Seen this game that you referred - infact seen another game where you resigned 14 - 15th move when you could have actually won by eating a bishop in the next move as the bishop is pinned.
Do not play as well as you (seen your games) but one thing which I try to do is once I am a peice or two up - keep the momentum and just trade-off the peices especially when against AI :) that helps..... all the best and I hope you beat Computer4 Impossible soon....
After not winning this game due to accidentally moving my queen to a hanging square, I decided I would make a list of things I want to do to Comp4 every time I come close to winning... and lose (which happens more and more frequently).
So, let's begin:
Hardware:
1. Beat it with a bat.
2. Beat it with a cat.
3. Heat it with a marinated cat (reference to that maniac who got caught with a marinated cat in his trunk).
4. Throw it out the window of a 107-story tower.
5. Throw it out of a moving airplane.
6. Poke a great white shark in the eye with Comp4 and throw Comp4 in its mouth.
7. Roast in my oven on High for 45 minutes, add garlic seasoning and stuff with apple marinated in honey.
Software: (I assume Comp4 IS only software)
1. Download a silly virus to slow down Comp4.
2. Download one of those .exe programs to track Comp4's moves and make it think it's being stalked.
3. Make it play its 10th top choice in moves.
4. Download a program that makes it create funny noises whenever it loses a piece (I'm not kidding about this one).
5. Make poisoned cookies for Comp4. Get it, those temporary Internet files? Hahaha. I kill myself... not in a good way.
So, what would YOU do to Comp4 when it screws you over?