Marshall Attacks Ruy Lopez the Proper Way
In this blog, I am providing a link to an article showing how to properly use the Marshall Attack by FM Eric Schiller:
My approach in the Marshall, although it had attained more than 90 percent success rate, should be treated with caution because it is not sound as it is just a trap. Most players know already the definition of a chess trap. To know more, check this link in wikipedia about chess traps.