Greatest Ever Chess Opening Ideas!

What are the greatest opening ideas in chess history? This is a fascinating question that would undoubtedly spark endless debate and discussion amongst all the experts and enthusiasts of the game. From the invention and development of openings which are now considered to be mainline, to the wealth of stunning one-move novelties which have convincingly overturned previous expert assessments, there is certainly a plethora of brilliant ideas to choose from – everyone will have their own opinio...