Hello and I am sorry for writing in English instead in Russian, but I can only read, not speak or write. I want to present you a good web page where you can play online chess against one of the strongest chess machines. What is more important about this site is that there you can find regularly opening analysis and other chess tactics made by IM Kalin Karakehajov from Bulgaria. He is the founder and the owner of this web page. I hope it would be interesting and helpful for you. The web address is Online chess