Lessons From Altea: Double Trouble

MY round-one game at the Cap Negret 65+ seniors reached the following position after 13 moves.

Black has just played 13...Nf6-h5!?

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My opponent decided (rightly) that 14...Nf4 is not much of a threat, and so played 14.exd5?

What he missed is that Black has the exchange-winning 14...Ng3!

In other words, 13...Nh5 contained two threats, and, as Lev Psakhis is quoted as saying by Jonathan Rowson in Chess For Zebras (Gambit, 2005): "Good moves usually have at least two ideas."

LESSON: don't stop looking for danger just because you have spotted, and correctly discounted, a threat posed by the opponent's last move - the move may contain more than one threat.