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

EGTB: draw

# move score
1 b4 draw
2 Kaa7 draw
3 Kc7 draw
4 Kc8 draw
5 Ka8 loss in 4 half-moves
6 Kab7 loss in 4 half-moves
7 Kb6 loss in 4 half-moves
8 Kba7 loss in 4 half-moves
9 Kbb7 loss in 4 half-moves
10 Ka5 loss in 3 half-moves