that should read "the fifth installment"
i did not use the following game types:
games that ended before 1904
7-way draws
games with clear indications of multi-accounting
games in which 3 or more players resigned:
When Italy draws, who else draws?
England: 63%
Turkey: 57%
France: 47%
Germany: 46%
Russia: 44%
Austria: 30%
When Italy is eliminated, who solos?
Turkey: 40%
Austria: 17%
Russia: 17%
England: 11%
France: 11%
Germany: 4%
When Italy solos, who's eliminated?
Austria: 80%
Turkey: 57%
Germany: 38%
France: 37%
England: 31%
Russia: 31%
Best Ally: Germany, England
Greatest Adversary: Austria, Turkey
Average Year of Victory: 1910
First, to comment on what i saw in the statistics above: clearly italian victory must go through austria (80% austrian elimination and thats not including any austrian survivals with less than 3 centers remaining!). additionally, austria gained the second most out of italian elimination and this spread was even more when you include the fact that austria had the second-to-least amount of solos in general!
concerning turkey, turkey is also a clear threat and must also be dealt with. the T/I alliance is always a tentative one and clearly one of the least stable alliances in the game. to my recollection, i think there may have been 1 T/I 2-way draw out of the 100 i looked.
another thing to examine is that there are 2 major triangles in the game. the western (E/F/G) and the eastern (R/A/T) and the question is typically: "Where does Italy stand?"
based on what we observed here, italy has much more to gain by influencing the eastern circle and leaving the west to its own. the whole of the western solos when italy is defeated is only 1/3 that of the eastern circle and less than turkey's tally of solos alone! this makes sense since italy lacks the ability to directly affect most of the west but can directly affect 2/3 of the eastern countries.
the most shocking thing is the huge drop in german solos when italy is eliminated! again, this makes sense since most of the power affecting italian defeat comes from the east and 2 of those 3 powers (russia and austria) are also likely to affect germany later on in the game. thus, germany has much to gain in seeing italy on the board and more to gain when italy is focused on turkey initially.