Weird analytics for a needless sacrifice

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JonZarate

Hello there!

I've just played a game and went to analyze it. Game here:

I was having a look at my bad moves, noticed I could have played 12 differently, so I investigated. Surprisingly, the analysis reported white response Na3 and Nc3 as alternatives. 

Can someone explain how is this possible ?

Thanks!

hermanstinkt
I don’t really understand the question?