1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... b7b6 Durarbayli decided to defend with the Queen's Indian Defense, a solid and flexible choice for this important match. 4. g2g3  4... c8a6 This is considered to be the main line of the 4.g3 variation. White has many ways to protect the c-pawn, and Pragg goes for the classical one. 5. b2b3  5... f8b4  6. c1d2  6... b4d2 A sideline. 7. d1d2  7... c7c6 Black wants to attack the c4-pawn with ...d7-d5, but first, he wants to ensure that he can meet cxd5 with ...cxd5. 8. f1g2 Praggnanandhaa continues in the classical spirit. 8... d7d5  9. e1g1 