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Can anybody tell me strong chess openings for black, except ruy lopez.

Sicilian the the KID are the strongest and most complex.

If there were a defence objectively stronger than any other one, everyone would know and only play it !!
So the best black opening is the one corresponding to your style of play...
Are you a rather a "quit" player, looking for solid positions ? try the caro-kann
Agressive, ready to take some risks ? sicilian
Like closed positions ? french, king's indian
Gambit amateur ? Volga

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