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 Ka7 draw
3 Ka8 draw
4 Kb7 draw
5 Kc7 draw
6 Kc8 draw
7 Ra2 draw
8 Ra3 draw
9 Ra6 draw
10 Ra8 draw
11 Rb5 draw
12 Rc5 draw
13 Re5 draw
14 Rf5 draw
15 Ra1 loss in 2 half-moves
16 Ra7 loss in 2 half-moves
17 Rd5 loss in 2 half-moves
18 Rg5 loss in 2 half-moves
19 Rh5 loss in 2 half-moves