What is captcha?
A CAPTCHA is a program that protects websites against bots by generating and grading tests that humans can pass but current computer programs cannot. Humans can read distorted text, but current computer programs can't.
Is it possible to bypass/break Captcha?
Breaking normal captcha is easy, but to break/bypass complex captcha with overlapping alphabetical character is not possible with 100% accuracy using computer program. Only human being can read it correctly.
What is the solution for these Captcha?
The only solution to captcha is to read it carefully without any mistake and type it correctly. The Captcha letters are case-sensitive (means for small letter you will have to type small and for capital letter you will have to type in capital)
When you zoom the page you can clearly see the alphabets, so chances of typing complex captcha correctly increases.
You can reset the zoom by clicking zoom icon on address bar.