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Ruy Lopez: Bird's Defense DeferredBETA

43%54%
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47% Nxd437%60%22% Nxe560%37%16% c338%58%8% O-O38%59%3% d339%58%2% Nc340%56%1% Bb347%50%0% c444%6%50%0% a335%61%0% Ng550%46%0% h311%61%0% b379%