Sunday, July 21, 2013

Allegro, Allegro, Allegro!!!

As the World becomes a smaller place, city dwellers outnumbering country people, and time becoming a precious commodity, so it seems that 21st Century chess needs us to play at 21st Century speeds. At least there is a growing trend in tournaments with a faster rate. Or so it appears to me. I remember growing up in the UK and there being popular 30 minute, and 40 minute tournaments held monthly in London, either in Islington, or at the Barbican. Even those time controls now seem pedestrian.


Frankston Chess Club joined the ranks of organisers for weekend events, this past Saturday with what appeared a very successful 7 round allegro (G15) tournament. There was a good local turn out, and the event attracted players from other parts of the state, though I'm not sure any traveled from far outside the metropolitan area of Melbourne. But even that is good, as Frankston is situated about 40 km south of Melbourne's CBD with fairly easy access via car on the Eastlink, or on public transport via train. This distance will act as a deterrent to a lot of players unless they see something special to travel for. Luckily, it seems that was what was put on, and Frankston Chess Club will hopefully use their organisational skills to put on more weekend events to attract players down the peninsula.

The tournament was won by Chess Victoria President, IM Leonid Sandler who scored 6.5/7. Leonid is a fearsome fast player who has won the Victorian blitz championship in the past. Dimitri Partsi was the only player to hold Sandler, and Dimitri duly finished second on 6/7. It was very close after that, but Milenko Lojanica managed third with 5.5, though there were over 20 players within 1.5 of him. In all, over 50 players competed and it was great to see lots of prizes distributed throughout the field.
Melbourne currently has a gamut of 15 minute allegro chess tournaments. Firstly, most of the junior events run through the city are 15 minute tournaments. That is the interschool tournaments run by Chess Kids and Chess Victoria, and the monthly RJ Shield, and Rookies Cups. At the adult level, the Melbourne Chess Club has a weekly Saturday allegro event and most of the clubs run an allegro tournament at their club at some stage of the year for members to get away from the long play events for a short while. This is all good, and is encouraging juniors to play more and allows them to feel comfortable at adult clubs who provide this time limit, and may act as an introduction to the adult game. Meanwhile, the long play game isn't for everyone so it's good that there are alternatives for players around the city on a regular basis.

Coming up in August is an exciting event run by the Melbourne Chess Club, the Fitzroy Skittles. This is run as a knock out event, and depending on your rating you are assigned a number of points that you can lose throughout the event, the higher your rating the less points you are given. When you have lost the number of points that you were assigned to start with, you are knocked out the event. It is a fun system, and has become a fixture on the Victorian chess calendar. The MCC have already announced the inclusion of 2 IM's, Ari Dale, and ex Victorian Champion Igor Goldenberg, and the tournament usually attracts decent sized fields. In fact, I might see if I can get down to it this year.

So imagine my surprise when I get a facebook message from Frankston winner and CV President Leonid Sandler advertising an event on the same weekend in August. The Victorian Open Rapidplay tournament is to be held over the weekend of August 24-25 in Lorne, with sponsorship from a hotel group in the region. My initial reaction was what a great idea to have a chess tournament in the seaside resort of Lorne. Then when I realised it clashed with the MCC's allegro event on the 25th August I thought "who arranged that?" I could kind of understand if it was a different sort of tournament, perhaps an ACF rated longplay event, or even FIDE rated, but to hold 2 prestigious allegro tournaments at the same time seems a bit ludicrous to me.

So anyway, I had a bit of a dig at MCC President, Grant Szuveges about this, but he claimed ignorance of the organisation of the Lorne event, saying that it was all down to Leonid Sandler. Grant is not only MCC President, but also a committee member of Chess Victoria, so he should have known about the Lorne event. It is after all offering Victorian Open titles, whatever they are? Grant assured me he would not have agreed to hold such an event simultaneously with the Fitzroy Skittles, though to be fair he has been positive about the Lorne tournament, welcoming extra events on the calendar. I am less enthusiastic about the clash. I personally think the Victorian chess calendar is full to brimming with events, and as a result some events suffer from lack of numbers. A tournament in Lorne could be a great fixture but not at the same time as another tournament featuring virtually the same product nearby which has been established for a number of years. To my mind it is simply bad scheduling, and as much as I'd like to see an event on the Great Ocean Road succeed, I'll be pointing my students towards the already established Fitzroy Skittles at the MCC.

Friday, July 19, 2013

Hennig Schara Gambit

Everyone has favourite systems, and we all try to defend openings that get a bashing. Even some pretty decent openings come in for a bashing every now and again. Take the King's Indian Defence, or the Sicilian Dragon. Then again, if you're going to play a fighting opening, then you will also have to fight to defend your opening's reputation.

The system that I have a soft spot for is the Hennig Schara Gambit. When I was a young player, Kasparov was not yet World Champion and was playing the Tarrasch Variation of the Queen's Gambit (among other fighting systems). It was back then in the mid 80's that I first really became aware of the Tarrasch and the amazing piece play that black can generate at the expense of pawn weaknesses. Certainly at club level a player who is good with active pieces should consider openings such as the Tarrasch which offer excellent play for the expense of a pawn.

Black immediately challenges the centre, and after 4.cxd5 exd5 we will have a position where white can give black an isolated queen's pawn. In fact, positions with an isolated queen's pawn for black were those championed by Kasparov on his way to the World Championship in 1984. He successfully used the defence against Beliavsky, Korchnoi and Smyslov, and even used it against Karpov in their first match in 1984. Here is (essentially) the deciding game in the 1983 Candidates Final. It left Kasparov 8-4 ahead against Smyslov, needing only a draw to progress which he duly scored in the next game.



It wasn't until the 1990's that I became aware of an interesting sideline of the Tarrasch, the Hennig Schara Gambit. Instead of accepting an isolated queen's pawn, black sacrifices a pawn again for great piece play. I didn't really take it too seriously at first as I can't really say I am that inspired by gambit openings generally. I'm more the sort of player who grabs poisoned pawns and tries to hold on to them! However, I was fully converted by 2 articles written by Irish correspondence GM Tim Harding. Harding has been writing a monthly column at chesscafe.com since the mid 1990's and many of his early columns were about odd openings that tend to crop up more often in correspondence play that over the board. His articles on the Hennig Schara (no 1, and no 2)were beautifully written and were good enough to make me believe in the opening. I've used it on a number of occasions, and have every intention of trying it out some more. As pawn sacrifices go, it is very enterprising, and there is no easy way for white to get anything out of the opening. The mainline goes 1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 cxd4!? [The Gambit] 5.Qxd4 Nc6 [While white's queen grabs a central pawn, black is able to develop quickly and aggressively] 6.Qd1 exd5 7.Qxd5 [Now white will be a pawn up out of the opening, but with the centre wide open it's anybodys game] 7..Bd7 [Black can play a pawn down in a queenless position as well which is also interesting. 7..Be6!?] 8.Nf3 Nf6 9.Qd1
So here's the main tabiya. After 9..Bc5 black has excellent minor piece deployment, and to add a further random feature to the game, black most often castles queen side to whites king side castling. My own favourite game, a win against ex Australian Champion Doug Hamilton was in this opening, but rather than singing my own praises, take a look at this recent game where a 2600ish GM gets smashed by a 2300ish player. Enjoy :D

Tuesday, July 16, 2013

Melbourne Clubs Round Up

As this blog is essentially a personal thing, I tend to focus mainly on local chess which I am familiar with and which means much to me. So here's a brief round up of what's happening around Melbourne at the moment.

Frankston Allegro on July 20th

Sorry to plug my own club first, but hey that's life! Melbourne's newest chess club, Glen Eira Chess Club has been closed for a couple of weeks but will reopen on this Friday, 19th July with a social night and some blitz. Soon after that we want to start with some long play round robin events and our aim is to build our membership. To help with this we have a brand new venue, the excellent Carnegie Library. Like before, we will run a junior club from 6 pm - 7 pm and then an adult club after that. We welcome all comers to our friendly little club! (Coffee rating of the neighbourhood is 4/5 with some really good cafes in Koornang Road)

The club that has been my home for the past 5 or so years, the Melbourne Chess Club, has started a new Monday night FIDE rated tournament, the 7-round Malitis Memorial. Congratulations go out to IM Mirko Rujevic for dominating the last event, the City of Melbourne Open, and he is playing in this event as well. The MCC is the only club open 7 days a week in Melbourne, so there is plenty for everyone whether you are a Grand Master or a beginner. The allegro tournaments on Saturday afternoons maintain their popularity. Going back to the Malitis Memorial, the first round happened last night and the top 2 seeds, Rujevic, and Malcolm Pyke overcame tricky juniors (Finley Dale and Jason Chew) to start their tournaments off with wins. However, there were plenty of upsets on the night, though as players improve rapidly it is almost harsh to call their victories upsets when their rating may be well below their actual playing strength. I don't really want to get too much into the first round, but I would like to wish Tom Kalisch a good tournament return to the MCC :) (Coffee rating of the neighbourhood 5/5 with some of the best cafes around Melbourne)

Downies Auctions recently sold these for $75. Was it an MCC member who bought them?

Box Hill Chess Club have their Tuesday night tournament starting tonight. In fact it should be underway as I write this. The Winter Cup is a 7-round swiss and is supposed to be run at the same time as the Box Hill Masters which is a usually a 10 player round robin event. However, I haven't seem anything about this which is a shame as I have fond memories playing in it, and I truly believe that there aren't enough round robin events at the moment. Box hill Chess Club do have 'Grades' tournaments starting this Friday, and possibly this is taking over from their Masters event, though I don't know. (Coffee rating of 4.5/5 though Maling Road's Post Office Cafe is a 10/10 by itself)

Noble Park Chess Club is gradually taking centre stage in Victorian Chess as their tournaments keep attracting large and strong fields. Noble Park are currently running their Masters event which is a 10 player round robin which is pretty strong. Top seeds are FM Chris Wallis and FM Dusan Stojic but these guys will have their work cut out to win this very tough event. Alongside this a challengers event is being run, with the winner guaranteed a spot in the following year's Masters. This promotion based system is really good for chess development, and Noble Park should be applauded for using it. (Coffee rating hmmm...no comment :D)

Further from the centre of Melbourne, this Saturday sees an impressive looking allegro being held at Frankston Chess Club. Like other suburban clubs such as Croydon and Hobson's Bay, Frankston is quietly doing the right things by their members, which is basically listening to what the people want and growing in stature because of it. All these clubs have a friendly atmosphere, and while all the players are fiercely competitive during the games, the clubs definitely cater more for people who prefer a social atmosphere. Although I won't be able to go to the allegro this Saturday, it already looks to be shaping up to be an excellent event. Meanwhile Croydon Chess Club have just run their annual weekender and what an amazing success it was! Croydon Chess Club have decided to run 1 weekender a year and run it well. The tournament had a capacity of about 50 players and the number was reached with an IM and 4 FMs in the field. In the end, John Nemeth and FM Dusan Stojic, both of Noble Park CC, shared first placed on 4.5/5. On the other side of town, Hobson's Bay Chess Club have now announced their annual weekender, the Best in the West tournament. This has always been a popular event, and it is good to see it happening again this year. Hobson's Bay CC have had to deal with the recent death of their influential member and organiser, Peter Caissa who will be sadly missed by the whole Victorian chess community. I'm sure that this year's Best in the West will be a fitting tribute to Peter.
(Coffee ratings: Frankston/Croydon no data available; Hobson's Bay 3/5 Altona has some ok coffee, though when the tournament was in Yarraville I'd have pushed things up to 4/5)

Sunday, July 14, 2013

Monet on a Sunday

It's back to work to me tomorrow after a week off during school break. I have a relatively easy lead in with only half a normal week coming up as some schools start their chess programs in week 2 of term. Anyway, today was my last day off and I was blessed to share the day off with my wife, Caroline, so we decided to head to the National Gallery of Victoria to check out the Monet's Garden exhibition. I have seen some work of the Impressionist in Paris and New York, but never this much in one place. To have an exhibition devoted to just Monet, his life and work, was amazing. There was familiar work, but some stuff which I didn't know about and that really impressed me.
Springtime Through the Branches (courtesy Claude Monet Gallery)

This painting of the Clichy region of Paris appealed to me in it's composition (and as a chess player who has played at the annual Clichy Open, it took me back to the time I was there). In fact, the philosophy of Monet seems to be for the artist to provide an experience for the audience, and his paintings are images of light and movement. Looking at the image above, the trees in the foreground aren't still, and Monet's beautiful brush work helps us to feel the breeze that he obviously felt while painting this scene.

Monet is best known for the paintings of his gardens at Giverny, the Japanese Bridge and the water lillies series. Seeing so many of these in the exhibition gave us a great feel for this amazing garden, and the final room had a fantastic wraparound film of the last day of the season of his garden. Seeing the house with its distinctive green shutters, the overhanging archway for his rose garden, the lake with lillies and bridge, gave the exhibition and Monet's paintings of his garden a context, and gave us, the audience, a chance to see his inspiration.

The vibrant reflections that make the lake and water lillies so wonderful, and the use of light and texture were major themes of the exhibition. Earlier in his life, Monet spent time in London which he loved because of the fog: ‘I love London much more than the English countryside; yes I adore London … but what I love more than anything is the fog’

Reflections on the Thames (courtesy of allposters.com)
The whole experience took no more than a couple of hours, and seeing so many of these masterpieces, and finding out about Monet's life was a very pleasant way to spend a Sunday afternoon. I feel I have a better understanding of Impressionist art, and have even looked online at some of his contemporaries, friends, and influences. So not only did the exhibition provide pleasure and information but also, for me at least. inspiration to look more into art as a whole, a subject I've paid little attention to over the years.

Saturday, July 13, 2013

A couple of Ideas in the Opening

I've been easing myself into opening theory by looking at Michael Yip's Budapest Chess News (BCN). I've had a breeze through some games, and a couple of ideas have come to me from just looking briefly at his database.

The first position that grabbed my attention came from a Bird's opening. Now, I'll admit that I know very little about Bird's Opening (1.f4), but the game Capaliku-Hambleton Forni di Sopra 2013 needs very little theoretical knowledge. The game starts with the moves 1.f4 d5 (I'm with it so far) 2.b3 Nh6
For those of you who don't like the usual opening ideas, this should appeal! There have actually been some games played from a reverse position to this (ie, the Dutch) starting 1.d4 f5 2.Nh3. I admit to knowing nothing about this line either! Anyway, the Hambleton game continued 3.Nf3 Bg4 4.e3 Nf5 5.Bb2 e6 6.Be2 Nd7 7.0-0 Be7 8.Ne5 [8.c4 seems more in keeping with the Bird's generally] 8..Bxe2 9.Qxe2 Nxe5 10.fxe5 c6. Obviously, there could have been different moves up to this point, but this is the position that interested me.
So as white what should be played here? To me, white has 3 main options, 11.c4, 11.d4, or 11.e4. In the game 11.d4 was played, but I see more point in advancing on the central light squares. 11.c4 with the intention of developing Nc3 behind it seems a pretty reasonable idea. 11.e4 looks to undouble the central pawns. A sample line is 11..dxe4 12.Qxe4 Bc5 13.Kh1 Qg5 14.d4 Qe3 15.Re1 Qxe4 16.Rxe4 Rd8 17.c3 with a playable position for both sides.
Anyway, back to the game and after 11.d4 the game continued 11..0-0 12.Nd2, when Michael Yip suggests 12..Bg5 as an improvement over the game continuation of 12..Qa5.
I think it shows the strength of BCN that Michael Yip is prepared to stick his neck out, and try to improve on the games of strong players. Studying games, and by studying I mean critically analysing them, is the best way for players to improve their knowledge. It is hard work, but most rewarding. It is a good idea to work through some great annotated games so as to get an idea of what is expected in analysing a game. Try game collections by Botvinnik, Alekhine, or Karpov, or tournament books such as Zurich 1953, or Piatigorsky Cup 1966 to see some great annotations. When you've looked through games analysed by top players, then have a go at doing it yourself. The more you do it, the better you will get! Let's look at this move 12..Bg5!?

 - 13.Rf3 [Yip mentions this] 13..Qa5 [13..c5!?] 14.c4 f6 with advantage to black according to Michael, and I'm not arguing with him about this.

- 13.e4 [This is the move that interests me, because if white can rid himself of his weak e3 pawn, then his position shouldn't be that bad. Michael doesn't mention this move] 13..Ne3 [I don't think this is necessarily an easy move to find, but others don't impress: 13..Bxd2? 14.exf5 and white has great attacking chances on the king side; 13..Be3+ 14.Kh1 Nxd4 15.Qxe3 Nxc2 16.Qc3 Nxa1
and here, white has the excellent 17.Ba3!! (thankyou Stockfish) taking control of the key diagonal. In the case of 17.Rxa1, black has 17..Qe7 followed by c5; 13..dxe4 14.Nxe4 Nxd4 15.Qg4 Be3+ 16.Kh1 and white has great activity, especially directed at black's king in compensation for the pawn] 14.Rfc1 f5! [Trying to open the f-file now that white has taken his rook away] 15.exd5 Nxd5 16.Re1 Bxd2 17.Qxd2 f4
 So here's the end of my analysis line. Black is probably a bit better, because the knight seems better than white's bishop. Saying that, if white can manage a c4 and d5 type break then anything could happen. Of course, if white does play c4, then d5 will be almost obligatory, or the d4 pawn will be weak, but I think that both sides would feel they have a chance from this position.

 I have found Michael's analysis and work very useful as I ease myself into the crazy world of opening theory. In fact, I have to admit that it's a bit ironic that my interest in opening theory comes just after I give up playing internationally rated chess. Oh well, with some work on my openings I might be able to make a big come back at some stage :D

The Najdorf is a favourite with theorists, and as such is a nightmare for someone who is out of the loop. For example, the last time I looked at any Najdorf theory, the variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 Nbd7 was considered a bit dubious for black. Now it seems like a viable alternative. I seem to remember white plays 7.Bc4 hoping for possible sacrifices on e6, f7 or d5. So I was a bit surprised when the game Paravyan-Mekhitarian Golden Sands 2013 continued 7..Qb6 [I think 7..Qa5 is the main move here] 8.Qd2 Qxb2 9.0-0 e6
Here white has the thematic sacrifice 10.Bxe6 [Not played in the game, or mentioned by Micheal Yip] 10..fxe6 11.Nxe6 [when black must lose time as white threatens to fork on c7] 11..Kf7 [11..Qb6 is strongly answered by 12.Nd5 when black has the miserable choice between 12..Qa7 or 12..Nxd5 13.exd5 when white's rooks will come to the b and e-files with devastating effect]
And now white has the fantastic 12.a3!! threatening to trap black's queen.

Now I'll be honest, I didn't find the 12.a3 move but I did find 10.Bxe6 while looking at the game. I checked the move with my engine, which also liked it, and asked chessbase 12 to find the novelty in the position. To my delight, 10.Bxe6 has been played before in an online game on the playchess server. Amazingly, the white player did find the 12.a3 move in the game, though the 2600+ rating suggests he wasn't a patzer like me. Anyway, the moral of the story is that studying openings can be fun, is not necessarily about memorising ideas, but rather about finding themes, and tactical ideas which prevail in certain openings. Once this understanding has been mastered, or while it is being mastered, variations can be examined, and opening knowledge can be built up.

Thursday, July 11, 2013

Amazing Online Resource

Yesterday, I tried my hand at opening writing which went pretty well besides putting an apostrophe on the wrong place. I guess like anything else the more one practices, the better one will get, so I'll keep taking a look at openings in the future. One thing I am determined to do is get to grips with the Najdorf. It's an opening that I used to play, and I have tried to play on the white side, though certainly not from a critical perspective. To be honest, I'm not that interested in the Najdorf (or any other opening for that matter) to buy a book on the subject. I prefer to learn openings from playing, and analysing games. I might then use a monograph as a reference once I have some ideas of my own. I've always believed that this method avoids the hype and dogma that opening books invariably contain, and keep me thinking for myself and looking for positions that attract me, rather than positions which are supposed to be theoretically preferred. This is important as a good position and a comfortable position are not the same thing. Some players prefer static advantages, whereas others look for dynamic features in positions.

One person who is putting a lot of work into their chess is Canadian Michael Yip. Yip lives in Budapest and writes his fantastic blog, Budapest Chess News (BCN). If you haven't checked it out yet, then definitely take a look. Yip writes mainly about chess in his native Canada, and his residence of Hungary. But there is so much more than that. He produces a monthly file with heavily analysed games, that can be downloaded from Kevin Spraggett's site. He also has 3 other blogs, all about opening theory which he updates almost daily. These blogs cover 1.e4, 1.d4, and other openings. This tremendous work is absolutely free, and is well worth a look for anyone wanting to start out with some theoretical knowledge. I, for instance, will be using Yip's coverage of the Najdorf as my basis for studying this opening.

So today, I downloaded the July issue of BCN and haven't yet had a good look through it. There are about 120 heavily analysed games in the file that is stored in chessbase format. Take a look at Yip's coverage of the Najdorf between Caruana and Nakamura from the recently concluded Tal Memorial.




This is an amazing dedication to chess and chess writing, which inspires me to do more as well. I doubt that I will be able to put as much into studying the opening of the game as Michael Yip has, but I still intend to do more than I was previously doing. Watch this space!

Wednesday, July 10, 2013

Four Knights Opening

I was going to look at some Najdorf theory, but it really is daunting to get into if you haven't looked at any over the past 25 years. Unfortunately I gave up the Najdorf just as Nunn and Short were pioneering the English Attack which had been known as the Byrne System before the 1980's. The latest issue of New in Chess magazine contains one Najdorf game, an English Attack between Anand and Topalov from the recent Norwegian super tournament. In the magazine, the first 14 moves get no commentary which doesn't really help me understand the nuances of this opening. So I've decided to leave the Najdorf for another day when I feel up to the challenge of wading through the reams of games and analysis.

Instead I saw a game from TWIC which featured the h3 move that Kramnik used last year in the Scotch Four Knights Opening. The position comes after the moves:

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nxd4 Bb4 6.Nxc6 [Someone fell for 6.Ndb5? last week which works well in the Sicilian Pelikan, but here loses material after 6..a6 when white's best is to drop back to d4 with his knight, losing the e4 pawn] 6..bxc6 7.Bd3 d5 8.exd5 cxd5 9.0-0 0-0
The mainline here is 10.Bg5 which seems like a natural enough move, but last year Kramnik used the move 10.h3 against Aronian in the 2012 Tal Memorial. That game ended in a draw, though it seemed as if Aronian was under a little pressure. Since then the line has come under top level scrutiny, with Karjakin, Morozevich, Wang Hao and Anish Giri playing this position for white among others. I have a database of recent games, and in 100 games from September 2012 until now white has scored 59% with the move 10.h3. Funnily enough, running Stockfish for 10 minutes on my laptop just brings up a level score for this position, -0.08 with 10..c6 as it's main move and 10..Re8 as the main alternative. Well these are 2 of the top 3 moves, but neither score particularly well for black. The move that is performing the best for black at the moment is the "pass the ball back to white's court" 10..h6. The obvious idea behind white's tenth move is to prevent black from using g4, especially for his bishop. So the prophylactic 10.h3 secures white's queen along the d1-h5 diagonal, and means that white will develop the queen to f3 most likely. So by playing 10..h6, black deprives white of the most natural move for their dark squared bishop, g5. White can still develop the dark squared bishop to f4 which is a pretty good square. Usually white develops the queen first 11.Qf3.
I guess this position is a vital one to understand. White has the better structure and white's pieces seem more centrally directed. After white plays Bf4 and connects rooks it will be time to plan on how to bring about the demise of black's centre. Because black's central pawns, whether they are on c6/d5 or c5/d5 are annoying and holding on to a lot of space. Black may have to work a bit harder with the pieces to coordinate them properly, but black's pieces have great shelter from the central pawn mass. Black has 2 natural files for the rooks, the semi open b-file, and the open e-file, and the possibility, at least temporarily, of shattering white's queen side by exchanging on c3. Saying that, giving up the bishop pair for pawn weaknesses is not a risk free strategy in this type of position.

The most high profile game played from this position is the all GM clash Quesada-Bacallao Cuban Ch 2013.
11..Re8 12.Bf4 c6 [interesting that black does not trade dark squared bishops by 12..Bd6. This plan seems to be scoring well for white. Also the c6 pawn prevents white's knight from using b5] 13.Ne2?! [Now I don't want to start criticising GM's for their moves (lol) but 13.Rfe1 seems to make a lot more sense, challenging the e-file, as played int he game Zelcic-Bayer Austria 2013. In that game, white simply centralised his rooks, and only regrouped his knight after black had played Bb4-d6, so as to recapture on f4 with the knight or transfer it to the king side] 13..Ne4 [Throwing the knight into the centre, taking advantage of white's last move. Also notice that white cannot develop a rook to the e-file for the moment] 14.Rad1 Qf6 15.c3
Black's bishop needs to retreat, but where to? In the game it dropped back to f8 but it certainly could have stayed more active on either c5 or d6.
15..Bd6 [and white can hardly play 16.Bxd6 Qxf3 17.gxf3 Nxd6 with an excellent game for black] 16.Rfe1 and black can force a similar structure to the last note after 16..g5!? 17.Bxd6 Qxf3 18.gxf3 Nxd6 and black is better
15..Bc5 [Covering both d4 and f2, though the down side is that that black will not be playing Rb8 in a hurry] 16.b4 Bb6 17.a4 [This queen side expansion is probably what black was wary of in the game] 17..a6 [17..a5 allows white to push 18.b5 undermining black's centre; 17..g5 is not so good here as after white's bishop retreats, a queen swap will not favour black eg. 18.Bh2Qxf3 19.gxf3 Nf6 20.a5 Bd8 and black's pieces have been pushed uncomfortably backwards] 18.c4! I think this move keeps white in the game eg. 18..Be6 19.c5 Ba7 20.Be3, a nice regrouping taking control of the d4 square and keeping the balance, though maybe not much more.

All in all an interesting little look at what seems an innocuous move. I'll leave you with a database of games :)