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

EGTB: win in 4 half-moves

# move score
1 Kb7 win in 3 half-moves
2 Kb6 win in 9 half-moves
3 Ka7 win in 13 half-moves
4 Nf6 draw
5 Nf8 draw
6 Ng5 loss in 4 half-moves
7 Ka5 loss in 2 half-moves
8 Kb5 loss in 2 half-moves