Still trying to solve the bishop problem.
1. e2e4  1... c7c6  2. d2d4  2... d7d5  3. e4d5  3... c6d5  4. f1d3 The Exchange line that Fischer revived in the 1970s lives a new life thanks to the rise of the London System. A lot of positions transpose from both the openings and the pawn chains are quite similar. 4... g8f6  5. h2h3 Underlining Black's major problem in the position: the future of his light-squared bishop. 5... b8c6  6. g1f3  6... c6b4  7. b1c3 This is quite an interesting sideline, but should not have come as a major surprise. Aronian is playing his Ragozin with colors reversed.