1. e2e4  1... c7c5  2. g1f3  2... b8c6  3. f1b5 Warmerdam goes for the reliable Rossolimo Variation, avoiding deep opening theory in the Sveshnikov, Rauzer, and other sharp Sicilians after 3.d4. 3... g7g6  4. e1g1  4... f8g7  5. c2c3  5... g8f6  6. d2d4 The Dutch grandmaster gambits a central pawn. This rare move took his opponent by surprise. These days, it is often more practical to play an offbeat opening line that takes your opponent out of the book than an objectively better continuation that everyone and their cat have already studied. However, one better be sure that the sideline they've chosen doesn't backfire $1 6... c5d4 Vakhidov declines the offer after some thought, possibly recollecting his home analysis. 7. e4e5  7... f6d5  8. c3d4  8... d5c7 This move was not mandatory. 9. b1c3  9... a7a6 A novelty, although not a great one, objectively speaking. 10. b5c4 It is clear that both players were on their own at this point. This retreat is less to the point 10... e8g8  11. c1g5 Playing this aggressive move is not the wisest decision White could make. 11... d7d6 White has no choice but to capture on d6 now. He plans to put pressure on the e7-pawn with d4-d5, Re1, etc. However, Black obtains a lot of counterplay against his isolated queen's pawn in return. 12. e5d6 