Sergey Dolmatov vs Walter Browne (1990)

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Sergey Dolmatov vs Walter Browne
Reykjavik Summit (1990), Reykjavik ISL, Mar-??
Sicilian Defense: Najdorf. Opocensky Variation (B92) · 0-1

White to move.

ANALYSIS [x]

0-1

rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1

FEN COPIED

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< Earlier Kibitzing · PAGE 3 OF 3 · Later Kibitzing>
Jan-02-10		WhiteRook48: rxc3, easy, but i only calculated the bxc3 response

Jan-02-10		Once: I have either seen this one before, or the Rxc3 tactic is so common in the sicillian that I only think I know it. Mind you, I am not so sure that the sequence of trades is so much in black's favour. I mean, black gives up two rooks for queen and pawn, which does not seem an overwhelming advantage.

Jan-02-10		Eduardo Leon: I saw 24...♖xc3! 25.axb4 [25.bxc3?? ♕a2+ 26.♔c1 ♕a1#] 25...♖xc2+ 26.♕xc2 ♖xc2+ 27.♖xc2 [27.♔xc2? ♕c4+ 28.♔d2 ♗g5+ 29.♗e3 ♕d4+ 30.♔e1 (30.♔c1? ♗xe3+) ♕xb4+] click for larger view The problem is how to assess the current position. I think black had a slight advantage after either 27...h5 (giving the ♔ an escape is a priority), because of his better pawn structure, but I don't see any convincing way to improve the position. Let's see what happened.

Jan-02-10		Eduardo Leon: I meant either 27...h5 or 27...h6, although I preferred the former.

Jan-02-10		Eduardo Leon: The sequence 28.b5 axb5 29.♖d4 ♗f6 30.♖b4 let black reassert his advantage with 30...d5!, emphasizing the lack of coordination between the white ♖s and switching immediately to the offensive. But I don't see what else could white have done. Perhaps black's advantage in this position click for larger view wasn't so little.

Jan-02-10		agb2002: Material is even. White threatens 25.axb4. The black queen and the knight aim at a2. This suggests 24... Rxc3 25.axb4 (25.bxc3 Qa2+ 26.Kc1 Qa1#) Rxc2 26.Qxc2 Rxc2 27.Rxc2 (27.Kxc2 Qc4+ 28.Kd2 Qxb4+ [Q+2P vs 2R]) h6 with a difficult endgame. Another option is 24... Nxc2 25.Qxc2 (25.Kxc2 Rxc3+ 26.bxc3 Qa2+ 27.Kc1 Qa1+ draws at least) Bf6 26.Be1 b5 with the idea a5, b4. I don't know and don't have the time to go deeper.

Jan-02-10		VincentL: I come late in the day to this "very difficult" position. Well, the obvious try is 24.... Rxc3. Does this win? Let's see. White cannot capture Bxc3 or Qxc3 on account of Qa2+ followed by Qa1 mate. So. 25. axb4 I have looked at this position for a couple of minutes, and cannot see anything better than 25....Rxc2 If 26. Qxc2 Rxc2 27. Rxc2. Here there is roughly material equality (black cannot continue 27....Qxe4 on account of 28. Re1). Black has the better pawn structure - is this sufficient to win? I certainly wouldn't fancy my chances as black against best play from white. Somehow the above is following "obvious" lines - as it a puzzle, I am sure I have missed something. The first move must be different I think. 24.... Nxc2 does not lead anywhere. I cannot see anything else. I'm out of time and am going to check.

Jan-02-10		VincentL: Well, the above is the game line ! Is white's play optimal from move 28 onwards? What do the engines say? Does black win against best play from white?

Jan-02-10		fm avari viraf: The apparent move would be 24...Rxc3 since 25.bxc3 is not possible because of 25...Qa2+ 26.Kc1 Qa1# Therefore, 25.axb4 prevents the catastrophe. Now, Black can go for 25...Rxc2 26.Qxc2 Rxc2 27.Rxc2 & a ding dong battle is in offing & the pendulum of luck will oscillate between these two great players. Hence, I would not like to find the permutations & combinations of this complex game & leave to others to use their engines to reveal the finer aspects of the game.

Jan-02-10		SuperPatzer77: After 43...Qd1!, White resigns in lieu of 44. Be3 Qd5! (threatening 45...Qe5+ to win the White Bishop), 46. Rd2 Qxd2+!, 47. Bxd2 f2 (the unstoppable Black f-pawn goes queening) SuperPatzer77

Mar-21-20		geeker: I had seen this game in Browne's excellent book "The stress of chess...", game 76. Got the game line from 24...R:c3 through 27 R:c2. Browne's annotations don't give himself any exclams in that line until 27...h6!

Mar-21-20		Walter Glattke: 25.bxc3? Qa2+ 26.Kc1 Qa1#, so 25.axb3 Rxc2 26.Qxc2 Rxc2 27.Rxc2 h6 (27.-Qxe4? 28.Re1! Qxg2 29.Rxe7 Qf1+ 30.Ka2 Kf8 +-) yes, and then? Read "The stress of Chess" from Browne, I see no puzzle here, only some traps.

Mar-21-20		saturn2: White lost because because of 35 Rg4 which is a naive mate threat but loses the rook.

Mar-21-20		agb2002: Level 3.5: 52.? Lasker vs G Marco, 1900 click for larger view

Mar-21-20		sfm: This is extremely difficult. Black swaps his two rooks for White's queen and a pawn, which is materially equal. Towards the endgame this often favors the player with the rooks, who has a nice "two-against-one" scenario. Here is does not, somehow Black can not get his pieces coordinated. Playing through the game I can see what happens and post-rationalize, but figuring it out beforehand, nope.

Mar-21-20		RandomVisitor: After 21...Ne5 white has the advantage click for larger view Stockfish_20031417_x64_modern: <50/73 10:46 +0.76 22.b3 R4c7 23.Re2> h6 24.Qe1 Nc6 25.Bb6 Rd7 26.Nd5 Bf6 27.Qf1 Be5 28.Qf3 Rf8 29.Red2 f5 30.exf5 Rxf5 31.Qe2 Rf8 32.g4 Rdf7 33.Rd3 Qc8 34.a3 Ne7 35.Nxe7+ Rxe7 36.Bd4 Qc6 37.Re3 Rfe8 38.Bb2 b5 39.h4 Bf6 40.Rxe7 Rxe7 41.Qf2 Bxb2 42.Kxb2 Qc5 43.Qxc5 dxc5 44.Rd6 Re4 45.Rxa6 Rxg4 46.Rc6 Rxh4 47.Rxc5 b4 48.axb4 Rxb4

Mar-21-20		RandomVisitor: After 24.a3 click for larger view Stockfish_20031417_x64_modern: <57/88 1:15:44 -3.76 24...Rxc3 25.axb4 Rxc2 26.Qxc2 Rxc2 27.Rxc2 h5> 28.Bg3 h4 29.Bh2 Qxe4 30.Bxd6 Bg5 31.Bc7 Kh7 32.Ba5 Bf4 33.Bd8 f6 34.Ba5 Be3 35.Re1 Qd3 36.Bc7 g5 37.Bd6 Kg6 38.Bc5 Bf4 39.Bb6 Bg3 40.Ree2 Qd1+ 41.Ka2 Bf4 42.Bc5 Qd5+ 43.Ka3 Kg7 44.Rf2 Qd1 45.Ka2 Kh7 46.Bb6 Qd5+ 47.Kb1 Qd6 48.Bc5 Qd8 49.Rc3 Qd1+ 50.Ka2 Kg6 51.Rcc2 Qd5+ 52.Ka3 Qd3+ 53.Ka2 Qb5 54.b3 Qd7 55.Rce2 Qd3 56.Rc2 Qd5 57.b5 axb5 58.Bb4 Qd3 59.Bc3 Be3 60.Rxf6+ Kh5 61.Kb1 b4

Mar-21-20		scormus: <sfm .... beforehand, nope> I agree, I'm sure Browne saw the way it would go when playing ... Rxc3, and how after .... h6! he'd boss the space on the board. I remember a game I played, had a chance to be Q+p vs 2R, but declined to go that way. It ended a draw, well fought. One of the guys following the game did an engine analysis and concluded there would have been a win for me if I'd done that, after many moves.

Mar-21-20		chrisowen: Dazzle it aint my fault?

Mar-21-20		chrisowen: No washing up?

Mar-21-20		King.Arthur.Brazil: I saw the combination directly -as many- the problem really begins after 27.♖C2, now that it is very difficult. No 27...♕xe4?? 28.♖e1 win. 27...h6 (is simple and preferable). White gets free from his doubled P, Black says thanks. 28.♖d4?! This is a begin of a bad plan, which lately will cost the ♖. With 33...♗d4! white has come to zugswang position, that induced to desesperate bad moves, maybe 34.♗c1. After 35.♖g4 the ♖ will be traped. I just did the same mistake in my own games. After 36...f5! the Black obtained the advantage, but still has to fight to win, and his techinique to doing it is perfect!

Mar-21-20		RandomVisitor: <scormus><I'm sure Browne saw the way it would go when playing ... Rxc3, and how after .... h6! he'd boss the space on the board.> I saw as far as this point but was unsure if there was any advantage for black. White has some weak pawns, but I could not figure out how to 'boss the space'. click for larger view Stockfish_20031417_x64_modern: 52/91 1:28:38 -3.75 27...h5 28.Bg3 h4 29.Bf4 Qxe4 30.Bxd6 Bg5 31.Bc5 Kh7 32.Bd4 Qd5 33.Rd3 Qd6 34.Rf2 Qxb4 35.Rff3 Kg8 36.g4 Qe1+ 37.Ka2 Qe6+ 38.Kb1 Qe4 39.Bb6 Qc6 40.Rb3 Kh7 41.Rf5 Qe4+ 42.Ka1 Bf6 43.Rff3 Qc4 44.Kb1 Bg5 45.Ka2 Qa4+ 46.Kb1 Qe4+ 47.Ka2 f6 48.Rfc3 Bf4 49.Rd3 Bg3 50.Rdc3 Be5 51.Rf3 Qd5 52.Rf5 Qc6 53.Rff3 Qe6 54.Kb1 Qc4 55.Rbe3 Qb5 56.Rb3 Qa4 57.Rbd3 Qb4 58.Rb3 Qe1+ 59.Ka2 52/83 1:28:38 -3.57 27...h6 28.Bd4 Qxe4 29.Bc3 Qf5 30.b3 d5 31.Kb2 Bg5 32.Re2 h5 33.Ka2 f6 34.Bb2 Bf4 35.Rf2 Qg5 36.Re2 h4 37.Rd3 Qf5 38.Rf3 Qh5 39.Rc2 Qg5 40.Re2 Kf7 41.Rd3 Qf5 42.Rf3 Qh5 43.Ref2 Bd6 44.Re2 Qg6 45.Bc3 Kg8 46.Rfe3 Qf5 47.Rf3 Qh5 48.Rfe3 Qg6 49.Re8+ Kf7 50.R8e3 Qf5 51.Kb2 Bf4 52.Rf3 Kg8 53.Re7 Qg5 54.Re2 Kh7 55.Ka2 Be5 56.Bb2 d4 57.Ref2 Qg6 58.Re2 Kg8 59.Rd2 Qe4 60.Rff2 52/71 1:28:38 -2.52 27...Bg5 28.Be1 Bf4 29.Bd2 Bh2 30.Rf1 Be5 31.Bc3 f6 32.Rd1 Bf4 33.Re2 Qc4 34.Ree1 h5 35.Kc2 Be5 36.Rd2 Bg3 37.Ree2 Qa2 38.Rd3 h4 39.Kd2 Qb1 40.Rf3 Kf7 41.Ree3 Qh1 42.Re2 Qa1 43.Kc2 Qa4+ 44.Kc1 Be5 45.Kd2 Qb5 46.Ref2 Bg3 47.Rf5 Qc6 48.Re2 Qa4 49.Re3 Qa1 50.Re2 Be5 51.Rf3 Qa4 52.Ref2 Bg3 53.Re2 Qa2 54.Kc2 Be5 55.Kd2 Qc4 56.Ke1 b6 57.Kd2

Mar-21-20		paavoh: Saw the Rxc3 axb4 and the exchance of the Q for 2R, but how to continue. I find it very difficult to formulate a winning plan.

Mar-21-20		goodevans: I quite like this puzzle. A test of our positional judgement rather than pure tactical calculation. I guess that's why it's a weekend puzzle. Like others, I did see the first few moves (just as I did ten years ago) but I couldn't see why that was winning. No points for me today.

Mar-21-20		Pedro Fernandez: This was my analysis: 24...Rxc3 click for larger view 25.axb4 Rxc2 26.Qe1 click for larger view 26...Qb3 27.Rxc2 Qxc2+ click for larger view 28.Ka2 Bf6 29.Bd4 Qc4+ click for larger view 30.b3 Qc2+ 31.Ka3 Bxd4 32.Rxd4 Rc3 click for larger view So, when I saw the solution, there is the move 26.Qxc2 click for larger view Okay, but a 19 moves puzzle? C'mon!

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