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

EGTB: win in 4 half-moves

# move score
1 Ra5 win in 3 half-moves
2 Rb5 win in 3 half-moves
3 Kb7 win in 7 half-moves
4 Kb8 win in 7 half-moves
5 Rc7 win in 7 half-moves
6 Rc8 win in 7 half-moves
7 Ka7 win in 13 half-moves
8 Kb3 draw
9 Kb4 draw
10 Kb5 draw
11 Kc3 draw
12 Kd3 draw
13 Kd4 draw
14 Kd5 draw
15 Rc6 draw
16 Rd5 draw
17 Re5 draw
18 Rf5 draw
19 Rg5 loss in 2 half-moves
20 Rh5 loss in 2 half-moves