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

EGTB: win in 4 half-moves

# move score
1 Kd1 win in 3 half-moves
2 Kd2 win in 3 half-moves
3 Kc2 loss in 44 half-moves
4 Kb2 loss in 38 half-moves
5 Kb1 loss in 24 half-moves