B43 - 西西里:卡恩(5.Nc3变例)
Variation: 西西里:卡恩(5.Nc3变例)
Initial Move: 白方将骑士推进至c3,以阻止黑方典型的后翼扩张。这使得局面更趋向于经典的西西里防御风格,双方胜算均等。 Learn this opening step by step
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