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

EGTB: win in 2 half-moves

# move score
1 Kb5 win in 1 half-moves
2 Kb6 win in 1 half-moves
3 Kb7 win in 1 half-moves
4 Ra8 win in 1 half-moves
5 Ka5 loss in 2 half-moves
6 Rc7 loss in 2 half-moves
7 Rd7 loss in 2 half-moves
8 Re7 loss in 2 half-moves
9 Rf7 loss in 2 half-moves
10 Rg7 loss in 2 half-moves
11 Rh7 loss in 2 half-moves
12 Rb7 loss in 1 half-moves