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

EGTB: win in 2 half-moves

# move score
1 Kb4 win in 1 half-moves
2 Kb5 loss in 50 half-moves
3 Ka3 loss in 48 half-moves
4 Ka5 loss in 48 half-moves
5 Kb3 loss in 48 half-moves