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

EGTB: loss in 3 half-moves

# move score
1 K2b1 loss in 2 half-moves
2 Ka3 loss in 2 half-moves
3 Kb3 loss in 2 half-moves
4 K1b1 loss in 1 half-moves
5 K1b2 loss in 1 half-moves
6 K2b2 loss in 1 half-moves