Tuesday, November 4, 2008

Capablanca Making It Look Easy

I've been working on Alekhine's tournament books for NY 1924 and Nottingham 1936. I've finished the first, but am still adding the annotations to my "Master Games" database (a real pain, because all the annotations are footnotes, so there's a lot of page flipping involved). I'm about halfway through the Nottingham book.

I keep finding that it's the little details that I find the most interesting. I don't retain much about the games as a whole, even if it won a brilliancy prize. Yet Alekhine can mention in a footnote "This move loses a tempo", and I can appreciate how such minor inaccuracies can lead towards a loss.

Similarly, I'm once again impressed by the elegance of Capablanca's endgames, especially against weaker players. One of my favorite chess books was Capablanca's Best Chess Endings by Chernev. If there is one player's style I would most like to emulate, it's Capablanca's ability to accumulate advantages and then win the endgame. A lot of the moves in these endgames feel natural, or even simple.

Here is a snippet from the game Thomas-Capablanca, Nottingham 1936, after White's 25. a4?



White's last move has weakened the b-pawn, and Capablanca proceeds to nail it down as a weakness:

25...Bxd4 My instinct would have been to retain the bishop, because there will be play on both sides of the board. Fritz seems to want to keep the bishop as well. 26. Rxd4

Alekhine gives 26.cxd4 Re1 27. Kg2 Rxf1 28. Kxf1 Ke7 29. Rc3 Kd6 30. Rc5 Rb8 31. Ra5 Rb6, which completely ties White up.

I looked briefly at 27. Rxe1 (instead of Alekhine's 27.Kg2) 27... Rxe1+ 28. Kg2 Rc1 29. Re3, where the white rook cuts off the king from running to the queenside. However, Black's majority is on the kingside and it looks like Black can work on both sides of the board towards a win.

Now, however, Capablanca's crisp play nails down the new weakness:

26... c5 27. Rd2 Rb8 28. Rb1 a5



The b-pawn is a fixed weakness, whereas Black's e-pawn isn't really weak. The king will move towards the queenside and help protect it. Black's king is then well placed in the center, whereas White's king is off to the side keeping an eye on Black's majority.

Capablanca concluded by playing on both sides of the board, using both his majority on the kingside and White's weaknesses on the queenside. The game concluded: 29.Kg2 Ke6 30. Rc2 Kd6 31. f3 g5 32. Kg3 h5 33. h4 gxh4+ 34. Kxh4 Re3 35. Kg3 c4 36. b4 axb4 37. cxb4 Rb3 0-1

The "simple idea" here for me was fixing the backwards b-pawn as a weakness. However, we can see a number of other classic themes in this example: mobilization of a pawn majority; play on both sides of the board and the principle of two weaknesses; centralizing the king; control of an open file.

Saturday, October 11, 2008

Opening Archaeology

First: shortly after my last post, I dug into my settings and found that I actually am 32-bit...so at least I don't have to deal with OS shuffling. The extra computing power would have been sweet though. I'll be editing the post to fix that.

I'm going to make a new tag, "opening archaeology" for intriguing old opening ideas I come across as I'm studying collections of master games. The following Sicilian idea seems a bit dubious to me, but those that find the 2...e6 Sicilians annoying may want to look at it.

In The Book of the New York International Chess Tournament 1924, Alekhine in the footnotes of a couple games reveals that after 1.e4 c5 2.Nf3 e6 he likes 3.Be2!?



One of the ideas is that it may be possible to avoid playing Nc3 to protect the e4 pawn. In most open Sicilian lines, ...Nf6 attacking the e4 pawn is played early, which prompts White to play Nc3 and block their c-pawn. The Maroczy Bind (pawns on c4 and e4 in the Sicilian) was considered a Very Good Thing at the time.

In this case, if 3...Nc6 (or another move besides 3...Nf6--3...Nc6 is the most common in this position) 4. d4 cxd4 5. Nxd4 Nf6, now 6. Bf3 protects e4:


In theory, c2-c4 would be in the cards now. However, in Tartakower-Steiner, Saltsjobaden 1948 I see that White never got around to it: 6...Ne5 7. O-O Be7 8. b3 O-O 9. Bb2 (9.c4!?) ...d5 10. Nd2 Nxf3+ 11. Qxf3 Bb4 12. e5 Nd7 13. Qe2 Bxd2 14. Qxd2 Nxe5 15. Nxe6 Nf3+ 16. gxf3 Bxe6 17. Kh1 f6 18. Rg1 Bf5 19. Bd4 b6 20. Rg3 Rc8 21. c3 Qd7 22. Rag1 Bg6 23. Qf4 Rf7 24. Re1 Re8 25. Re3 Rff8 26. Rg1 Qh3 27. Rg3 Qf1+ 28. Rg1 Qh3 29. Rg3 Qf1+ 1/2-1/2

In case of 3... Nf6, Alekhine gave 4. Nc3, with the idea of 5. e5 Nd5 6. Nxd5 exd5 7. d4. I started looking at sample lines, and it doesn't seem that simple, but Fritz is giving White a nice edge. I'll leave it to the reader to explore those variations.

I'm unconvinced by the idea of putting the bishop on f3 behind the e4 pawn, and in a few of the games I looked at this indeed became a problem if the pawn remained there. Also, to me the most testing response to 3.Be2 is 3...Nf6, where White ends up playing 4.Nc3 anyways. However, it seems playable, and I think the odds are your opponent would not have looked at these lines.

Sunday, September 28, 2008

64-Bit Vaio Ships With 32-Bit Windows?

{Edit: although it seems from my googling that this has been an issue with some Vaios, it is not with mine...I received a 32-bit comp. Disregard, but thanks for all the input!}

It seems that my Sony SR should be able to run the 64-bit version of Visa, but ships with the 32-bit. Grr.

I'm only an average computer user, so it's not clear to me yet how easy it'll be to solve this problem. My understanding is that when installing a new OS you want to wipe the hard drive clean, but then I'd lose all the stuff that came pre-installed. It looks like I can get a physical copy of the 64-bit OS from Microsoft for a nominal fee, but I've read that installation on Vaios can be problematic because of the Sony drivers.

I'll be phoning various Sony and Microsoft tech help in the next few days to try and find a solution. Until then: if you're ordering a 64-bit computer and want the 64-bit OS, you should check and see which version comes pre-installed.

Saturday, September 27, 2008

New Toy

I received my Sony Vaio SR laptop today. So far, so good. I've managed to put ChessBase 9, Fritz 9 and CT-ART on it and test them out. The latter two required some googling to figure out how to get them to work in Vista, but everything seems to check out so far. I'm not looking forward to transferring the 4 GB of endgame tablebases over.

Fritz 9 is running at over double the kN/s on the laptop. I'm tempted to try playing my two computers against each other and see how the laptop stacks up.

I've started to shop around for Rybka. I'm interested in picking up other free engines that I can pit against each other in engine tournaments. If anyone has some favorite engines, feel free to share your thoughts.

Tuesday, September 23, 2008

Brief Update

I'm still alive, but I've been distracted by other things. For much of the fall I have to work when the local chess club meets. Lately I've been slowly plugging away at collections of old master games, but haven't had any "Aha! this would be good blog material!" eureka moments.

I've ordered a laptop for work and for play, so I expect once it arrives I'll be spending more time organizing material and training. I would be very interested in hearing from people how the new Rybka 3 stacks up to the previous release. Until now, I've been using my old Fritz 9, but I've been hearing "Rybka says this, Rybka says that" for a long time now.

I'd also like to hear if anyone feels that it is worthwhile to upgrade from Chessbase 9 to Chessbase 10. I haven't heard a compelling reason to do so yet...although if it's easier to keep your reference database up-to-date that alone may be worth the price. Currently I do the online updates that download TWIC files...but I tend to put it off and have to manually search their archives. Either way, I still have to cannibalize each TWIC and incorporate into my reference DB.

I have no illusions that new engines or database software will translate directly into better chess skills...but as a hobbyist I enjoy what these programs can do. For example, I'm interested in the use of engine tournaments to assess various positions, as described in Nunn's Secrets of Practical Chess. However, all I really have are Fritz 9/7/5 engines at the moment, which strikes me as incestuous. I've tried a few free engines such as Crafty, but they've caused crashes when trying to run engine tournaments.

Any thoughts on Rybka 3, Chessbase 10 or other nifty software?

Tuesday, August 5, 2008

Spot the Back Rank Weakness

Even though (if you're at all like me) we still fall prey to "simple" back-rank weakness tactics, I think these tactics are sometimes dismissed as obvious, beginner cheapos. However, these motifs can be quite deeply concealed. The following example from Marshall-Alekhine, NY 1924 caught my attention:



20...h6. Alekhine: "It was surely disagreeable to deprive the Rook of the control of h6, and yet there appeared to be no other way of preparing for Rf6 (20... Rf6 21. Qxe4 Qxe4 22. Nxe4 Rxe4:



23. Rxd5." Of course 23...cxd5?? 24. Rc8+ and back-rank mate to follow. It's not hard to calculate this forcing line, but you'd have to look pretty carefully at the first diagram to see that there was a potential back-rank weakness and that making luft with ...h6 was a good idea. Besides being a good example of calculating a forcing variation, this is also a good example of playing "real chess" a la Heisman: "What can my opponent do after I make the move I want to make?"

To add a dose of humility, I'll conclude with a recent blunder of mine from a blitz game:


I had actually made luft with ...g6 seven moves ago, to hopefully thwart back-rank problems. In time trouble I played 29...Rcc7??, hoping for something like 30.Bxc5?? Rxc5 31.Rxc5 a2 -+.

However, to my opponent's credit, he almost immediately whipped out 30.Bh6! Ke8 31.Ra8+ 1-0.

Saturday, August 2, 2008

Was Alekhine Unaware of the Noah's Ark Trap?

The Noah's Ark trap refers to the following tactic that can be found in lines of the Spanish. After, for example, 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. d4 b5 6. Bb3 Nxd4 7. Nxd4 exd4 8. Qxd4?



8... c5! 9. Qd5 Be6 10. Qc6+ Bd7 11. Qd5 c4 -+ traps the bishop.

Yet, in a footnote to Yates-Alekhine, NY 1924, Alekhine says {note: I'm converting the notation to algebraic} "...White, after 5.d4, must reckon with either choosing an immediate drawing line (5...b5 6.Bb3 Nxd4 7.Nxd4 exd4 8.Qxd4 c5 9.Qd5 Be6 10.Qc6+ Bd7 11.Qd5 Be6 = {instead of 11...c4!-GP}), or being forced to embark upon a doubtful sacrificial variation beginning with 8.c3".

My understanding was that the Noah's Ark Trap gets its name from its antiquity. Yet I see that even 6 years after Yates-Alekhine was played, Steiner used this line as White against Capablanca (unsuccessfully).

Were the masters at the time of the NY 1924 tournament actually unaware of this trap, or am I missing something?