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

EGTB: win in 4 half-moves

# move score
1 Ra4 win in 3 half-moves
2 K3a2 draw
3 Ra5 draw
4 Rd6 draw
5 Re6 draw
6 Rf6 draw
7 Rg6 draw
8 Ka4 loss in 2 half-moves
9 Kb1 loss in 2 half-moves
10 Kb3 loss in 2 half-moves
11 Kb4 loss in 2 half-moves
12 Ra7 loss in 2 half-moves
13 Ra8 loss in 2 half-moves
14 Rb6 loss in 2 half-moves
15 Rc6 loss in 2 half-moves
16 Rh6 loss in 2 half-moves
17 K1a2 loss in 1 half-moves
18 K1b2 loss in 1 half-moves
19 K3b2 loss in 1 half-moves