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rare to See such Positions

I ve succeed in Building It with My special Feels in Game, but sometimes, I m not Active enought , and missing Good Chances, I wish I could see chances straight away, but how to Improve My Vision to see all Variants and built Beauty Structures like That?
also why that bishop move in the beginning seems like mistake for Engine?( 10- B g6 , instead of B e6
why is here 18Kf3 is less stable and prefered for Engine , then his pawn f4?