The Kobra of Death 

My partner who built the dustscouts in my base, gives me the factory.  By this time, I have a refinery made (remember I built a bar, then ref).  The moment he gives me the factory, I upgrade it and start making a Kobra.  Now that I gave him those 10 gas and barracks in his base, he proceeds to dump out 10 more gas while my kobra is being made.  The reason I can afford a Kobra is because my partner spent the 1K making the factory!  All I need is to spend 1K upgrading it, plus another 1200 making the Kobra.  Because my partner did the spending on the fac, I can now afford a Kobra!!

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