Showing posts with label Spassky (Boris). Show all posts
Showing posts with label Spassky (Boris). Show all posts

05 December 2014

Analyzing Variations

Lesson of the Week

My chess students range from beginners struggling to remember how all the pieces move to several of the top local scholastic competitors. In a club for beginners this week, I worked with most of the students individually on checkmate with queen and king against a lone king (see "Teaching Elementary Checkmates").

My other students--both those receiving individual lessons and those in groups--were presented with a variety of positions that might have occurred in actual games. A few were also shown a portion of a game from the 1969 World Championship between challenger Boris Spassky and Tigran Petrosian.

Many students saw two positions that might have resulted in the first match game between Louis Charles de la Bourdonnais and Alexander McDonnell (see "Three Fighting Draws" for the whole game).

Black to move
After 46.Nxe7
Could White have preserved the draw after 46.Nxe7 instead of the move he played in the game?

This variation might have led to the following position.

White to move

Can White prevent Black's pawn from becoming a queen?

Several students were shown the entire game Mayet -- Anderssen, London 1851.*

1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc4 4.c3 Nf6 5.Bxc6 dxc6 6.O-O Bg4 7.h3 h5 8.hxg4 hxg4 9.Nxe5 g3 10.d4 Nxe4 11.Qg4 Bxd4 12.Qxe4 Bxf2+

The game may have ended here, or been played one move longer, or even all the way until checkmate.

White to move
After 12...Bxf2+

Those who were shown this game went through it repeatedly, looking for improvements. First, efforts were made to find where White's position became hopelessly lost and to suggest alternatives. Then, efforts were also made to find improvements for Black.

One group and several individuals were shown the final portion of Spassky -- Petrosian 1969.

Spassky,Boris V -- Petrosian,Tigran V [D41]
World Championship 27th Moscow (5), 23.04.1969

1.c4 Nf6 2.Nc3 e6 3.Nf3 d5 4.d4 c5 5.cxd5 Nxd5 6.e4 Nxc3 7.bxc3 cxd4 8.cxd4 Bb4+ 9.Bd2 Bxd2+ 10.Qxd2 0–0 11.Bc4 Nc6 12.0–0 b6 13.Rad1 Bb7 14.Rfe1 Rc8 15.d5 exd5 16.Bxd5 Na5 17.Qf4 Qc7 18.Qf5 Bxd5 19.exd5 Qc2

White to move

The most important element in this position is White's passed d-pawn. In Chess.com's Chess Mentor, this position is presented with guidelines for handling such pawn. I communicated these ideas to the students.

1) control the square in front of the pawn
2) trade off minor pieces
3) keep the queens on the board to prevent the defending king's activity
4) keep at least one rook

The player defending against such a pawn, of course, hopes to trade queens, blockade the pawn with a minor piece, and activate the king. The Chess Mentor lesson focuses on White's side of things in this struggle and does not elucidate the defensive ideas.

20.Qf4 Qxa2 21.d6 Rcd8 22.d7 Qc4 23.Qf5 h6 24.Rc1 Qa6 25.Rc7 b5 26.Nd4 Qb6 27.Rc8

The Chess Mentor lesson ends here.

27...Nb7 28.Nc6 Nd6 29.Nxd8 Nxf5 30.Nc6 1–0



*The Oxford Encyclopedia of Chess Games (1981) presents this game as Berlin 1859 with the source as The Chess Monthly (1882). In that publication, however, it is stated that the game was played during the International Chess Tournament, London 1851. Mayet and Anderssen did not play each other in that tournament, but all of the participants played many non-tournament games with one another during the course of the event.

09 April 2012

Lesson of the Week

Grandmaster Tactics

The core lesson for my scholastic chess teams this week comes from a game played in 1962: Spassky -- Evans. The entire game, and thus the answer to the exercise, can be found at "Instructive Games Worthy of Memorizing."

Find Boris Spassky's move from this position. He played the strongest move.

White to move

A second chess problem may be needed in certain groups. It comes from the final position in Carlsen -- Wang, Wijk aan Zee 2011. Wang Hao resigned. How might Carlsen continue if, instead of resigning, Wang had played 29...gxf6? The entire game, but not the answer to this problem, is at "Carlsen -- Wang Hao, Tata Steel 2011."

White to move

29 March 2012

Instructive Games Worthy of Memorizing

Choosing to memorize whole chess games demands identifying games with instructive value. The miniatures that I committed to memory last week are useful to the chess teacher who works with beginning players (see "Memorizing Chess Games"). They are of less value to my objective of making Expert (see "Breaking Through 1900!"). Consider the most important elements in a brief game that I played during the course of a single minute during lunch a few months ago, and have been able to replay ever since. To this day, I have not checked my analysis with an engine. It was an entertaining disaster for White in a three minute blitz game.

Internet Opponent -- Stripes
Chess.com 2012

1.e4 e6 2.f4 c5 3.Nf3 Nc6 4.d4 cxd4 5.Nxd4 Nf6 6.e5 Ne4 7.Bd3 Qh4+ 8.g3 Nxg3 9.Nf3

Black to move

9...Qg4? 10.hxg3? Qxg3+ 11.Ke2 Qg2+ 12.Ke3 Bc5+ 13.Ke4 f5+ 14.exf6 d5#

Black should have played 9...Qh3 when the knight remains safe. After 9...Qg4, White should have played 10.Rg1!

It was a fast game, and I have not analyzed it in any depth. Likely, there is an improvement that I have overlooked. It serves to illustrate the en passant rule, to show the danger to a king drawn into the middle of the board, and to illustrate the sort of mating attack that often presents itself in games of weak players. Memorizing this game required no effort. I played it at lunch on my iPad, saved it to tChess Pro, and showed it to a group of elementary school students an hour later. It has remained lodged in my memory since because I have shown it to others.

What elements give this game instructive value?

1) The truth of the position. Both players made errors. Perhaps the diagram position is worth knowing because the next move was Black's most significant error, which was followed by White's missed opportunity to use a pin to win material. Does Black have a clear advantage before 9...Qg4? Does White gain the upper hand after the unplayed 10.Rg1?

2) Tactical motifs. The queen's attack along the e1-h4 diagonal can occur in many positions, and it particularly effective when supported by a knight. White's knight is also a factor that often refutes such attacks.

3) Opening ideas. The game began as a French Defense, but quickly transposed into something resembling the Sicilian Grand Prix Attack. Was 6.e5 a useful move for White?


Process of Memorizing

Many games of fifteen moves or less can be memorized with minimal effort. Even players who claim they have never memorized an entire game can demonstrate Fool's Mate and Scholar's Mate. Legall de Kermeur's only recorded game should present no difficulty for the average player. My process in rereading Chernev's 1000 Best Short Games of Chess is a slightly more difficult exercise, but not onerous. It is an exercise in translation. I read through a short game in descriptive without reference to a chess board, close the book, and then play through the game on a board. Later, I write the game in algebraic notation without looking at the board.  In the 1970s I played a few blindfold games using English Descriptive Notation, but have become rusty in its use since learning Algebraic Notation in the early 1990s. With Chernev, I am honing my reading skills in the ancient language that exists in dozens of chess books on my shelf.

It is possible to memorize a game without understanding, particularly a short game. With longer games, however, the ability to play through an entire game from memory is either the precondition or it is the natural consequence of understanding the strategic features and tactical possibilities in a particular struggle between two players. Two years ago, I began an effort to identify useful whole games and commit them to memory. This effort was suspended for reasons having nothing to do with chess.

Those games that seem worthy of learning whole are the games from which critical positions have been extracted. Rashid Ziyatdinov wrote, "In Russian folklore it is said that there are 300 positions which comprise the most important knowledge which an aspiring player must acquire" (GM-RAM, 12). Lev Alburt stated something similar, "To become a strong tournament player, you must indelibly carve into your chess memory a limited number of essential positions and concepts" (Chess Training Pocket Book, 7). The terms "aspiring player" and "strong tournament player" are imprecise. My goal is specific: become a USCF Expert.

Both Alburt and Ziyatdinov stress that the essential 300 differ from one player to another. I have three books that each present approximately 300 candidate positions for my own 300: Alburt, Chess Training Pocket Book; Alburt, Chess Training Pocket Book II; and Ziyatdinov, GM-RAM: Essential Grandmaster Chess Knowledge. Ziyatdinov compares critical middlegame positions to fingerprints, "from this fingerprint, the associated game can be identified" (77). See "Fingerprints" for more discussion of Ziyatdinov's ideas.


Adding Games to the List

Earlier this week, in "Problems in the English Opening," I annotated a game that I won. White made a series of small strategic errors that led to a theoretically lost position. I have made some effort to commit this game to memory. It is not the celebration of winning a miniature from the Black side of the English that has merit, but the struggle to identify White's errors. I, too, play the English Opening. White's play must be improved so that I never find myself on the losing end of such a game.

Yesterday and today, I am reviewing the first twenty positions in Chess Training Pocket Book II. Positions 5-8 all come from the game Spassky -- Evans 1962. One position is from the actual game. Three are hypothetical positions that follow from moves that Evans did not play. Looking at the game, I concluded that the final mating attack was also worthy of knowing.


Spassky,Boris V - Evans,Larry Melvyn [E80]
Varna ol (Men) fin-A Varna (10), 1962

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 c6 6.Be3 a6 7.Qd2 b5 8.0–0–0

Black to move


This position is not uncommon, but Evans' move here has been repeated only a few times and with terrible results for Black.

8... bxc4 9.Bxc4 0–0 10.h4

Alburt's first problem is finding this move. The other there are variations involving tactical shots after  alternative moves that are worse than those played by Evans over the next few moves from this position, 15...Nh5 for instance.

10...d5 11.Bb3 dxe4 12.h5 exf3 13.hxg6 hxg6 14.Bh6 fxg2 15.Rh4 Ng4 16.Bxg7 Kxg7 17.Qxg2 Nh6 18.Nf3 Nf5 19.Rh2 Qd6 20.Ne5 Nd7 21.Ne4 Qc7 22.Rdh1

Black to move


Improvements for Black must be found before this position is reached. No matter what Black tries here, the aspiring player should have a clear plan of attack for White.

22...Rg8 23.Rh7+ Kf8 24.Rxf7+ Ke8 25.Qxg6 Nxe5 26.Rf8+ 1–0



02 March 2012

Spanish Opening, Steinitz, Bronstein Variation C76

Despite more than 50,000 online blitz games, my first game in ECO code C76 was Sunday's round 5 game in the 20th Dave Collyer Memorial tournament. I opted for the Spanish Opening (Ruy Lopez) as White. My opponent, Expert Tim Moroney, played a deferred Steinitz Defense, Bronstein variation. I was on my own without any book knowledge on move 4, a fairly uncommon experience in the Spanish Opening. Nevertheless, the game's novelty came on my opponent's move 9.

We chose an unusual move order, but ended in an opening system played with success by David Bronstein as Black in the 1950s, employed by Boris Spassky in the 1980s also with success, and in the years 2006-2008 by Shakhriyar Mamedyarov but with a negative score, although he drew Viswanathan Anand in one game. In game 22 of the 1929 World Championship, Alexander Alekhine won with Black against Efim Bogoljubov using this system.

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 Bd7 6.d4 g6

White to move

My game Sunday reached this position via the move order 1.e4 e5 2.Nf3 Nc6 3.Bb5 g6 4.c3 a6 5.Ba4 d6 6.d4 Bd7.

7.O-O is the most popular move and is the main line give in ECO.
7.Bg5 was my move, and is the other ECO line.

Bogoljubov played 7.Bg5.

That game continued 7...f6 8.Be3 Nh6

White to move

Here, Bogoljubov castled, 9.O-O. I played 9.dxe5, a move appearing in Big Database 2011 in five games.

My opponent's 9...Nxe5 rendered our game unique.

Bogoljubov -- Alekhine continued 9...Bg7 10.h3 Nf7 11.Nbd2 O-O 12.dxe5. Here Alekhine comments:
White--rightly--recognises that a further maintaining of the tension in the centre would be rather to Black's advantage and aims at simplification. The problem of the defence has been solved in this game in quite a satisfactory way.
Alekhine, My Best Games of Chess, 1924-1937 (1965), 63.
My opponent commented after our game that his opening choice must be deemed a success because he very easily achieved equality.

Had Moroney played 9...dxe5, our game would have transposed to a line with some history, including Bronstein -- Sakharov 1960, played in the 27th Soviet Championship. Bronstein -- Sakharov began with the move order 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 Bd7 6.d4 g6 7.dxe5 dxe5 8.Bg5 f6 9.Be3 Nh6.

Black's opening choice does appear to offer good prospects for equality.

I was playing for a draw with White. In the late middlegame, my opponent and I repeated a position once. Instead of extending the draw offer that I invited by this repetition, my opponent broke open the game into an endgame that made a draw unlikely. Lucky for me, he incorrectly assessed the resulting pawn endgame and I won. See "Pawn Wars" for the endgame critical position.

ECO Code is a trademark of Chess Informant

11 November 2011

Castling Queenside in the Queen's Gambit

I won my game in the Turkey Quads last night, but I was not happy with my opening. It seemed to me that Black too easily gained equality, and perhaps even had chances for the advantage. My opponent missed these chances, but lingering doubts concerning my play through the first ten moves or so haunt me. Hence, I was digging into the Encyclopedia of Chess Openings when I found a curiosity: 10.O-O-O.


A search of Chess Informants 1-103 (I need to buy the past two year's issues to bring my collection up to date) turns up two games, both embedded into ECO: Ree - Pfleger 1966 Informant 1/366, and Ftacnik - Zaw 2000 Informant 80/465. Searching the larger databases in ChessBase 11 produces more games, earlier games, and the information that GM Ľubomír Ftáčnik is the "strongest player" who has employed this line. Perhaps Akiba Rubinstein was stronger, but he played prior to FIDE adopting an Elo rating system, and so CB 11 ignores his efforts in the data field reporting "strongest". Alexander Alekhine played it once in a simul, as well, but he lost. Boris Spassky reached a similar position after 8.O-O-O, and the line appears in ECO (Informant 2/507).

ChessBase Online contains forty-seven games with the position from ECO in the image above. White scores a shocking 70.2% in these games. Of course, some of these games in the database are between relatively weak players. Most are interesting games between masters.

White's plan is not difficult to fathom: an all-out assault on the enemy king. Black must seek counterplay that exploits the half-open c-file. White's attack is already better prepared, so Black's task is difficult. There were eleven games 1905-1966 with ten White wins and Alekhine's loss. The first draw occurred in 1971.

Black's most popular replies are 10...Ne4 and 10...c5, but Win Lay Zaw's 10...Re8 deserves scrutiny. Zaw was not the first to play this move, which appears one other time in the ChessBase database. Zaw's novelty came on the next move, 11...Nf8. In the Informant annotations, Ftacnik points out a draw that Zaw missed near the end. Zaw's pawns nearly rolled over the top of White's position down the center.

I am looking through these games, which offer some interesting study material featuring attack and counter-attack.