In the Sicilian opening, after 4. Nxd4, why is there no standard line 4… Nxd4? I'd think forcing white's queen to the center would give black good opportunities. - Quora
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Sicilian Defense - A Total Guide (with White's Response)
What are some common chess openings that are not so good for white if they do not know what they are doing? - Quora
Is the Sicilian Defense a difficult chess opening, especially the Open Sicilian, and why? - Quora
What is the purpose of naming chess openings? - Quora
In the Sicilian, why does White's knight (1. e4 c5, 2. Nf3 d6, 3. d4 cxd4, 4. Nxd4 Nf6, 5. Nc3 Nc6) never take? - Quora

Sicilian Defense: Full Guide, Main Lines, Secondary Options

Which are the most important openings and defenses to learn when you are a beginner in chess? - Quora
Why are the black pieces in chess called 'black'? Would it be possible to use other names like red or green, etc.? - Quora

Sicilian Defense - A Total Guide (with White's Response)

Is the English opening the same as the Sicilian, with the difference that it's played by white? - Quora

Sicilian Defense: Full Guide, Main Lines, Secondary Options
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