[White "Daily tactics #15"]   [Black "   Taimanov - Karpov, Leningrad, 1977   "]   [Result "0-1"]   [FEN "8/6k1/1P1p2p1/3Ppn2/3q4/8/6PP/rR2QB1K b - - 0 1"]   {Black has a winning combination based on the  OVERLOADED  white queen:}   1.. Ng3!!   {Into the double attack. The point of the combination is that 2 Qxg3 Rxb1 is dead lost}   2 hxg3 Ra8!!   {A very nice backward move. White has no defence against  3... Rh8  with mate}