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

EGTB: win in 1 half-moves

# move score
1 Rxe8 win in 1 half-moves
2 R1xb5 loss in 4 half-moves
3 R8xb5 loss in 4 half-moves
4 Raxb5 loss in 4 half-moves