[Event "Ragger-Mamedyarov m 2015"] [Site "Vienna AUT"] [Date "2015.08.17"] [Round "1"] [White "Mamedyarov, S."] [Black "Ragger, M."] [Result "1-0"] [ECO "C69"] [WhiteElo "2735"] [BlackElo "2688"] [Annotator "Kuzmin"] [PlyCount "51"] [EventDate "2015.08.17"] [EventType "match"] [EventRounds "6"] [EventCountry "AUT"] [SourceTitle "The Week in Chess 1084"] [Source "Mark Crowther"] [SourceDate "2015.08.17"] [SourceVersion "1"] [SourceVersionDate "2015.08.17"] [SourceQuality "2"] {[%evp 0,51,29,35,22,15,15,-1,29,29,29,29,33,29,18,31,52,17,19,27,53,61,61,34, 34,51,55,57,25,25,37,38,38,29,104,104,119,127,112,112,112,118,149,153,231,237, 321,307,386,386,395,386,395,379]} {Test 66 in Part I ("Beginning to Think Like a Grandmaster") of Together with Mamedyarov.} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O f6 6. d4 exd4 7. Nxd4 c5 8. Nb3 Qxd1 9. Rxd1 Bg4 10. f3 Be6 11. Nc3 Bd6 12. Be3 b6 13. a4 a5 14. Nb5 O-O-O 15. Nxd6+ cxd6 16. Nd2 d5 17. exd5 Bxd5 {[#]} 18. b4 $1 {An unexpected undermining happened and Black's pawn structure falls in ruins. Those who found it gain 4 points.} ({Preparing with} 18. c3 {allowed Black to organize counter play} Ne7 19. b4 Bc6 $1 {with the idea of Nd5.}) (18. Re1 {hampered Black's development but after} Nh6 19. Bxh6 gxh6 20. Rad1 Rhe8 {White has a minimal edge only.}) 18... axb4 19. a5 $1 bxa5 20. Bxc5 Nh6 21. Rxa5 Rhe8 $2 ({After} 21... Bb7 22. Bxb4 {White has an extra pawn. Now Mamedyarov wins an exchange.}) 22. Bb6 $1 Rd6 23. Nc4 $1 Bxc4 24. Rxd6 Re1+ 25. Kf2 Re2+ 26. Kg3 {Having no piece support even a reliably looking pawn chain can crumble like a house of cards.} 1-0