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Alexander V Filipenko vs Fabian Lipinsky
5th HIT Open (2000), Nova Gorica SLO, rd 9
Sicilian Defense: Richter-Rauzer. Classical Variation (B63)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Given 29 times; par: 32 [what's this?]

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sac: 24...Rxa2 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 3 ·  Later Kibitzing>
Dec-26-07  UdayanOwen: I've got a funny story for everybody....

Some of you would have seen the Spassky-Beliavsky puzzle on Sunday. Others wouldn't have because they soon replaced it with the Nunn puzzle because they reallized it had been a puzzle a month earlier.

Anyway, I was supposed to be taking a day off chess that day after 13 days straight of doing 4-8 hours of chess a day. I was going to allow myself a quick look at the puzzle of the day, without trying to solve it (as a good addict would do...). However, after glancing at the Spassky-Beliavsky puzzle for a few seconds, as I should have predicted, I quickly got sucked into trying to solve it...

Anyway, I set up the position on a board (which I like to do because it is more of a game condition training, with real pieces to look at... for anyone who doesn't know, this actually is better for your chess [there are psychology studies to support this], as long as you don't get tempted to move the bits around, which will inhibit the development of those all important visualisations skills).

Then I spent more time analyzing that position than I have spent analyzing any on this forum, and I wrote it all down as a post, my longest post ever, so many amazing variations.... Took me hours

I thought I had seen EVERYTHING... This was going to be my masterpiece...

Anyway, as it turns out, when I see the puzzle on the home page, I have a problem with my screen... it is quite dark, and it is hard to see the black pawns on dark brown squares.... and yes, the puzzle I analyzed for so long, and worked so hard to write up with every nuance, was missing one of the black pawns. No, not the irrelevant a6 pawn... The e5 pawn, which completely changed the nature of the position and ruled out most of my variations (although not the first few moves and the overall winning plan). In fact, the win was a lot simpler in the actual game position!!!

I only realised this when after posting my analysis, and feeling chuffed with my effort, I had a look at the game to check if my analysis was correct. And of course, then I had no trouble seeing the black pawns on the green squares they use on the interface used for the game itself!!

Naturally I quickly deleted my analysis.... So much for my masterpiece

Dec-26-07  Chesstalesfan: Dzechiel it does nt matter. Your line of 27 Ra3 bxa3:what can white do now. White plays now 28.Ne3. If 28..axb2 29.Nd5+ K? 30.c4
Dec-26-07  goodevans: Feeling fairly chuffed coz I saw it all pretty quickly, including <Dr. J>’s recommended 26 Ra3 bxa3 27 b3, against which 27 … Qc3 looks pretty decisive. Also against 27 c3 I reckon the immediate 27 … b3 is quicker than the 27 … Qa2+ given in his analysis.
Dec-26-07
Premium Chessgames Member
  triangulation: got ithis one easily. full marks for me this week.
Dec-26-07  Alphastar: the only combination in this position can be the line-opening

1. ..Rxa2!
2. Kxa2 Ra8+
3. Kb1 (if 3. Kb3, 3. ..Qa5, 4. ..Qa4+ 5. Kc4 Rc8+ etc.) Qa5 and now I believe white's only serious chance is 4. c4, because 4. c3? b3! doesn't help.

4. c4 Qa2+!
5. Kc2 Qxc4+
6. Kb1 (Rc3 Qxe2+ etc, or Kd1 Qc1#) Qc1#.

seems conclusive enough. Time to check if there are any holes in my analysis.

---

no holes. I can claim this one fully, I guess.

Dec-26-07
Premium Chessgames Member
  cu8sfan: Theme of the week: Pry open the h-file, sac, sac, mate.
Dec-26-07  Creg: For what ever reason blacks bishop on h6 stood out to me. I also noticed the puzzle to be a Sicilian structure, thus the following things registered for me.

1. White castle queen-side in Sicilian, open A-file, black must attack. 2. Many years of seeing Sicilians I am accustom to white having the c1 square as a flight square, not in this case, nor is the flight square always advantageous, but in this case it limited whites options making the line a bit easier to find.

Rxa2 jumped out as the #1 candidate move, and once I saw the follow up of Qa5+ (after white takes at a2) I can see the end is near.

There are many lines one can look at, but once black infiltrates white is in a lot of danger, whether he takes the rook or not. Granted in OTB I would make sure one or two main lines play out, and only then make the sacrifice, but when it's a puzzle I'm usually happy just to find the main theme.

Dec-26-07  mistreaver: i was thinking about 24...Rxa2 but couldn't see the follow up :(
Dec-26-07  znprdx: Reading some of the posts, I see eggnog overflowing...

<Chesstalesfan:&fictionist:> 25.Ne3 is too little too late. Bxe3[N] 26.Qxe3[N] Qxc2+ 27.Ka1 Rxa1+ 28.Kxa1[R] Ra8+ 29.Qa7+ Rxa7[Q]#

What makes the immediate ...24.Rxa2 difficult is to see that 27.Ra3 cannot hold the position which I thought, so started looking at ...24.b3)

BTW 24... Rxa2: 25 Kxa2 Qa5+ 26.Ra3 b4xa3[R] 27. b3 <Dr. J: (not 27. b2xa3? Rc3) Now what?> simply ...Qc3 :)

Black's control of the black squares is overpowering.

Even if White had played 24.Ne3 as probably envisioned, an amusing variation is ....24.Qa7 25.Nd5+ Kf8 26.White is in zugswang.

Dec-26-07  micartouse: <dzechiel: I stand corrected! Of course white can play 27 c4, I have no excuse as to why I didn't see this move. <sigh>>

Maybe because in situations like this, one subliminally rules out 27. c3 b3 which doesn't help White a bit. But 27. c4 so the rook can capture the b-pawn ... I just didn't account for that.

Dec-26-07  alphee: I got this one easily and it seems white does not have any saving moves after 24..... ♖xa2, at least among the ones I tested eg: 24.... b3 or ♖a3
Dec-26-07  DarthStapler: I didn't see it either, Dzechiel. My solution was pretty much the same as yours.
Dec-26-07  VaselineTopLove: Similar to Ivanchuk-Anand from Linares 1998!
Dec-26-07  xrt999: <dzechiel: I stand corrected! Of course white can play 27 c4, I have no excuse as to why I didn't see this move. <sigh>>

d, as usual Im not following your logic! (This is a compliment by the way)

27.c4? is a horrible move, it just loses immediately, whereas 27.Ra3 interposes the rook and leads to a complex position. If black does not play perfectly there is a possibility of a perpetual.

I plugged 27.Ra3 into my engine (I also picked 27.Ra3) and the game went on for another 10 moves after 27.Ra3 bxa3 28.c3 Bc1! before white succumbed.

27.Ra3 is better than 27.c4; why are you seemingly beating yourself up because Filipenko played the inferior move?

Dec-26-07  blair45: <Funicular:>
<BTW (i'd like to see many replies to this one) do you open the game and go forward till the moment before the move to be guessed is played? (of course without seeing the move, just focusing on the board, as it's bigger you see it better) or do you reproduce the position in a real board? how do you do?> I like to play up to the diagramed position. If I haven't solved it by looking at the diagram,I try one final time. I believe that playing over the game helps me with my openings and gives me some insight into the player's strategy. Black's bishop at h6 is the real killer here.

Dec-26-07  xrt999: this would actually be a great puzzle after 27.c4, its mate in 6 for black!
Dec-26-07  MaxxLange: I wound up rejecting 24...Rxa2 because I didn't see a clear win against 25. Kxa2 Qa5+ 26. Kb3. Probably 26...Ra8 busts that defense, but, that and other complications led me to just give up and check the game score.
Dec-26-07  YouRang: Like <dzechiel>, I missed 27. c4, and thus the play required to win in that line.

I considered 28. c3, after which 28...b3 seals off the mate. I must not have thought that c4 made the difference.

It shows how careful one must be before launching a sac attack.

Dec-26-07  YouRang: <xrt999> I would agree that 27. Ra3 is better than 27. c4, but you don't want to be surprised by a response you didn't consider after investing a rook sac.

Obviously, black gets his rook back after 27. Ra3 bxa3, but black's Q+R+B+P attack on the weakly defended white king's position will be too much to withstand.

Dec-26-07
Premium Chessgames Member
  kevin86: Nice finish! The mate threats are lethal along both a-and c files. This is mate-around-the corner.
Dec-26-07  zenpharaohs: "Anyway, as it turns out, when I see the puzzle on the home page, I have a problem with my screen... it is quite dark, and it is hard to see the black pawns on dark brown squares.... and yes, the puzzle I analyzed for so long, and worked so hard to write up with every nuance, was missing one of the black pawns."

That's not as bad as my not remembering the correct player to move. I know what you mean about the black pawns on brown though. I have that problem with some programs and I have nothing wrong with my screen. There is a reason you want black and white pieces on green and beige squares.

Dec-26-07  chessmoron: Visit my forum PROFILE for a <NEW CHESS PUZZLE> if you are done with this puzzle of the day.
Dec-26-07  Dr. J: <goodevans> and <znprdx>, you are of course correct that 26 Ra3 bxa3 27 b3 is refuted by Qc3. This suggests that White's best is 26 Ra3 bxa3, 27 b4 Qxb4, 28 c3 Rxc3 when White with a naked King is already down 2 pawns, but can struggle on a little while. Yes/no?
Dec-26-07
Premium Chessgames Member
  gah: 24...b3 looks best to me, threatening bc+. If 25 ab, then Rai+ 26 Kxa1 Qa5+ 27 Kb1 Ra8 and mate next move. If 25 c3, then Rxa2+ 26 Nd2 Ra1+ 27 Kxa1 Qa5+ 28 Kb1 Qa2+ and mate next move
Dec-26-07
Premium Chessgames Member
  whiteshark: So where could white have done better ?
Maybe by keeping the a-file closed ?!

<20.Ne3 Bxe3 21.Qxe3> might be an idea...


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