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 Kb1 win in 5 half-moves
3 Kb3 win in 5 half-moves
4 Kb4 win in 5 half-moves
5 K1a2 draw
6 K1b2 draw
7 K3a2 draw
8 K3b2 draw
9 Ka4 draw
10 Rb8 draw
11 Rc8 draw
12 Rg8 draw
13 Rh8 draw
14 Ra5 loss in 2 half-moves
15 Ra6 loss in 2 half-moves
16 Ra7 loss in 2 half-moves
17 Rd8 loss in 2 half-moves
18 Re8 loss in 2 half-moves
19 Rf8 loss in 2 half-moves