Always try to eliminate key defenders. In the example below, White needs access to the c6 square so he plays Rxd5 and wins the game. Tactics level: easy. Apply this to your own games. 38. Nc6 is mate and Black can't prevent it.

[Event "Live Chess"]
[Site "Chess.com"]
[Date "2017.01.01"]
[Round "?"]
[White "NCMVas"]
[Black "domenico-84"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "1994"]
[BlackElo "1982"]
[PlyCount "73"]
[EventDate "2017.??.??"]
[TimeControl "180"]
[WhiteClock "0:01:02"]
[BlackClock "0:01:05"]
1. d4 {0} Nf6 {1} 2. Bg5 {1} e6 {1} 3. e3 {1} d5 {2} 4. Bd3 {1} Be7 {2} 5. Nf3
{1} Nbd7 {2} 6. O-O {1} O-O {1} 7. Nbd2 {2} c5 {2} 8. c3 {0} b6 {1} 9. Qe2 {1}
Bb7 {2} 10. Rfe1 {1} h6 {2} 11. Bh4 {2} Ne4 {3} 12. Bxe7 {1} Qxe7 {0} 13. Rad1
{5} f5 {6} 14. Ne5 {12} Nxe5 {2} 15. dxe5 {1} a6 {7} 16. Bxe4 {1} fxe4 {2} 17.
f4 {3} exf3 {1} 18. Nxf3 {1} Rf5 {3} 19. c4 {8} dxc4 {5} 20. e4 {4} Rf4 {5} 21.
Qxc4 {2} Raf8 {3} 22. Re3 {3} b5 {5} 23. Qd3 {5} c4 {7} 24. Qd6 {7} Qxd6 {5}
25. exd6 {2} Rxe4 {3} 26. Rxe4 {2} Bxe4 {0} 27. d7 {2} Rd8 {10} 28. Ne5 {2} Bd5
{6} 29. g3 {4} Kf8 {3} 30. Kf2 {1} Ke7 {1} 31. Ke3 {1} g5 {5} 32. Kd4 {4} Rf8 {
7} 33. Kc5 {3} Rf2 {5} 34. Kb6 {6} Kd8 {2} 35. Kc5 {5} Rxb2 {3} 36. Kd6 {2} Rf2
{3} 37. Rxd5 {NCMVas won by resignation} 1-0​

​Replay my blitz game here.

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