Showing posts with label Bangkok Chess Club. Show all posts
Showing posts with label Bangkok Chess Club. Show all posts

Wednesday, April 15, 2009

A Comfortable Stonewall

It's always nice to end a tournament with a win (and it makes it easier to resist the next opportunity to play). My opponent was another Norwegian. Actually I think he participated in the very first tournament I played outside my club, more than 30 years ago. He is considerably lower rated than me, so a win wouldn't improve my tournament result much - but a loss or even a draw would cost me dearly.

Haveland - Sv.Johnsen
Thailand Open 2009 (9)
1.d4 f5
I was quite happy when my opponent played 1.d4 as now the position is quite unbalanced already.
2.Nf3 e6 3.g3 Nf6 4.Bg2 d5
The Stonewall. I considered a more flexible system, possibly increasing my winning chances but I know there are lots of winning potential even in rather stale looking Stonewall positions.
5.c4 c6 6.cxd5?!
This is not that bad a move but it's harmless in the extreme.
6...exd5 7.0–0 Bd6 8.Nc3 0–0 9.Rb1

White plans a minority attack with b4-b5. Two other moves with similar aims are 9.a3 and 9.Qc2.
9...Ne4 10.e3
White sensibly decides to stop ...f4 but weakens his light squares somewhat. There are not many games with this position played at an international level. In the following game at least Black is 2400+: 10.Nxe4 fxe4 11.Bg5 Qe8 12.Nd2 h6 13.Be3 Nd7 14.b4 Nf6 15.Qb3 Bf5 16.b5 Qh5 =+ Weng Tianlun-Wang Yue, Suzhou 2001.
10...Nd7 11.Qc2 Qe7 12.Nd2
This appears to be the first new move in the game. Hamrakulova-Ambrosi, Wch Girls U18 Chalkidiki 2003 was drawn after 12.a3 Nb6 13.Ne1 Be6 14.Nd3 Bf7 15.b4 Nc4 16.Re1 Ng5 17.Qd1 Rae8 18.Rf1 Qf6 19.Nc5 Qe7 20.Nd3 Qf6 21.Nc5 Qe7 22.Nd3 Qf6 23.Nc5.
12...Ndf6 13.Ndxe4 fxe4 14.Bd2 Bg4
I briefly considered 14...b6 but wasn't sure how well I would stand even if my opponent overlooked my threat, e.g. 15.f3 Ba6 16.fxe4 Bxf1 17.Rxf1 dxe4 18.Nxe4 and White may even be better.
15.f3 exf3 16.Bxf3 Rae8 17.Rbe1 Bh3 18.Bg2 Qd7 (D)
I have completed my development but was not sure how to go ahead. Fortunately my opponent now forces the play, saving me some difficult desicions.
19.e4?
As my opponent pointed out, 19.a3 would have been a very useful preparation for this central break - at least after my most natural replies, 19...a5 and 19...Re7 - simply because there then will be no pawn to pick up on a2.
19...Bxg2 20.Kxg2 dxe4 21.Nxe4 Nxe4 22.Rxf8+ Bxf8 23.Rxe4 Qd5 24.Kf3 (D)
This position arises more or less by force as a consequence of White's 19th move.
24...Rxe4
I looked carefully for a permanent bind/zugzwang but didn't see anything really convincing so I grabbed the pawn. When checking with Rybka it produced this line: 24...g5! 25.g4 (25.a3 g4+) 25...Bd6 26.h3 Kg7 27.a3 a5 28.a4 h6 29.Be1 b6 30.Ke3 Bf4+ 31.Kf3 Kg6 which looks quite promising (Rybka says '-+ -1.61'.) but it refuses to tell me how I actually convert it to a full point.
25.Qxe4 Qxa2 26.Bc3 Qf7+
Simpler and stronger is 26...Qd5 27.Ke3 Qxe4+ 28.Kxe4 Kf7 29.d5 c5.
27.Ke3 Bd6 28.Qg4 Kf8 29.Kd3 Qg6+
I assumed this must be a win despite my doubled pawns and White's active king.
30.Qxg6 hxg6 31.d5 c5 32.Kc4 a6 33.Ba5 b5+ 34.Kd3
Kf7 35.b3 (D)

35...Kf6 36.Ke4 Ke7 37.Bc3 Kf7 38.Ba5 Kf8 39.Kf3 Be7
Finally my two pieces have found positions from which I can make progress.
40.Bb6 Ke8 41.h3 Kd7 42.Ke4 Kd6 43.Ba5 Bf6 44.g4 g5?
This stupid advance creates a weakness and prolongs the game with at least 10 moves.
45.Be1 Be5 46.Bd2 Bf6 47.Be1 g6 48.Bg3+ Kd7 49.Kd3

49.Bf2 c4 50.bxc4 bxc4 51.Bb6 Kd6 doesn't make much difference.
49...a5 50.Be1 Bd8 51.Bc3 Kd6 52.Ke4 c4 53.bxc4 bxc4 54.Bb2 Kc5
54...Bb6 is equally good as 55.Ba3+ Bc5 56.Bxc5+ Kxc5 57.Ke5 c3 58.d6 c2 59.d7 c1Q 60.d8Q Qe3+ 61.Kf6 Qd4+ is winning.
55.Ba3+ Kb5 56.Kd4
56.d6 Ka4 57.Bc1 Kb3 58.Kd5 c3 doesn't change anything.
56...Bf6+ 57.Ke4 Ka4 58.Bc1 Kb3 59.d6 a4 60.Kd5 c3 61.Be3 c2 62.Ke6 Bd8 63.Kd7 Ba5 64.Bxg5 a3 0–1

The Scandinavian Variation

My 8th game was a painful loss against a young Singaporean boy:

Wee Che En - Sv. Johnsen

Thailand Open 2009 (8)

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0–0 Be7 6.Re1 b5 7.Bb3 d6 8.c3 0–0 9.h3 a5!?

This was what I had prepared against 1.e4 for this tournament. I like to call it the Scandinavian variation but may well be the only one to do so.

10.a4 b4 11.d4 bxc3 12.bxc3 exd4 13.cxd4 (D)

13...d5!

This is Black's idea in the 10.a4 line. Now it looks a little like a Open Ruy Lopez with Black controlling b4.

14.e5 Ne4 15.Nbd2

15.Re3 Nb4 16.Nc3 Bb7 17.Ne2 Kh8 18.Ba3 f6 19.Nf4 Ra6 20.Bxb4 axb4 21.Bxd5 Bxd5 22.Nxd5 Qxd5 23.Qd3 Nc5 24.dxc5 Qxd3 25.Rxd3 fxe5 = Castillo-Bolbochan, Mar del Plata 1950.

15...Bf5 16.Ba3!?

I didn't remember having ever seen this move and thought it looked a little funny. But when consulting my notes I had actually analyzed a GM game with it.

16...Bxa3

The game I had analysed went 16...Nb4 17.Nf1 c5 18.Ne3 Be6 19.Bxb4 axb4 20.dxc5 Bxc5 21.Qd3 Rc8 22.Rad1 Bb6 and Black was clearly better in Hellers-Kupreichik, Malmo 1987. The big question is whether these moves ever entered my mind or if they only appeared on my screen with Rybka doing the thinking. In earlier days I always played through my notes on a chess board (frequently a pocket set but a full size board if circumstances permitted me). It is too time consuming for my present life situation, but far better for memorization.

17.Rxa3 Nb4 18.Ra1 c6

I tried to calculate 18...Nd3 19.Re3 and now I looked at 19...Ndxf2 20.Qe2 Nxd2 21.Nxd2 Ne4 as well as 19...Nexf2 20.Qe2 and decided against the entire variation as I didn't find the resulting positions particularly clear. After the game I was pleased to see that Rybka agreed in this evaluation. That being said, the move I played probably reveals my lack of understanding for this kind of positions. It seems that Black in similar positions play a quick ...c5 with active piece play. Instead I tried to stabilize the queenside, hoping to create kingside chances with ...f6 at some point. This may be sufficient for equality but demands quite exact play.

19.Qe2 Rb8 20.Rec1 h6 21.Qe3 Kh8 22.Nxe4 Bxe4 23.Nd2 Bh7 24.Rc3 Qe7 25.Bd1 f6 26.f4 fxe5 27.fxe5 Rf7 28.Nf3 Rbf8 29.Qd2 Be4 30.Be2 Rf4 31.Rf1

For the last dozen of moves I as well as my opponent have played quite decent chess. My problem was that I didn't quite appreciate my opponent's play and felt that I should be looking for an advantage. Instead my small weaknesses on a5 and c6 were slowly beginning to be felt. So rather than accepting that I had to fight for equality, I played a somewhat desperate move:

31...g5?

It is tempting to add another question mark as this move isn't only weakening; it's also completely unprovoked.

32.Rc5 Qc7 33.Nh2!

This move I had completely missed.

33..Rxf1+ 34.Bxf1 Rf4 35.Ng4 Qd8

Probably 35...Kg7 36.Nf6 Bg6 is a somewhat better attempt to keep my position together.

36.Nf6 Bg6 37.Be2 Qb6 38.g3 Rf5 39.Qe3! Na2? (D)

Objectively this is a losing error but as my position is creaking in its seams anyway, I only give it one question mark. Actually I considered '?!' as it forces White to calculate a fairly long line.

40.Bd3 Qb3 41.Rxa5!

This wins as does 41.Rxc6.

41...Nb4 42.Ra8+ Kg7 43.Rg8+ Kf7 44.e6+ Kxf6

44...Ke7 45.Rg7+ Kxf6 46.Rxg6+ Ke7 47.Rg7+ comes to exactly the same.

45.Rxg6+ Ke7 46.Rg7+ Ke8 47.e7!

The move I overlooked when I played 39...Na2.

47...Qd1+ 48.Kg2 1–0

Wednesday, April 8, 2009

Confusing Names

With double rounds for the first three days, there is not much time for preparation against a specific opponent. But for the morning rounds (3 and 5) there is in principle possible to do a quite thorough check of your opponents games and try to guess what will be the battle ground. However, for this game I was very partially prepared for a quite peculiar reason: There are two Indian IMs of roughly the same strength, one named Roy Saptarshi and one named Roy Chowdhury Saptarshi. Both play BCC Thailand Open and I assumed they were brothers. The first player (without Chowdhury) has no games in Megabase 2009, the second has 219. I assumed that the two players had gotten merged into one by Chessbase staff and looked for a way to guess what games might have been played by my opponent. I found that there were quite a number of Veresov games and in lack of anything more useful assumed that my opponent (possibly the younger brother) was the one playing this rather rare opening. So my only preparation was for the continuation 1.d4 d5 2.Nc3 Bf5(!) 3.f3 Nf6 4.Bg5 Nbd7 5.Nxd5!?. Of course this proved quite useless.

Roy Saptarshi - Sv.Johnsen
BCC Thailand Open (5)

1.e4
There went my preparation - wrong player?
1...c6
This I have not played in a tournament game for 20 years, but I have an interesting line against the Advance variation.
2.d4 d5 3.f3!?
The Fantasy variation. It doesn’t look particularly threatening but can lead to quite complicated play.
3...e6
Had I had any idea that this position might appear on the board I probably would have had a look at 3...e5?! which I enjoy playing in blitz (but probably is unsound) and 3...Qb6!? (which I think may be underestimated).
4.Nc3 Bb4 5.Bf4 Nf6 6.Qd3 Qa5!?
This more or less obliges me to give up my dark-squared bishop for a knight. Two more popular continuations are:
a) 6...b6 7.Nge2 Ba6 8.Qe3 0–0 9.0–0–0 Nbd7 10.g4 Rc8 11.Ng3 Bxf1 12.Rhxf1 b5 13.Kb1 Qb6 14.Nce2 Qb7 15.Bg5 Kh8 16.e5 Ng8 17.f4 += Prusikin-Brunner, Switzerland 2008.
b) 6...0–0 7.Nge2 (7.0–0–0 Bxc3 8.Qxc3 dxe4 9.fxe4 Nxe4 10.Qe1 f5 11.Nf3 Nd7 12.h3 a5 13.Bd3 Ndf6 14.Be5 a4 unclear Winants-Fridman, Netherlands 2005) 7...c5 8.0–0–0 c4 9.Qe3 b5 10.Bg5 Be7 11.e5 Ng4 12.fxg4 Bxg5 13.Nf4 f6 =+ Kurmann-Pavlovic, Biel 2006.
7.Nge2
7.Bd2 b6 8.Qe3 dxe4 9.fxe4 e5 10.Nf3 exd4 11.Qxd4 Qc5 12.Qxc5 Bxc5 13.e5 was a little better for White in Gofshtein-Bruk, Israel 2002.
7...b6
In an earlier my opponent (or his namesake) faced 7...c5 8.0–0–0 dxe4 9.fxe4 cxd4 10.Nxd4 0–0 and after 11.Nb3 Qb6 12.Nb5 Na6 13.Be3 Nc5 14.Qe2 Bd7 15.N5d4 Rac8 16.Qf3 Ncxe4 17.Bd3 Nc5 Black was clearly better in Roy Chowdhury-Al Sayed, Port Erin 2006.
8.Bd2
Or 8.a3 Ba6 9.Qe3 0–0 (after 9...c5 10.0–0–0 Bxe2? 11.Nxe2 White was practically winning in S.Gabrielsen-T.Eriksen, Asker 2000) 10.g4 Be7 11.g5 Nfd7 12.exd5 cxd5 13.Kf2 Nc6 with unclear play in Boulard-Dumitrache, Sautron 2001.
8...Ba6 9.Qe3 dxe4 10.fxe4 0–0
It seems 10...e5 is too early: 11.0–0–0 Bc4 12.Kb1 exd4 13.Nxd4 Bxc3 14.Bxc3 Qxa2+ 15.Kc1 += Permuy Lorenzo-Miguel Lago, Mondariz 1995.
11.a3 c5
This seems better than 11...e5, e.g. 12.dxe5 Ng4 13.Qg3 Nxe5 14.Ra2! Bd6 15.b4 +- Carmeille-Bastian, Germany 2006.
12.0–0–0 (D)

12...cxd4
I considered 12...Bxa3 but stopped my calculations after 13.bxa3 (13.e5 is critical too) 13...Qxa3+ 14.Kb1 Qb4+ 15.Ka1 Qa3+ (Rybka prefers 15...Nc6 with roughly equal chances) 16.Na2 which not only stops the checks but also threatens a queen exchange. However, Rybka quite likes Black's position after 16...Qa4 with 17.e5 Ng4 18.Qf4 Qxc2 as a kind of main line. 13.Nxd4 Bxc3 14.Bxc3 Qa4 15.Bd3 Bxd3 16.cxd3 Nbd7 17.Kb1 Rac8 18.Rc1 Rfd8 19.Rhf1 Ne5 20.h3
My opponent told me he had spent quite a lot of time calculating 20.Nxe6 Rxd3 21.Bxe5 (21.Qg5 fxe6 22.Qxe5 Qxe4 is nothing for White) 21...Rxe3 22.Rxc8+ Ne8 23.Nxg7 but stopped when he saw 23...Qxe4+ followed by 24...Qxe5.
20...Qa6 21.Rfd1 (D)
Now 21.Nxe6 fails to the simple 21...Rxc3 22.Rxc3 fxe6.
21...Nxd3??
After 21...Qa4 a quite reasonable continuation is 22.Rf1 Qa6 23.Rfd1. My opponent almost certainly would not have played this and indicated in a brief post mortem that he had planned 22.g4, but then 22...Rxc3! 23.bxc3 Rxd4! 24.Qxd4 Qb3 is a perpetual.
22.Qxd3! Qxd3+ 23.Rxd3 e5
23...Nxe4 is a little better but completely hopeless.
24.Nf5! 1–0
I had missed the simple fork on e7. 24.Nc6! wins just as easily.

After the game a friendly Indian IM explained me a bit more about Indian names and about this particular name confusion. It turned out that the first names (Roy and Roy Chowdhury respectively) are the family names, and the last (Saptarshi) is the given name. The two players are not related but quite happy to be mixed up by Chessbase.

Thursday, April 2, 2009

The Whole Truth?

I have always made a point to have a post-mortem with my opponent after a game - simply because I enjoy it and find it useful. However, when going to a tournament with my wife and little son, that doesn't seem the right way to spend my time. So during this tournament I have not so far had a look at my games with my opponents but rather done some quick Rybka checks at a more convenient time. The computer generally shows me how well or badly I and my opponent calculated and frequently (but not always) provides a more accurate assessment of the positions than what I had during the game. What I miss is that little look into my opponent's mind that a post-mortem offers. I need to be reminded how a chessplayer thinks during a game.

Sv.Johnsen - Akharaboollasez
BCC Thailand Open 2009 (2)

1.d4 Nf6 2.Bf4

This occasionally leads to a more interesting game than 2.Nf3 followed by 3.Bf4 does.

2...e6 3.e3 c5 4.c3 Be7 5.Nd2 d5 6.Bd3 b6 7.Ngf3

This is the right moment to enter the more traditional London lines as 7...Nh5 now can be met by 8.Bxb8 and a check on b5, forcing Black to move his king and lose time with his misplaced knight.

7...Bb7 8.Ne5 0–0 9.Qf3 Nbd7 10.Qh3

This attacking formation is one of the main ideas behind the classical London System. But with his bishop on b7 and his knight on d7, Black's e4 control may just be sufficient for equality.

10...Re8 (D)

11.g4!?

Probably 11.Ndf3 is better 11...Ne4 which I thought looked annoying is well met by 12.Nxd7 Qxd7 13.Ne5. If my memory had been better I might have remembered the continuation of Blackburne-Harmonist, Breslau 1889: 13...Qd8 14.f3 Nf6 15.Ng4 g6 16.Bb5 Nd7 17.Nh6+ Kg7 18.Nxf7 Bh4+ 19.Bg3 Kxf7 20.Bxh4 with a clear advantage to White. This is Illustrative Game 3 in ’Win with the London System’. The London is easy to learn superficially but exact knowledge takes a bit more as the many similar positions can easily be confused.

11...Nf8

This is an important defensive resource.

12.Ndf3 Ne4 13.g5!?

I considered 13.Bb5 but found that 13...f6 14.Nc6 Qc8 15.Nxe7+ Rxe7 was a bit unclear. Doda-Kraidman, Siegen 1970 continued 16.g5 Ng6 17.gxf6 Nxf4 18.exf4 Nxf6 19.0–0–0 Ba6 20.Bxa6 Qxa6 21.Kb1 with a small advantage to White.

13...cxd4 14.exd4 Bxg5 (D)

I considered this too risky on general grounds but was not sure how Black could save himself. I thought that after 14...Ng6 15.Nxg6 hxg6 16.Rg1, Black was helpless against the plan Rg4-h4. Rybka, however has no problems finding 16...Qc8 17.Rg4 e5 18.Nxe5 Ba3! with quite difficult play.

15.Nxf7?!

A much stronger continuation is 15.Nxg5 Nxg5 16.Qh5 g6 17.Qxg5. What I missed was that 17...f6 18.Qh6 fxe5 19.Bxe5 gives White a deadly attack, e.g. 19...Qe7 20.Rg1 Rac8 21.Bxg6 Nxg6 22.Rxg6+ hxg6 23.Qh8+ Kf7 24.Qg7 mate.

15...Kxf7 16.Bxg5 Nxg5 17.Qh5+ g6 18.Nxg5+?

I wanted to play for mate but Black can defend quite easily. After 18.Qxg5 Qxg5 19.Nxg5+ Kg7 20.f4 White would have had a very nice positional plus.

18...Kg7 19.Qg4 e5 20.0–0–0 e4

After 20...h6 I considered 21.h4!? hxg5 22.hxg5 with a lot of possibilities but nothing that really works for White. One reasonable line is 22...e4 23.Bb5 and now 23...Re7 24.Qh3 Qd6 25.Qh8+ Kf7 26.Rh7+ Nxh7 27.Qxh7+ Kf8 28.Qh8+ leads to a drawing mechanism I noticed during the game. A better try for Black may be 23...Qd6 24.Bxe8 Rxe8 when he probably is a little better. Consequently White probably should play 21.Nh3 when 21...Bc8 must be a little better for Black than the game.

21.Bb5 Bc8! 22.Qf4 Re7

Rybka at first prefers 22...Bd7 but after a while finds that White wins after 23.Qf7+ Kh6 24.Rdg1 Bxb5 25.Rg4 Be2 26.Rh4+ Bh5 27.Rg1 Qe7 28.Qf4 Kg7 29.Rxh5 (but even then there are some long semi-forcing lines after 29...e3).

23.h4 Qc7 24.Qe3 h6 25.Nh3 Rf7 26.Be2 Nh7?!

This looks wrong. 26...Bxh3 27.Rxh3 Qf4 28.Qxf4 Rxf4 29.f3 e3 30.Re1 Re8 is roughly equal.

27.Rdg1 Bxh3 28.Rxh3 Qf4 29.Rhg3 Qxe3+ 30.fxe3 Rf6 31.Kd2 (D)

This looks like a very good reversed French for White. Black's central pawns are weak.

31...Raf8

31...b5! 32.Bxb5 Rb8 is a much better chance.

32.R1g2 a5?!

This does nothing positive for Black's position.

33.Rg4 Rc8 34.a4 Rfc6 35.Bb5 Rf6 (D)

36.c4?

My lacking sense of danger strikes again! This is the wrong moment to act.

36...dxc4?

36...h5! 37.Rf4 Rxf4 38.exf4 dxc4 is only a little better for White.

37.Rxe4 Rc7 38.Kc3 Rf1 39.Re6 Nf6 40.Bc6 Rc1+ 41.Kd2 Rh1?

41...Rf1 42.e4 Rf4 43.e5 Ng4 is a little better but still probably winning for White. The rest is simple.

42.Rxg6+! Kxg6 43.Bxh1 Kf7 44.Rxb6 Re7 45.Bf3 h5 46.Rb5 Ng4 47.Rxh5 Nxe3? 48.Rh7+ 1–0

Attempting a Kick-Start

My preparations for BCC, Thailand Open didn't go as planned. I never got around to any problem solving or training games and my opening preparation is patchy. In my first game I tried to get into tournament mode by concentrating on calculation more than on general strategy. Unfortunately my brain didn't quite manage to adapt.

The time control was 90 minutes for the game and an additional 30 seconds for each move.

Uehara-Sv.Johnsen
BCC Thailand Open 2009 (1)

1.d4 f5

I have heard that Japaneese players generally are good at calculating - possibly because many are experienced Shogi players. So maybe it wasn't a great idea starting the game by weakening my king's position. On the other hand this is the only opening against 1.d4 on which I have done any work lately.

2.c4 e6 3.Nc3 Nf6 4.g3 Bb4!?

Entering the Stonewall with 4...d5!? would probably have been the most sensible choice as that's what I have been spending my time on recently.

5.Bg2 0–0 6.Nh3 Ne4

6...d5 of course is an option but with White’s knight committed to h3 so early it’s tempting to play for ...e5. Probably 6...d6 is the safest way to do so. Two possible continuations are:

a) 7.0–0 Bxc3 8.bxc3 Nc6 9.c5 Ne4 10.cxd6 cxd6 11.Qc2 d5 12.Ba3 Rf7 13.f3 Nd6 14.Rae1 b6 15.e4 += Poulsen-Jakab, Budapest 2004.

b) 7.Qb3 Bxc3+ 8.bxc3 Nc6 9.0–0 Qe8 10.Nf4 Rb8 11.Qa3 b6 12.Nd3 Bb7 = Oliwa-U.Krause, Germany 1995.

7.Bd2 Bxc3 8.Bxc3 d6 9.Nf4 Qe7 10.Qb3 Nd7 11.c5 Ndf6 12.cxd6 cxd6 13.Rc1 g5!? 14.Nd3 b6 15.Bb4 Nd5 16.Ne5 Bb7 17.Nc4 Nxb4 18.Qxb4 (D)

Here I spent a lot of time (probably close to 40 minutes) trying to find out whether there was anything for Black in the game continuation or after 18...Qg7 (or 18...Qf6 19.f3 Qxd4) 19.f3 Qxd4 20.fxe4 and now either 20...Rac8 or 20...fxe4.

The correct continuation proably is 18...Rac8 19.0–0 Bd5 20.Bxe4 fxe4 21.Qxd6 and now 21...Qf6! with excellent chances.

18...Nxg3?

When I played this I had realized that it lost a pawn rather than winning one. But by now I was down to 13 minutes on my clock and I wanted to play something forcing in order to have something to show for my lengthy calculation.

19.Bxb7 Qxb7 20.Rg1 Ne4 21.f3 Nf6?

A better practical chance would have been 21...d5 22.Ne5 Rac8 23.Rxc8 Qxc8 24.fxe4 Qc1+ 25.Kf2 Qf4+ which I probably would have played if I had realized how bad the game continuation was.

22.Rxg5+ Kh8 23.Qxd6!

After 23.Nxd6 Qd7 I probably have sufficient compensation for the pawn.

23...Rad8!? 24.Qe5

I thought that after 24.Qxe6 the open files towards White’s king would be sufficient practical compensation. That probably was a misevaluation - Rybka doesn’t believe in Black’s chances at all.

24...Qe7!?

A good practical try.

25.Kf2?? (D)

This is a terrible blunder. 25.a3 and quite a few other moves keeps the advantage.

25...b5??

This I played quite quickly. Not because I really was in time trouble but because I had a little more than five minutes left and wanted to get my time up somewhat by playing some ’obvious’moves quickly. Actually 25...Rd5! almost wins on the spot 26.Qf4 loses to 26...Ne4 and after 26.Qg3 or 26.Qe3, Black can choose between 26...Ne4+ and 26...f4.

26.Ne3 f4?

I am a pawn down for nothing but this turns the position into a forced loss.

27.Nf5!

This I only saw when I was waiting for my opponents move.

27...Qd7 28.Rc7!

This is not the only winning move but it’s the quickest.

28...Qd5 29.Nh6?!

Actually 29.Rg8+ Kxg8 30.Ne7+ is even stronger.

29...Qxe5 30.dxe5 Nd5 31.Rcg7!

This came as a small surprise. When the move appeared on the board it took me only a couple of seconds to see the idea but there’s nothing to do.

31...Rc8 32.Rg8+! 1–0

Saturday, March 14, 2009

Not Ready Yet

In a little more than two weeks I shall play my first real tournament in more than four years.
The 9th Bangkok Chess Club Tournament now has 12 registered GMs and I am ranked no. 61 out of 146 participants. It surely will be a nice tournament but it worries me that I am badly prepared in almost every way.

According to plans I should by now have completed my update of the London Systems files, and be well on my way to have a complete repertoire against 1.e4. Unfortunately that's very far from reality. I have barely started looking at the London and am still undecided about which opening to play against 1.e4.

However, the openings are not my weakest point. If I can only raise my tactical vision and my concentration I suppose I will not do too bad. The problem is that this is a much more evasive goal than working out an opening repertoire. Fortunately I have roughly one free week before the tournament and I have some tricks that I hope will kick-start my tactical vision.

The main problem with playing some blitz and basically no tournament games is that my sense of danger has been weakened. Yesterday's game in Sjakkalliansen, the informal Oslo team league for companies, was quite typical:

Sv.Johnsen-S.Nørve
Sjakkalliansen 2009
1.d4 Nf6
Normally I am very poorly motivated for these unrated team games. They are played on Wednesdays' evenings and a quick draw normally is a perfect result. However, for this game I tried to raise some interest in order to test my play. It helped somewhat that I lost my previous game against my opponent. Nørve must be roughly as rusty as I am but he is a three times Oslo champion from 20 years ago or so.
2.Bf4 b6 3.Nf3 Bb7 4.e3 g6 5.Nbd2 d6 6.Bc4
This bishop placement makes sense against a set-up with ...g6 and ...b6 but wasn't examined deeply in 'Win with the London System'.
6...Nh5?!

6...Bg7 is better but Black probably wanted to catch my bishop before I got around to play h3.
7.Bg5 h6 8.Bh4 g5? (Dia)
This move has a tactical flaw which makes Black's plan starting with 6...Nh5 meaningless.
9.Ne5!
I still usually notice this kind of simple tactics.
9...dxe5 10.Qxh5 e6 11.Bg3 Bg7

11...exd4 12.Bxe6 looks extremely dangerous. After 12...Qe7 13.Bc4 Bxg2 I may even consider 14.0–0–0!? Bxh1 15.Rxh1 as it's hard to see how Black can ever complete his development, e.g. 15...Nd7 16.Qf3 Rc8 (16...0–0–0 17.Ba6+ is of course not an option) 17.Qb7 and White must be winning.
12.Bxe5 Bxe5 13.dxe5 Bxg2 14.Rg1
Around here Jonatan, my three years old son, decided that he had seen enough and decided to leave for his mother, trusting that not even his father could mess this up.
14...Bd5 15.0–0–0 Bxc4 16.Nxc4 Nd7
(Dia)

17.f4?!
17.Qf3! as pointed out by my opponent is very strong, preventing Black from ever castling.
17...gxf4 18.Rg7
In this position I actually considered 18.Qf3! but discarded it thanks to some very sloppy calculations.
18...Qe7 19.exf4 0–0–0!
Black correctly judges that an endgame a pawn down is his best chance.
20.Qxf7 Qxf7 21.Rxf7 Nc5 22.Rxd8+?!

This move starts a phase of planless play.
22...Rxd8! 23.Ne3
23.b3 might well have won me a couple of tempi compared to the game continuation.
23...Rd4 24.b3 h5 25.h4 Kd8 26.a4 a5 27.Nc4?!
This blunders a pawn and hints that my form is not the best.
27...Nxa4
Here my opponent offered a draw and considering the trend of the game I would normally have accepted. However, the exchange doesn't change the fact that I am somewhat better thanks to my sounder pawn structure.
28.Nxa5 bxa5 29.bxa4 Rxa4 30.Kd2 Re4 31.Kd3 Re1 32.Rh7 Rf1 33.Ke3 a4
(Dia)

34.Rxh5??
My thought process run something like this: 'Can there be any danger picking up the pawn? No - if he tries to run with the a-pawn I just check him and go to a8 with my rook.' Well, that's exactly how you trick yourself into not calculating properly. Chess is a logical game but simplified logic brings you nowhere!
34...a3??
My opponent didn't spend much time on this move but I still had time to discover 34...Kc8! and see that I couldn't stop the a-pawn by normal means. As a matter of fact this nice move wins easily even against 35.f5 which seems to be my best trick.
35.Rh8+ Kd7 36.Ra8 Rh1 37.Ke4 Rxh4 38.Rxa3 Rh1 39.Rg3 c5?
This makes my task easier but I believe my position must be won anyway.
40.Rd3+ Kc7 41.Rd6 Re1+ 42.Kf3 Rf1+ 43.Kg4 Rg1+ 44.Kh5 Rf1 45.Kg4
45.Kg5 Rg1+ 46.Kf6 Rg4 47.Kxe6 Rxf4 48.Kd5 Rf2 49.c4 also wins quite easily but at this point it appeared that if I won this game my team would surprisingly qualify for next year's top league and I didn't trust my calculation skills at all.
45...Rg1+ 46.Kf3 Rf1+ 47.Ke3 Re1+ 48.Kf2 Rc1 49.Rxe6 c4 50.f5 c3 51.Ke2 Rxc2+ 52.Kd1 Rd2+ 53.Kc1 Kd7 54.Ra6 Rd5 55.e6+ Ke7 56.Ra7+ Kf6 57.Rf7+ Kg5 58.e7 1-0
A little later my team mate on board secured his draw and my team had qualified for next year's first league (provided that there is one as it quite likely may be replaced by a cup system).

Monday, December 22, 2008

Return to Tournament Chess












In April I will play Bangkok Chess Club Open. This is Bangkok Chess Club's 9th international tournament and I am convinced it will be just as well organized as the two I have played previously. Also the accommodation offered at Aisawan Resort and Spa no doubt will be a pleasure (and a bargain for the players).

The fact that the prizes are higher than ever with a top prize of approximately 2.000 Euros is of no direct interest to me. I would be a very poor man indeed if my income depended on my tournament results. However, an indirect effect may be a stronger field than usual. There are already four GMs registered and no doubt the lower ranks will soon fill up. Due to no fault of the organizers in several previous tournaments it has been a problem that quite a few of the stronger participants have never arrived. First there was the Sars epidemic, then the next year - a few days before tournament start - a top Russian trainer died and most of the titled Russians canceled. Another year there was a problem with visas for Myanmar players (who had some very attractive Elo numbers) and so on. I really hope that this year the organizers will face no such problems!

This will be my first serious tournament for at least four years, so I am quite worried about my chess form. My online blitz ratings are quite worrying unless I count only the peaks and the few tournament games I have played have been of a general low quality. I promise to not turn this blog into one more of the training diaries that can be found everywhere on the net but the subject may pop up in future entries.