If your opponent cannot do anything active, then don't rush the position; instead you should let him sit there, suffer, and beg you for a draw.
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[Event "rated untimed match"]
[Site "Reykjavik"]
[Date "1987.??.??"]
[Round "?"]
[White "Petursson"]
[Black "Polugaevsky"]
[Result "0-1"]
[BlackElo "0"]
[FEN "2r5/5ppk/1p5p/b4q2/P3p3/PQ2P1P1/3N1P1P/3R2K1 b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1... Bxd2 2. Rxd2 Rc1+ 3. Rd1 ( { White can try: } 3. Kg2 Qf3+ 4. Kh3 Rg1 5. Qd5 f5 6. Rd1 Qh5# ) 3... Qe6 4. Qxe6 Rxd1+ 5. Kg2 fxe6 { Black wins with a large
material advantage. } 0-1