draw
13 Kg5 draw
14 Ra5 draw
15 Ra7 draw
16 Rb4 draw
17 Rd4 draw
18 Re4 draw
19 Ke3 loss in 2 half-moves
20 Kf3 loss in 2 half-moves
21 Kg3 loss in 2 half-moves
22 Kg4 loss in 2 half-moves
23 Ra1 loss in 2 half-moves
24 Ra2 loss in 2 half-moves
25 Ra3 loss in 2 half-moves
26 Ra6 loss in 2 half-moves
27 Ra8 loss in 2 half-moves