Best opening
Your only important task in the opening is to reach a middle-game position in which you feel comfortable and confident.
Whatever sequence of moves gets you there is the best opening for YOU.
For me, it's the King's Indian Attack as White, the King's Indian Defense as Black against 1. d4, and the Sicilian Najdorf as Black against 1. e4.
For you it might be something completely different.
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