Oct. 14 (Bloomberg) -- The ruble gained 0.8 percent to 31.0049 against the dollar by 10:06 a.m. in Moscow, heading for its strongest close since Sept. 16 and the biggest weekly gain since December 2009. The Russian currency rose for a sixth day versus the euro, adding 0.1 percent to 42.7634 versus the euro, poised for a third consecutive weekly gain.

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