Peter Leko X Maxime Vachier-Lagrave - Round 7.1 - 43rd Olympiad Batumi 2018 Open

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Leko, Peter2690–Vachier-Lagrave, Maxime27800–1B9043rd Olympiad Batumi 2018 Open7.1Batumi01.10.2018

1.e4 c5 2.f3 d6 3.d4 cxd4 4.xd4 f6 5.c3 a6 6.f3 e5 7.b3 e6 8.e3 h5 9.d2 bd7 10.d5 B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5 xd5 11.exd5 g6 12.e2 g7 13.0-0-0 LiveBook: 3 Games 13.0-0 a5 14.a4 0-0 15.b5 c7 16.c4 b6 17.h3 c5 18.xc5 bxc5 1/2-1/2 (49) Carlsen,M (2842)-Vachier Lagrave, M (2779) Biel 2018 13...0-0

14.g4N Predecessor: 14.b1 c7 15.g4 fc8 16.c1 a5 1/2-1/2 (44) Velilla Velasco,F (2565)-Biedermann,T (2456) ICCF email 2014 14...a5 15.a4 b6 16.gxh5 xh5 17.b5 f6 18.h4 c7 18...c8 19.h5!± xh5 20.h6 20.xh5± gxh5 21.g1 20...f4! Not 20...xh6? 21.xh6 fc8 22.c3+- 21.xf4 21.d4!? 21...exf4 22.xf4 fc8 23.e4! xa4 24.xa4 b5 25.xb5 a4 26.d4 Black must now prevent Bc6. a3 Hoping for ...Bxd4. 27.c6 bxa3 is the strong threat. axb2+ 28.d2 a2 29.b1! a5+ 30.c3! a4 31.xa4 xc3+ 32.d1 32.e2± xd4 33.d3 32...c1+? 32...xd4= and Black is okay. 33.c6 b8 33.e2+- c4+ 34.d3 xa4 35.c6? 35.h4!+- e8+ 36.f2 35...e8+= 36.f2 And now Kg3 would win. f4! 37.be1? 37.h3= 37...xe1-+ 38.xe1 h2+ 39.f1 h1+ Black has strong compensation. 40.f2 h2+ 41.f1

f6! ( -> ...Bh4) 42.d1

h4! 43.d4 g3 White is in trouble. 44.b4

b1! 45.xb1 h1+ 46.e2 xb1 47.d3 c2+ 48.f1 d2 49.e4

h4! 50.f4? 50.e2 might work better. a5 51.e4 50.xh4 xd3+ 50...d1+ 51.g2 g4+ 52.f1 f8 53.e3 f5 54.f3 g5 55.e2 55.e3 55...g4 56.g2 g6 57.h1 f6 58.e3 g7 59.g2 d8 60.b2+ h7 61.h2+ g8 62.b2 a5 Black should try 62...f5-+ 63.f2 g3+ 64.f1 h5 63.g2? 63.f2 63...b6+ 64.e2 g3 65.e1 a5 66.d3 f8 67.e3? 67.f5 h5+ 68.e3 67...b6+ Black is clearly winning. 68.d2 g4 69.c3 e3 70.c2 xf4 71.e1 e5 Precision: White = 61%, Black = 67%. 0–1

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