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

EGTB: win in 4 half-moves

# move score
1 Ra4 win in 3 half-moves
2 Ra3 win in 5 half-moves
3 Ra5 win in 5 half-moves
4 Rb2 win in 5 half-moves
5 Rf2 win in 7 half-moves
6 Rg2 win in 7 half-moves
7 Kc4 draw
8 Kc5 draw
9 Kd4 draw
10 Ke4 draw
11 Ke5 draw
12 Ra1 draw
13 Rd2 draw
14 Rh2 draw
15 Kc6 loss in 2 half-moves
16 Kd6 loss in 2 half-moves
17 Ke6 loss in 2 half-moves
18 Ra6 loss in 2 half-moves
19 Ra7 loss in 2 half-moves
20 Ra8 loss in 2 half-moves
21 Rc2 loss in 2 half-moves
22 Re2 loss in 2 half-moves