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

EGTB: win in 18 half-moves

# move score
1 Kb3 win in 17 half-moves
2 b5 loss in 4 half-moves
3 K4b5 loss in 4 half-moves
4 K6a5 loss in 4 half-moves
5 Ka7 loss in 4 half-moves
6 Kb4 loss in 4 half-moves
7 Kb7 loss in 4 half-moves
8 K4a5 loss in 3 half-moves
9 K6b5 loss in 3 half-moves
10 Ka3 loss in 3 half-moves
11 Nc7 loss in 3 half-moves