Not all tactics are made of gold

Sometimes during our games we find an awesome tactical blow to win material or checkmate. We confidently play our masterpiece move only to have it refuted by our opponent or later in analysis. I suspect this happens to players at most (if not all) levels so I figured I'd share a few of my own.

The first is a game I won by offering a sacrifice that was accepted. A clever declining of the sacrifice would have ruined the idea altogether.

 The second example is a game that features an early unsound sacrifice on my part followed by my opponent allowing me to regain control of the game until I finally blow it with a miscalculated tactic. The whole game is kind of fun, so I figure it's worth sharing.