To blaze a trail means to make your way into unexplored territory so that others may follow. I don't see how you can do that in a chess game. To clear the way to the King would be to remove any obstacles in the path to the King, and that you can do.
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soheil1Does the context help?Having the skills to blaze a trail to the enemy King is important.That's what I was thinking. The writer does not know what "blaze a trail" means.