Why is this an inaccuracy?

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Avatar of SassyStoic
Black plays bg7, so instead of playing nf7, I played bf7+ to remove castle opportunity and then took bishop back out to mid. I know I would be up more material if I wouldve forked the bishop and queen, but I was still in position to do so the next turn. Why is this an inaccuracy? 
 
 

 

Avatar of Toldsted

Because in the engine logic 5,3 is much better than 3,8. But that is rubbish. A winning position is a winning position. And if you found it more easy to win with Bxf7+ then it was the best move for you - and in no way it was an inaccuracy.