Hello,
firstly - sorry for english.
Have You ever thought about question: How many different openings may be used?
Few days ago i calculated it (again after 4 - year break).
Unfortunately document is only in polish language (at current moment), but there are some formulas, f(n) solvings and images, which will allow to understand.
Here is link for it (polish is similar to russian, i belive it will not big problem to You)
https://rapidshare.com/files/153732184/ … number.pdf
best regards

Отредактировано Ermijo82 (2012-01-25 16:21:51)