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

EGTB: win in 2 half-moves

# move score
1 Ka4 win in 1 half-moves
2 Kb4 win in 1 half-moves
3 K5b5 draw
4 K5b6 draw
5 K6b6 draw
6 K6b5 loss in 2 half-moves
7 Ka7 loss in 2 half-moves
8 Kb7 loss in 2 half-moves