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

EGTB: win in 2 half-moves

# move score
1 Kb6 win in 1 half-moves
2 K4b4 loss in 2 half-moves
3 K4b5 loss in 2 half-moves
4 K5b4 loss in 2 half-moves
5 K5b5 loss in 2 half-moves
6 Ka3 loss in 2 half-moves
7 Kb3 loss in 2 half-moves
8 Ra7 loss in 2 half-moves
9 Rb8 loss in 2 half-moves
10 Rd8 loss in 2 half-moves
11 Re8 loss in 2 half-moves
12 Rf8 loss in 2 half-moves
13 Rg8 loss in 2 half-moves
14 Rh8 loss in 2 half-moves
15 Ka6 loss in 1 half-moves
16 Ra6 loss in 1 half-moves
17 Rc8 loss in 1 half-moves