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 Kb3 loss in 50 half-moves
3 Kb5 loss in 50 half-moves
4 Ka3 loss in 46 half-moves
5 Ka5 loss in 44 half-moves