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 Rc8 draw
5 Rg8 draw
6 Rh8 draw
7 Ka4 loss in 2 half-moves
8 Kb1 loss in 2 half-moves
9 Kb3 loss in 2 half-moves
10 Kb4 loss in 2 half-moves
11 Ra6 loss in 2 half-moves
12 Ra7 loss in 2 half-moves
13 Rb8 loss in 2 half-moves
14 Rd8 loss in 2 half-moves
15 Re8 loss in 2 half-moves
16 Rf8 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