Fritz 12 is a great chess product that unfortunately has no Mac version. I’ve installed it on a Bootcamp partition, and it works great. But I hate rebooting to Windows everytime I need it. Besides, all my files are in the OS X partition.
I also tried running Fritz 12 in a Parallels Desktop. It works fine as well, but then I have to boot Windows on top of OS X, which in the process they’re sharing the same computer’s resources, which proves to be an inefficient environment to run a resource hungry application like Fritz 12. I was only able to assign 3GB of RAM out of the total installed 8GB, and the application can only utilize 1 CPU out of the total 4.