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

EGTB: loss in 5 half-moves

# move score
1 b3 loss in 4 half-moves
2 Kb8 loss in 4 half-moves
3 Kc3 loss in 4 half-moves
4 Kc4 loss in 4 half-moves
5 Kd3 loss in 4 half-moves
6 Ke3 loss in 3 half-moves
7 Ke4 loss in 3 half-moves
8 Ka7 loss in 2 half-moves
9 Kb7 loss in 2 half-moves
10 Kc5 loss in 2 half-moves
11 Kd5 loss in 2 half-moves
12 Ke5 loss in 2 half-moves