Greed in chess can be very dangerous. In this game Black gobbled up two offered rooks by White and paid the price: Brask-Gustafson, 1943:1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Bd3 Nf6 5.Bg5 dxe4 6.Bxe4 c5 7.Nf3 cxd4 8.Nxd4 Qa5 9.Bxf6 Bxc3+ 10.bxc3 Qxc3+ 11.Qd2 Qxa1+ Better was equality with 11...Qxd2+ 12.Kxd2 gxf6 13.Nb5 Na6 14.Nd6+ Ke7 15.Nxc8+ Raxc8 16.Bxb7 Rcd8+ 17.Ke3 Nb4, but Black wanted more..12.Ke2 Qxh1 and now how did White finish Black off? See Diagram.
13.Nxe6 (Actually, Black resigned here!) Nd7 14.Nxg7+ Kf8 15.Ne6+ fxe6 16.Qd6+ Kg8 17.Qxe6+ Kf8 18.Qe7+ Kg8 19.Qg7#