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

EGTB: win in 4 half-moves

# move score
1 Ra8 win in 3 half-moves
2 Kb6 draw
3 Kb7 draw
4 Kb8 draw
5 Kc6 draw
6 Kc8 draw
7 Kd6 draw
8 Kd7 draw
9 Kd8 draw
10 Kg8 draw
11 Ra1 draw
12 Ra6 draw
13 Ra7 draw
14 Rb5 draw
15 Rc5 draw
16 Rd5 draw
17 Re5 draw
18 Rf5 draw
19 Kg7 loss in 2 half-moves
20 Kh7 loss in 2 half-moves
21 Ra2 loss in 2 half-moves
22 Ra3 loss in 2 half-moves
23 Ra4 loss in 2 half-moves
24 Rg5 loss in 2 half-moves
25 Rh5 loss in 2 half-moves