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

EGTB: win in 2 half-moves

# move score
1 Kb3 win in 1 half-moves
2 Ra5 draw
3 Ra6 draw
4 Ra7 loss in 10 half-moves
5 Rd8 loss in 6 half-moves
6 Rh8 loss in 6 half-moves
7 Ka5 loss in 4 half-moves
8 Kb4 loss in 2 half-moves
9 Kb5 loss in 2 half-moves
10 Rb8 loss in 2 half-moves
11 Rc8 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 Ka3 loss in 1 half-moves