Seniorzy starsi w akcji, trwają mistrzostwa USA

Larry Christiansen by © James F. Perry, CC BY-SA 3.0

Dziesiątka znakomitych szachistów wystartowała w Mistrzostwach USA seniorów. My trzymamy się określenia Seniorów Starszych.

Po trzech rundach na prowadzeniu są Joel Benjamin (2506) i Igor Novikov (2554) którzy mają na koncie po 2.5 pkt.

Dwa punkty zdobyli Gregory Kaidanov (2549) i Patrick Wolff (2552).

Pozostała szóstka szachistów: Aleksander Shabalov (2528), Larry Christiansen (2567), Dmitry Gurevich (2399), Alexander Goldin (2542), Shelby Getz (2298) i Alex Yermolinsky (2486) mają po punkciku.

"Starsi Panowie" są jak wino, grają bardzo ciekawe szachy. Zobaczcie partię w której Patrick Wolff (rocznik 1968) pokonał Larrego Christiansena (rocznik 1956). Znowu triumfowała młodość😀

A, i zwróćcie uwagę na nowinkę: 11.Sb3!?

ChessBase

Wolff, Patrick2552–Christiansen, Larry25671–0B06USA-ch Seniors 20202.1Saint Louis17.10.2020TA

[%evp 16,133,14,13,28,11,14,-25,0,8,7,12,15,0,18,0,7,-8,12,0,0,0,0,0,10,0,0,0, 14,-46,31,31,26,0,83,60,143,143,143,143,142,100,100,100,195,157,151,154,230, 197,171,151,133,77,223,129,141,124,183,206,205,131,131,138,135,38,38,45,37,37, 32,23,29,32,32,32,31,33,47,26,23,23,204,167,246,97,50,37,44,0,157,165,219,210, 276,258,290,293,316,295,293,291,461,241,302,228,435,399,878,4702,2420,1836, 29962,29963,6117,1824,1240,1181,29979,29980] 1.e4 g6 2.d4 g7 3.f3 d6 4.c4 f6 5.e2 c6 6.e5 d5 7.h3 0-0 8.0-0 dxe5 8...Nb6 is the modern continuation. 9.dxe5 e6 B04: Alekhine's Defence: 4 Nf3. 10.bd2!? Exploring less charted territory. d7

11.b3!?N New and interesting. Predecessor: 11.e1 a5 12.a3 b5 13.a2 b6 14.c4 c7 15.f1 b4 16.g3 b3 17.b1 0-1 (41) Kovalenko, I (2668)-Anton Guijarro,D (2627) Almaty 2016 11...7b6 Hoping for ... Nc3!Black has an edge. 12.d3 b4 13.c5 xd3 14.cxd3 c8 15.g5 e8 16.fe1 d5 17.xe6 xe6 18.d2 c7 19.h6 h8 20.f4 d5 21.g5 White fights for an advantage. ac8 22.e3 22.ac1= 22...f6 Better is 22...g7 23.xg7 23.e6 f6 23...xg7 23.exf6 xf6 24.ae1 f5 24...xa2= keeps the balance. 25.3e2 d5 25.g3 xg5 25...b5 26.xg5± 26.xg5?! xg5 27.xg5 d5 26...d5 27.e6 cd8 28.a3 d7 29.h4 f8 29...h5± was worth a try. 30.6e5 30.xe7 xe7 31.xe7 xd3 30...f7

31.h5! f4 31...h8± 31...gxh5 32.xe7+ 32.hxg6 32.xe7 xh5 33.h4 e8 Weaker is 32.xe7 xe7 33.xe7 33.xe7 xe7 Remove Defender 34.xe7 e2+ Double Attack 35.h2 xg3= 33...xh5 32...xg6 33.h6 fd8 34.1e3 34.5e3 34...f6 34...b3± 35.e6 White should try 35.g5+- g7 36.e6 35...f5 36.xe7 xe7 36...h5± 37.xe7+- h5 38.d2 d1+ 39.e1 xd3

40.b8+ 40.f3!± 40...d8 41.e8+ xe8 42.xe8+ g7 43.e4 h5 44.h2 d6+ 45.g3 h4 46.c3+ h7 47.f5 hxg3+ 48.fxg3 aiming for Qf7+. c5? 48...h6= 49.h3 b5 49...h6 50.g4 50.f7++- h6 51.b3 51.xa7 e6+ 52.h2 e2+ 53.g1 e3+ 54.h2 f2+ 55.h3 f5+ 56.g2 c2+ 57.h1 d1+ 58.h2 e2+ 59.h3 f1+ 60.h2 f2+ 61.h3 f1+ 62.h2 f2+= 50...d1+ 51.g5 d8+ 52.h5 e8? White stays focused until the end. 52...d1+= 53.g5 d8+ 54.g4 d1+ 55.f3 55.g5 d8+ 55...d7+ 56.f5 d1+ 53.g4± Qh5+ is the strong threat. e2+

53...b4 is a better defense. 54.h3!+- Qf7+ would kill now. e8 55.xc5 e6+ 56.g4 f4+ 57.h4 g6+ 58.g3 a6 58...f7 59.g5 a6 59.f5 59.a7+ e7 60.xe7+ 60.xa6 e3+ 61.h2 f2+ 62.h1 h4+ 63.g2 xg4+ 64.f2 f4+ 65.g2 g4+ 66.f1 f3+ 67.e1 h1+ 68.d2 d5+ 69.e1 h1+ 70.f2 h2+ 71.e3 f4+ 72.e2 e4+ 73.f2 f4+ 74.g2 g5+ 75.f1 f5+ 76.e1 e4+ 77.f2 f4+= 60...xe7 61.f4 59...d6+ 60.f2 h2+? 60...g8 61.e4 f7 61.e3 g3+? 61...g1+ 62.e4 b1+ 63.d5 xf5+ 64.gxf5 h4 62.e4 White threatens Qh5+ and mate. g2+ 63.d4 g1+ 64.d5 g2+ 65.c5 White wants to mate with Qh5+. g1+ 66.b4 Intending Qf7+ and mate. a5+ 67.xb5 Av CentiPawn Loss W=15/B=388. Weighted=-16/197 1–0

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