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We played without restarts. In week 4, the opponent attacked my main city and almost wiped out all my troops (didn't have enough for a ransom) – he had a Tactics Expert, an Air Expert, and 6 Firebirds. We continued the game.
I captured one of Intofire's non-main cities with a Scout. He then went looking for me and, after a couple of weeks, arrived at my city but didn't attack; instead, he continued along the road to capture other smaller towns. I bought all the available troops and attacked his main city and won (Expert Slow and Expert Haste decided the outcome). Intofire surrendered.