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

EGTB: win in 1 half-moves

# move score
1 Rxb6 win in 39 half-moves
2 Kaxb6 loss in 2 half-moves
3 Kcxb6 loss in 2 half-moves
4 Rxg8 loss in 2 half-moves