Sokolov: The Chigorin BibleThe Chigorin Variation is rich in ideas which can be used in a range of middlegame positions arising from different variations. Understanding the strategic ideas of this complex variation is also a middlegame improvement tool and a must for anyone wanting to take his or her chess to the next level. The current trend, developed in recent years, is for Black to capture on d4 with his e pawn, aiming for Benoni type pawn structure positions which lead to