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

EGTB: win in 2 half-moves

# move score
1 Kb2 win in 1 half-moves
2 Kb3 loss in 8 half-moves
3 Ra6 loss in 8 half-moves
4 Ra7 loss in 8 half-moves
5 Rb8 loss in 6 half-moves
6 Ka4 loss in 4 half-moves
7 Kb4 loss in 2 half-moves
8 Ra4 loss in 2 half-moves
9 Ra5 loss in 2 half-moves
10 Rc8 loss in 2 half-moves
11 Rd8 loss in 2 half-moves
12 Re8 loss in 2 half-moves
13 Rf8 loss in 2 half-moves
14 Rg8 loss in 2 half-moves
15 Rh8 loss in 2 half-moves
16 Ka2 loss in 1 half-moves