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

EGTB: win in 2 half-moves

# move score
1 b4 win in 1 half-moves
2 Ka3 win in 1 half-moves
3 Ka5 loss in 1 half-moves
4 Ka6 loss in 1 half-moves
5 Kb3 loss in 1 half-moves
6 Kb4 loss in 1 half-moves
7 Kb6 loss in 1 half-moves
8 Kb7 loss in 1 half-moves
9 Kb8 loss in 1 half-moves
10 Nb6 loss in 1 half-moves
11 Nc7 loss in 1 half-moves