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

EGTB: win in 4 half-moves

# move score
1 Ra3 win in 3 half-moves
2 K1b1 draw
3 K1b2 draw
4 K2b1 draw
5 K2b2 draw
6 Ka3 draw
7 Kb3 draw
8 Ra4 draw
9 Rb5 draw
10 Rc5 draw
11 Rd5 draw
12 Rh5 draw
13 Ra6 loss in 2 half-moves
14 Ra7 loss in 2 half-moves
15 Ra8 loss in 2 half-moves
16 Re5 loss in 2 half-moves
17 Rf5 loss in 2 half-moves
18 Rg5 loss in 2 half-moves