White takes advantage of the constricted position
of Black's king - notice that it has no flight squares!
1.Bh5+ g6
2.Nxg6 Kf7
Of course not 2...hxg6 3.Bxg6# checkmate!
Nor does 2...Nf6 3.Bxf6 hxg6 4.Bxg6++- save Black.
Finally, 2...Bg7 3.Ne5+ (discovered check) 3...Kf8
4.Be7+ (attraction - the king is forced to e7: 4...Kg8 5.Bf7#
checkmate.) 4...Kxe7 5.Nc6+ The knight fork picks up Black's
queen. Game over.
3.Nxh8+
Double check!
3...Kg7
3...Kg8 is the same thing.
4.Qxd2 Kxh8+-
White has won the exchange (rook for a minor
piece) and a pawn - enough that with best play White should win.
