| Mar-28-12 | | nummerzwei: 9...b5!? |
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| May-15-18 | | Howard: The KIA may be a passive type of opening for White, but it can still pack a powerful punch. Often, Black gets overconfident when trying to attack White's conservative setup. |
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| Nov-05-20 | | stacase: Best move 24.e5 discovers an attack on Black's Rook & prevents a future double attack on White's d4 Knight. |
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| Nov-05-20 | | Walter Glattke: Don't understand, I think for 24.dxe7 Re8 25.Rd1 Re8 26.Nc7 peculiar moves they played. And weird position in the start diagram. The bishops are rook cleaner after my moves. |
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Nov-05-20
 | | al wazir: Okay, I'll bite.
Why didn't black play Bxa1 ? It was there for three moves. |
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Nov-05-20
 | | An Englishman: Good Evening: <al wazir>, ...Bxa1 might or not be sound; the "history" of the sacrifice (for lack of a better word) might have deterred Black. The sacrifice occurs frequently in the Grunfeld, where White's center and Black's weak dark squares give the first player compensation. White could follow with Bh6 and Qd4, for example. However, the possibility exists that White might have pulled off a bluff. For that, we need the silicon monsters to decide. |
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| Nov-05-20 | | Brenin: I first saw 24 e5 as attacking the R on a8 and protecting the N on d4 from 24 ... Bxd4, and soon realised that the sac of the exchange on e1 would be returned with interest, in the form of the d and e pawns crashing through Black's position. As <Howard> wrote, the KIA (of which Movsesian is a great exponent) is deceptively strong. |
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| Nov-05-20 | | Walter Glattke: I see, 24.dxe7 brings 24.-Bxd5! 25.exd8+ Rxd8 26.Qe2 (not Qd2?) Bf2+ with following knights check threatenngs, so white has 2 bishops for a rook finally by 27.Kf1 Bxe1 28.Rxe1 Nxe1 29.Qxe1, unlucky continuation, so they played 24.e5. |
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| Nov-05-20 | | saturn2: I took 24 e5 Nxe1 25. Qxe1with possible follow up 25..Nf5 26. Nxf5 gxf5 27. Rxb4 Qxa2 28. Bxa8 Rxa-
8 It is not much of a combination but more a favorable exchange
Anyway the position with the strong d6 pawn looks won. |
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| Nov-05-20 | | saturn2: 25 Rxe1 is necessary. Otherwise white cannot play dxe7 and black saves the rook a8 |
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| Nov-05-20 | | agb2002: White has the bishop pair for a bishop and a knight. Black threatens Nxd1, Nxf4, Qxa2.
After 24.dxe7 Rxd4 Black still has several threats and the pawn on e7 becomes more a weakness than an asset. This suggests 24.e5, with the threats Bxa8 and e6: A) 24... Nxe1 25.Rxe1
A.1) 25... Nf5 26.Nxf5 gxf5 27.Bxa8 Rxa7 28.e6 fxe6 29.Qxe6+ seems to win (29... Kh8 30.d7; 29... Kf8 30.Qe7+ Kg8 31.d7). A.2) 25... Rac8 26.dxe7 wins some material.
B) 24... Nf5 25.Nxf5 gxf5 27.Bxa8 Rxa8 28.e6 as above. C) 24... Rac8 25.dxe7 Re8 26.Red1 wins decisive material. |
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| Nov-05-20 | | mlskdney: if the pawn takes the knight then the player with black pieces has to act and there is no check |
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| Nov-05-20 | | Walter Glattke: I am not sure for 24.dxe7 Rxd4 by 25.e5 both rooks are attacked then. 25-Nxe1 26.Rxe1 (26.Qxd5? Nxf3+) Rxf4 27.gxf4 Rb8 28.Qc5/Rc8 Bb7 Re8 28.Qc5 I think 24.-Bxd4 with only little white advantage was better, but not as good as 24.e5 in the match. |
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| Nov-05-20 | | woodenplayer: Hello, <al wazir>. <An Englishman> is substantially correct. I (and the silicon beast) looked at a number of possible continuations. Black's position is "loose" on the Queenside. a4 causes problems, even in the least bad scenario for Black winning Black's b5 pawn while continuing to threaten mating attacks. White also has Bg5 pinning Black's Ne7 and building pressure on f6. If Black pre-emptively blocks Bg5 he further opens his king's position. White seems to end up with the Bishop pair against Black's awkward Knights, one or a pair of connected passed pawns, and often wins back the exchange with continuing threats to Black's king. Actually kind of amazing; not something I could envision in the initial position. |
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| Nov-05-20 | | saturn2: <Walter Glattke
24. dxe7 Rxd4 25. e5 Nxe1 26. Rxe1 Rxf4 27 gxf4 >
After instead <27. Bxa8> I think black is lost |
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| Nov-05-20 | | Walter Glattke: 27.Bxa8 Rf5 28.e8Q+ Qa4xQe8 I also testd 26.-Rd3 27.Qe4 Re8 28.Bg5 h6 29.Bf6 Rxf3 30.Qxf3 with following Qf6, but the sudden death in the match is even stronger, , I like to analize OTB, but stockfish has more plays in seconds, the metal brain can better clear complicated situations. |
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| Nov-05-20 | | Brenin: If 24 dxe7 then 24 ... Bxd4 is much stronger than Rxd4. A typical continuation is 25 exd8=Q+ Rxd8 26 Qe2 Bxf2+ 27 Kh1 Bxe1 28 Rxe1 Nxe1 29 Qxe1 Qxa2, leaving Black with three connected passed Ps in compensation for having R vs 2B. |
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| Nov-05-20 | | scruggs: Where is Chris |
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Nov-05-20
 | | Breunor: To answer the earlier question, Stockfish does recommend 20 .... Bxa1. Score is 1.16, after the actual .... b4 21 Rab1 score is 1.79. |
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| Nov-05-20 | | TheaN: Late nighter for me this one, and I had the feeling <24.e5> was necessary due to the threat on d4, after <24....Nxe1 25.Rxe1 +-> White controls the board even though he's temporarily an exchange down. Didn't analyze everything through but I'll take it. |
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| Nov-05-20 | | saturn2: .<Brenin 24 dxe7 Bxd4 25. exd8=Q+ Rxd8 26. Qe2
Bxf2+ 27. Kh1 Bxe1 28. Rxe1 Nxe1 29. Qxe1
Qxa2
leaving Black with three connected passed Ps > Good point, even if there remain only two disconnected pawnsx after 30. Qxb4 |
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Nov-06-20
| | al wazir: <An Englishman> and <woodenplayer>: Thanks. As a general rule, nowadays we can expect that *every* possible sequence in the first ~20 moves has been analyzed with engines. And we all know that they can deliver some surprising lines. But can a human being learn them all and remember them? Maybe Panarin had reason to expect that Movsesion would play this opening and therefore boned up on it. However, 1. e4 c6 2. d3 5 3. Nd2 g6 is an unusual way to start a "King's Indian attack," let alone a Gruenfeld. Could he really have anticipated the ♗ attack on the ♖? |
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Nov-07-20
| | An Englishman: Good Evening: <al wazir>, humans can’t learn all the lines, but we do have the power of pattern recognition. Never played the Grunfeld, never even studied it, but did analyze one of the first, if not the first, games where the sacrifice occurred. |
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Kibitzing
sac: 24.e5