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

EGTB: win in 4 half-moves

# move score
1 Kb2 win in 3 half-moves
2 Kd2 win in 3 half-moves
3 Kc2 draw
4 Kb1 loss in 14 half-moves
5 Kd1 loss in 8 half-moves