Ivanchuk, Vassily - Ni, Hua
Moscow Aeroflot op-A



1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 b5 9.Nd5 Qa5+ 10.Bd2 Qd8 11.Bd3

[ 11.c4 ]
11. ... Nxd5 12.exd5 Ne7 13.c4 g6 14.cxb5 Bg7 15.O-O A better pawn structure and open files for his pieces provide Black with sufficient compensation for the pawn. 15. ... O-O 16.Bb4N Ivanchuk correctly wants to organize pressure on d6. White must not let Black to develop freely his initiative. 16. ... a5
[ Serious attention deserved 16. ... Nxd5 17.Be4 Nxb4 18.Bxa8 d5=/& [%csl Ra8][%cal Gc8e6] ]
17.Bc3 Nxd5
[ According to M.Notkin correct was 17. ... f5 "though with the bishops on c3 and d3 White is much better equipped to meet the plan carried out by Sriram (see 16.Bc4 - DR) since f5-f4 gives the e4 square to the light-squared bishop while after e5-e4 the dark squares in the Black's camp would be weakened. Nevertheless Black has useful moves at his disposal (Bb7, Rf7, Rc8) and the central advance can wait until an opportune moment as White needs time to regroup for active operations" (M. Notkin) Everything is right, only that I believe that 17...Nxd5 also offers Black enough possibilities for counterplay. ]
18.Qf3 18. ... Nb6? Black wants to advance the d-pawn, but unfortunately for him the concrete play favors White. 19.Nc4! 19. ... Be6 20.Bxa5! 20. ... Bxc4
[ Probably Black should have tried his chances in the following variation: 20. ... Rxa5 21.Nxa5 d5 although after 22.Nc6 White has good pieces and Black's compensation is not sufficient. ]
21.Bxb6 Qxb6 22.Bxc4 A pawn up and a better bishop secures White a huge advantage. Ivanchuk easily converts it into a full point. 22. ... Rac8 23.Qb3 e4 24.a4 Bd4 25.a5 Qc5 26.Bd5+- Rce8 27.Qc4 Qxc4 28.Bxc4 Re5 29.b6 Rc5 30.Ra4 d5 31.Be2 Be5 32.a6 Rc2 33.a7

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