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

EGTB: loss in 43 half-moves

# move score
1 Kb4 loss in 42 half-moves
2 Ka4 loss in 40 half-moves
3 Kb5 loss in 38 half-moves
4 Ka6 loss in 24 half-moves
5 Kb6 loss in 24 half-moves