Solution 3


 black to move
1...Rxc3! A line to see is 2.Rxd4 Rc1+ 3.Qf1 Rxf1+ 4.Kxf1 Nxd4. But it's not whole. Black must foresee the following variation at this time. 2.Qf1 White is thorough about defense. Now both Queen and Rook are attacked. 2...Rc8! 3.Rxd4 Nxd4 Seemingly the variation is over. But 4...Rc1! Qxc1 Ne2+ is threatened. 4.Kh1 Ne2! 5...Rc1 is unavoidable and after all Black is a Knight up. (Polyak-Levin,Kiev,1949) REFERENCE : Your Move!(Yakov Neishtadt)


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