In the Dragon, Black fianchettos his bishop on the h8–a1 diagonal. The line is one of the sharpest variations of the Sicilian Defence, making it one of the sharpest of all chess openings.
The modern form of the Dragon was originated by German master Louis Paulse around 1880. It was played frequently by Henry Bird that decade, then received general acceptance around 1900 when played by Harry Nelson Pillsbury and other masters.
The name "Dragon" was first coined by Russian chess master and amateur astronomer Fyodor Dus Chotimirksy who noted the resemblance of Black's kingside pawn structure to the constellation Draco.
I neither play with Dragon , nor against it. It's very risky to play it if your opponent knows all theory. But unprepared player can be trapped in it.
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