9 months ago I got the idea that I wanted to create a chess e-book. Don’t really know why.
And I’m sure I wouldn’t have gotten the idea in the first place had I known what a time consuming project it is to make one!

First, I had to decide on a subject. That was already difficult. Many, many chess e-books are available already. Many, many subjects have been covered.

I decide to write an e-book on the Marshall Attack.
For many reasons:

1) To my knowledge, there are no up-to-date books out on the Marshall
2) It’s an opening played very regularly on top level
3) Choosing a very specific opening line, made limitations on subject much easier!
4) I like the Marshall - it’s interesting!
5) I already wrote an article on the Marshall here on my blog

Now, it may read as if my Marshall e-book is already done.
It’s not. Far from.
But I think I’ve spent more work on it already than I have to spend in the future.
In other words, it’s more than half done.

This is all for now. I will of course keep you updated on the progress of my work on the e-book.

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This was my most recent draw against one of the tournament favourites and also the head of the danish CC Federation!
The game quickly transposed into a the Richter-Veresov Attack which should not be too dangerous for black. And although I allowed hi a knight on b6 he never really had anything going so we agreed on a fairly quick draw.

[Event "DM 2009 (Danish Championship)"]
[Site "ICCF"]
[Date "2009.11.1"]
[Round "-"]
[White "Peschardt, Søren"]
[Black "Jensen, Claus"]
[Result "1/2-1/2"]
[WhiteElo "2196"]
[BlackElo "2126"]

1.d4 Nf6 2.Nc3 d5 3.Bg5 Nbd7 4.Nf3 h6 5.Bh4 e6
6.e3 c5 7.Be2 Be7 8.O-O O-O 9.a4 a6 10.a5 cxd4
11.Qxd4 Nb8 12.Ne5 Nfd7 13.Bxe7 Qxe7 14.Na4 Nxe5 15.Qxe5 Nc6
16.Qc3 Bd7 17.Nb6 Rad8 18.Rfd1 Be8 19.f4 f6 20.Rd2 Bg6
21.g3 Qd6 22.Ra4 Rfe8 23.Bf3 Qe7 24.h3 Be4 25.Bg2 Bxg2
26.Kxg2 Na7 27.Qb4 Qf7 28.Rd3 Nc8 29.Nxc8 Rxc8 1/2-1/2

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GM Bent Larsen turns 75 this thursday, march the 4th.

His birthday is a major event in Denmark because Bent Larsen has been an icon for the last few generations of danish chess players. Several small tournaments to celebrate Bent Larsen will be held this week and at the Copenhagen Chess Festival this summer there will be a rapid and a blitz match between danish GM Peter Heine Nielsen and russian super GM Peter Svidler.

Why is Bent Larsen so important to danish chess?
There are several answers to this question, but first and foremost, he was our first GM ever!
Bent had become an international master in 1955 and nobody expected him to become grandmaster only a year later. But that was what happened, because at the FIDE congress following the 1956 olympiad in Moscow, he was awarded the title because of his brillant performance on the top board in the A-final.
He scored 77% which was more than any other player on board 1, including reigning world champion Mikhail Botvinnik!!

In the next 10 years, Bent Larsen became more and more competitive. And from mid-60’s to the late 70’s, Bent Larsen belonged to the absolute world elite. He was awarded the first chess oscar in 1967 acknowledging him as the strongest player in the world that year. On my video page there are several annotated videos from that year…
From the late 70’s his relative playing strength declined somewhat although he still played a lot and won many tournaments, but he no longer belonged to the absolute top. 
In the last 10 years he has played a few tournaments in Argentina - where he has lived for many, many years - and his official FIDE rating is still 2415. I suspect his playing strength now is significantly lower, though.

Bent Larsen has written several books, most of them with an instructional purpose. This is another important reason why Bent Larsen is an institution in danish chess.

Bent Larsen mastered all aspects of the game.
He was not afraid of playing risky openings if he felt that this could give him a psychological advantage.
He did have excellent tactical skills, but more often than not, he won by positional means. 
He had a positional style and he loved to convert a good positon into a won endgame. He was definitely one of the best endgame players of his time.

As a curiosum taken from wikipedia it could be mentioned that Larsen has beaten all world champions who reigned in the period 1948-1985. He has beaten  Mikhail Botvinnik, Vasily Smyslov, Mikhail Tal, Tigran Petrosian, Boris Spassky, Bobby Fischer, and Anatoly Karpov.

A few examples of Larsens game from 3 different decades and showing 3 different aspects of his game:

1956 Olympiad
Bent Larsen - Svetozar Gligoric
White to move

40.Kf5!
Taking the side opposition - 40.Ke4?? would be drawn after 40…Kxc4! since the black king now has the opposition.
After 40.Kf5! 40…Kxc4 loses to 41.Ke4!, so Gligoric tried
40…Kd4
but to no help because Larsen took the opposition with
41.Kf4! Kc5 42.Ke5 Kxc4 Ke4!
and Larsen went on to win this game, which was his only win against a GM in the olympiad. He drew all the other GM’s in that event.

1966 Santa Monica - 2nd Piatigorsky Cup
Bent Larsen - Tigran Petrosian

White to move

Larsen has played this game with great energy and now we have reached the point of the game that proves that Larsen is not just a positional player. He has excellent tactical skills! The next move was planned several moves ahead and is a true beauty:

25.Qxg6!!

Larsen is sacing his queen against the world champion!! 
And there’s no defence. Petrosian tried 25…Nf4 but lasted only 4 more moves before he resigned.
Probably the most famous Larsen game of all…

1976 Biel Interzonal
Bent Larsen - Oscar Castro

White to move

Castro has just moved 20…e4, threatening Larsen’s Queen on b2.
It’s a very sharp and complex position and Larsen needs a win to maintain his lead in the tournament.
I think most players would move their queen to b3 and hope to be able to squeeze out a win and this may be the objectively best continuation.
But Larsen evaluated the position both tactically and psychologically!
And he decided to play

21.Nxe4!?!

Probably a few more marks is required to describe this extremely interesting move!
Poor Castro couldn’t believe his own eyes: Was the leading player really sacing his queen?
And how was he supposed to be able to calculate the consequences of taking the queen over the board?
Even the strongest chess engines these days cannot quite figure out if the queen sac is correct, they tend to believe white can get no more than a draw through perpetuals:

21…Bxb2 22.Bxb2 (threatening Nf6+) Kf8 23.Nf6 Qe2 24.Nxh7+ Ke8 25.Nf6+ etc

But Castro didn’t dare to take the queen. He played

21…Ne5

And although the position is still fairly even, Castro had lost the psychological battle and lost the game in 36 moves!  

These were a few examples from a long and succesful career of the best danish chess player ever, soon-to-be 75 year old GM Bent Larsen.

Tillykke med fødselsdagen, Bent!

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It’s very rare to see miniatures like the game below in correspondence chess.
Nonetheless, see what happened to my opponent in the Ernst Nielsen Memorial on ICCF:

YouTube Preview Image
[Event "Ernst Nielsen Memorial"]
[Site "ICCF"]
[Date "2009.12.15"]
[Round "-"]
[White "Jensen, Claus"]
[Black "Nielsen, Poul Henning"]
[Result "1-0"]
[WhiteElo "2126"]
[BlackElo "1850"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nd4 4.Nxd4 exd4 5.O-O Bc5
6.b4 Bxb4 7.Bb2 Bc5 8.c3 dxc3 9.Nxc3 c6 10.Nd5 Bf8
11.Qh5 cxd5 12.exd5 Qb6 13.Rae1+ Ne7 14.Ba3 Kd8 15.d6
1-0

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Just did a new video on a very nice positional game from the interzonal in Stockholm 1952.
Black is Mark Taimanov and he outplays Wolfgang Unzicker completely!

At one point in the video I suggest that you pause the video and try to find the best plan for black. I think this is an excellent excercide if you want to train your positional planning skills.

YouTube Preview Image

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This was my first win in the tournament!

[Event "DM 2009 (Danish Championship)"]
[Site "ICCF"]
[Date "2009.11.1"]
[Round "-"]
[White "Nielsen, Jens Holm"]
[Black "Jensen, Claus"]
[Result "0-1"]
[WhiteElo "1983"]
[BlackElo "2126"]

1.Nc3 g6 2.g3 Bg7 3.Bg2 c5 4.d3 Nc6 5.f4 d6
6.Nf3 Nf6 7.O-O O-O 8.e4 Rb8 9.h3 b5 10.a3 a5
11.Be3 Nd7 12.Qd2 b4 13.axb4 axb4 14.Nd1 Bb7 15.c3 Ra8
16.Nf2 Qb6 17.d4 cxd4 18.Nxd4 Na5 19.Ne6 Nc4 20.Bxb6 Nxd2
21.Nxf8 Nxb6 22.Rxa8 Bxa8 23.Nd7 Nxd7 24.Ra1 Nb6 25.Ra6 Ndc4
26.Bf1 bxc3 27.bxc3 Bb7 28.Ra7 Bc6 29.Rxe7 Na5 30.Rc7 Bf6
31.Ra7 Bxc3 32.e5 dxe5 33.fxe5 Nac4 0-1

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I will post some of the games from this event. - CROSSTABLE
This game was against the hghest rated and the winner of the two most recent championship, so I thought a draw would be ok for me - even with the white pieces.
And a draw was what I got from my 6.h3 against the Najdorf:

[Event "DM 2009 (Danish Championship)"]
[Site "ICCF"]
[Date "2009.11.1"]
[Round "-"]
[White "Jensen, Claus"]
[Black "Ottesen, Søren Rud"]
[Result "1/2-1/2"]
[WhiteElo "2126"]
[BlackElo "2360"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6
6.h3 e6 7.g4 d5 8.Bg2 Nxe4 9.Nxe4 dxe4 10.Bxe4 e5
11.Nb3 Qxd1+ 12.Kxd1 h5 13.g5 Nc6 14.c3 Be6 15.f4 exf4
16.Bxf4 O-O-O+ 17.Kc2 Bd6 18.Bxd6 Rxd6 19.Rae1 Rhd8 20.h4 Kc7
21.Rhf1 Kb6 22.Rf4 Re8 23.Nd2 Rd7 24.Nf3 Rde7 25.a3 Bd7
26.c4 Rxe4 27.Rexe4 Rxe4 28.Rxe4 Bf5 29.Kd3 a5 30.b3 Kc5
31.Nd2 Ne5+ 32.Ke3 Bxe4 33.Nxe4+ Kc6 34.Nd2 Ng6 35.Nf3 Kc5
36.Kd3 b6 1/2-1/2

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This is my most recent game from chess.com
It has some very nice attacking ideas and I’m currently working on a video on this game, so until now you have to be content with watching the game:

YouTube Preview Image
[Event "chess and dance 13 - Board 5"]
[Site "Chess.com"]
[Date "2009.11.15"]
[White "cludi"]
[Black "gerryj17ouano"]
[Result "1-0"]
[WhiteElo "2565"]
[BlackElo "2361"]
[TimeControl "1 in 3 days"]
[Termination "cludi won by resignation"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.h3 e5  7.Nde2 Be6 8.g4 h6 9.Bg2 Nc6 10.Be3 Be7
11.Qd2 b5 12.f4 Rc8 13.Nd5 Bxd5 14.exd5 Na5 15.b3 Qc7 16.O-O O-O 17.Ng3 Nb7 18.Nf5 Qd7 19.Nxg7 Nxg4 20.hxg4 Kxg7
21.fxe5 dxe5 22.Bxh6+ Kg8 23.Rae1 Rfe8 24.Rf3 Qxg4 25.Kh2 Bh4 26.Rg1 Kh8 27.Bg7+ Qxg7 28.Rh3 Qf6 29.Rf1 Qg6 30.Rxh4+ Kg7
31.Be4 Qd6 32.Qg5+ 1-0

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Round 13 - Sunday the 31st
L. van Wely - V. Anand ½-½
N. Short - J. Smeets ½-½
H. Nakamura - S. Tiviakov 1-0
M. Carlsen - F. Caruana ½-½
V. Ivanchuk - P. Leko ½-½
A. Shirov - L. Dominguez ½-½
V. Kramnik - S. Karjakin ½-½

So no matter the result of the remaining game, Nakamura-Tiviakov, Carlsen is the winner of Corus 2010!
Congratulations to Magnus!

Final standings

1. M. Carlsen
2. A. Shirov
V. Kramnik
8
4. H. Nakamura
V. Anand
6. S. Karjakin
V. Ivanchuk
7
8. L. Dominguez
P. Leko
10. F. Caruana
11. L. van Wely
N. Short
5
13. S. Tiviakov
J. Smeets

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Round 12 - Saturday the 30th
V. Anand - V. Kramnik 1-0
S. Karjakin - A. Shirov ½-½
L. Dominguez - V. Ivanchuk ½-½
P. Leko - M. Carlsen ½-½
F. Caruana - H. Nakamura ½-½
S. Tiviakov - N. Short ½-½
J. Smeets - L. van Wely 1-0

All of the sudden Anand “wakes up” and beats co-leader Kramnik!

Standings:

1. M. Carlsen 8
2. A. Shirov
V. Kramnik
4. V. Anand 7
5. S. Karjakin
H. Nakamura
V. Ivanchuk
8. L. Dominguez
P. Leko
6
10. F. Caruana 5
11. S. Tiviakov
L. van Wely
N. Short
14. J. Smeets 4

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