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Grigoriy Oparin vs Samuel Sevian
"Oparin Sesame" (game of the day Sep-25-2019)
St Louis Summer B (2019), St Louis, MO USA, rd 7, Jun-25
Zukertort Opening: Queen Pawn Defense (A06)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Sep-13-19  thegoodanarchist: Oparin Sesame

https://en.wikipedia.org/wiki/Open_...

Sep-25-19
Premium Chessgames Member
  An Englishman: Good Evening: Did 15...Nb6 constitute Black's best move? White has some subtle, Catalan-like pressure, such as the possibilities of 16.Ne5 or 16.Rd1 (Black is surprisingly weak on the dark squares), but after 15...Nb6 it appears that Black had much worse chances.
Sep-25-19  Ironmanth: Some brutal and heartbreaking infighting. Nice game! Y'all have an awesome Fall day, people!
Sep-25-19  RandomVisitor: <An Englishman><Did 15...Nb6 constitute Black's best move?>

There is 15...Nb4:


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Stockfish_19091615_x64_modern:

<43/64 17:34 +0.36 15...Nb4 16.a3 Bxg2 17.Kxg2 Nd5> 18.Rac1 Rc8 19.b4 Rc7 20.Ne5 h6 21.Rxc7 Qxc7 22.Rc1 Qd6 23.Rc2 Rd8 24.h4 Nb6 25.Nf3 Rc8 26.Rxc8+ Nxc8 27.Qc2 Nb6 28.e4 Qd7 29.h5 Qd6 30.Qc3 Qb8 31.Qe5 Qxe5 32.Nxe5 f6 33.Nd3 Nc4 34.a4 f5 35.e5 Kf7 36.Kf3 b6 37.g4 fxg4+ 38.Kxg4 a5 39.b5 Nd2 40.Kf4 g5+ 41.hxg6+ Kxg6

Sep-25-19  RandomVisitor: Black had a better response to White's 26.Bxb7 pawn grab, 26...Qb8. These 2600+ players should be able to unravel the consequences of the mutual pins and double attacks and White's back rank mate threats. The missing pawn on b7 later proved to be critical:


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Stockfish_19091615_x64_modern:

<59/107 1:25:03 +0.13 27.a3 a5 28.Qb6 h6 29.h4 Rd7> 30.Qc6 Rxb7 31.Rxd6 Rxb3 32.Rd7 Rxa3 33.Kh2 Rb3 34.Rc7 Qb5 35.Qa8+ Kh7 36.Rxf7 Qd5 37.Qf8 Qe5 38.Re7 Rb4 39.Kg2 Qe4+ 40.Qf3 h5 41.Ra7 Qxf3+ 42.exf3 Rb5 43.Ra6 e5 44.Ra8 Kg6 45.g4 Rb4 46.Kg3 hxg4 47.fxg4 Rb3+ 48.f3 e4 49.h5+ Kf7 50.Kf4 exf3 51.Ra7+ Kg8 52.Kg3 f2+ 53.Kxf2 Kh7 54.Rxa5 Kh6 55.Kg2 Kh7 56.Ra7 Rb2+ 57.Kh3 Rb1 58.Ra4 Rh1+ 59.Kg2 Rb1 60.Re4 g6 61.Re7+ Kh6 62.Ra7 gxh5 63.Kg3 hxg4

59/94 1:25:03 0.00 27.h4 g5 28.a3 a5 29.Qxa5 Nxb7 30.Qxg5+ Kf8 31.Rxd8+ Nxd8 32.Qc5+ Ke8 33.b4 Qa8 34.b5 Qe4 35.e3 Qb1+ 36.Kh2 Qf1 37.e4 Qd1 38.b6 Qa4 39.e5 Qb3 40.h5 Qf3 41.a4 Qxh5+ 42.Kg2 Qe2 43.a5 Qe4+ 44.Kh3 Qh1+ 45.Kg4 Qe4+

Sep-25-19
Premium Chessgames Member
  Check It Out: One of those games that's more complicated than it seems from the outside.

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