"Best by Test" the e4 opening is arguably the most common opening for white and can be met with a handful of responses. Today we will focuse on the Petrov a symmetrical answer to any white player who hopes to get us into an italian, spanish or scotch opening (or who tries to mate us in 4 moves). for a long time this opening was rather unpopular though it gained increasingly more play after gm fabiano caruana strated playing it. note that this opening on the highest level is basically a draw offer by black and the win rate confirms that claim. but on the beginner and intermediate level you absolutely can play this for a win and a lot of your opponents will have troubles of playing against this rather rare opening. we play e5.