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 Ka2 draw
3 Ka5 draw
4 Ka7 draw
5 Kb1 draw
6 Kb2 draw
7 Kb5 draw
8 Kb6 draw
9 Kb7 draw
10 Ra4 draw
11 Rb3 draw
12 Rc3 draw
13 Rd3 draw
14 Rh3 draw
15 Ra2 loss in 2 half-moves
16 Re3 loss in 2 half-moves
17 Rf3 loss in 2 half-moves
18 Rg3 loss in 2 half-moves