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

EGTB: win in 2 half-moves

# move score
1 Ka2 win in 1 half-moves
2 Ka5 win in 1 half-moves
3 Kb5 win in 1 half-moves
4 K3b4 loss in 2 half-moves
5 Kb2 loss in 2 half-moves
6 K3b3 loss in 1 half-moves
7 K4b3 loss in 1 half-moves
8 K4b4 loss in 1 half-moves