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

EGTB: win in 2 half-moves

# move score
1 Ra4 win in 1 half-moves
2 Ka6 draw
3 Ka8 draw
4 Kb6 draw
5 Ra2 draw
6 Ra3 draw
7 Ra6 draw
8 Rb5 draw
9 Rc5 draw
10 Rd5 draw
11 Rh5 draw
12 Kb7 loss in 2 half-moves
13 Kb8 loss in 2 half-moves
14 Ra1 loss in 2 half-moves
15 Re5 loss in 2 half-moves
16 Rf5 loss in 2 half-moves
17 Rg5 loss in 2 half-moves