Wednesday 21 October 2020

Extraordinary (double) Exchange Sac - Karjakin vs Radjabov

For a short period of time I (had to) play the very aggressive but always unpleasant sharp variations of the Sicilian Dragon. Actually, I once managed a nice victory with a (not 100% correct) but typical Knight-sac on f3 and exchange-sac on c3:

However, this post is not a very late kind of posing on any of my games - I am not that type of guy (and actually this is the first time I publish a victory of mine). It is about a very intersting "Bf6"-move by Black initiating an impressive double exchange sac that made me not only recall my own game but thinking about putting both online and share:


Bf6 - escaping the exchange of the dark-squared bishops and sacrificing the exchange: excellent thinking!

Thursday 6 August 2020

Kasparov versus Karpov

In the following game, Kasparov fights Kasparov and went on with Rd3.                                            My initial thoughts: Why would white want to do this? According to my understanding, bishop and knight are “somewhat preferable” over 2 knights. Yes, I know that this position anyway favours bishop over knight and I see that the white knight is currently lacking a good square and once the white knight re-positions, it might get swapped-off the board anyway. So yes, the exchange in general favours white and might be inevitable.  But why now?  Black´s queen and rook are (mis-)placed behind the rook on c5 – so why free the line for them?

Regardless of all the above, I would judge the position being absolutely equal, so does the machine. Just for the sake of it, I played h4 - still things are absolutely equal (+0.15 for white).

So why does Nd3 receive an exclamation mark?

Sunday 8 December 2019

Grand Chess Tour 2019 Finals - LIVE

Great commentators
Yesterday´s victory over MVL by Ding was interesting, indeed.
Let´s see how today´s 25min-games end!

Wednesday 4 December 2019

Tuesday 15 October 2019

When is the middlegame over and the ending starting?

Currently, I am working with a DVD series on "Winning Endgame Strategies" (Kuljasevic), Soltis famous "Grandmaster Series - Endings" as well as Shereshevsky`s "Endgame Strategy".   All of these experts hardly care about any theoretical lines. (Hardly; of course, there are a few standard rook endings to know. But that´s it. It is, by no means, about the 20, 50 or even 100 most important endgame techniques or something alike.) For them, it is all about plans and schematic thinking.

However, one question that strikes me: When is the endgame beginning?

According to Soltis - referencing to Belavenets, as soon as the queens have left the board. Whereas Romanovski´s definition depends upon the king: as soon as the king assumes an active role, he calls it an endgame. Glenn Flear (Practical Endgame Play - Beyond the Basics) defines it as the final phase of the game, where significant simplification marked the end of the middlegame. Many experts argue that it is about "reduced material being left on the board"...
Mednis tried it the other way around and approached it from the negative: Endgame starts, when it is not anymore about better development or space advantage (but about pawn structures).

Of course, each of the above definitions can be falsified easily. Nevertheless, none is completely wrong. No doubt, it is not clear cut and it doesn´t matter how many more (past and present) experts one consults, it remains somewhat fuzzy and foggy. It simply "depends"...👦

Its recognition, though, seems vital! And there is one thing they all agree - and even Wikipedia "knows" it: Middlegame and endgame show different characteristics and require different strategies! E.g.:
  • The king becomes (much) more active.
  • It is no longer about better development.
  • It is no longer about "more space".
  • Wing pawns gain in value.
  • Piece value in general changes (as opposed to the middlegame); especially pawns.
  • The better side shall trade pieces but not pawns (whereas in the in middlegame it is rather vice versa).
  • Initiative becomes vital.
  • It is hardly about precise calculation, but about decent plans --> schematic thinking.

Honestly, I never really thought about this (and definitely not the way indicated by the above bullet points). For me, endgames were always about deep and accurate calculations - something I am bad at; about pawn races and rooks to be placed on the right square.
Hence, better finish things off before the endgame or accept a draw, if in doubt.  Right?!
No, not anymore - thanks to the authors mentioned above!

"Studying the opening is just memorizing moves and hoping for traps, but studying the endgame is chess." – Joshua Waitzkin

Sunday 13 October 2019

Finding Plans

The following imbalanced position is a really nice one. The pawn-structure(s) as well as the exchange make it somewhat difficult to judge and evaluate. Especially the knight on b4 and the bishop on b1 have a rather strange, yet almost fascinating "love-hate relationship": The position of the knight assures that the bishop can´t move, while at the same time he is unable to move due to the bishop. Likewise, the bishop is both (passively) trapped and (actively) trapping! 
Yes, White exerts a vital pressure on f7, but Black can cope, whereas White cannot really reinforce this pressure. Even worse, as soon as White releases the pressure on the f-file, Black´s queen might enter the c-file.
White to move - but what/why/where/how?
Personally, I believe that the above position is amongst the most difficult ones I ever posted. Some within this blog require(d) accurate calculation and maybe, to be fair, a level of precise calculation I neither was nor will be able to bring to the board during a tournament match. Please check this link to see a pretty recent example of mine. (Even now, I struggle to calculate it all through to the end.)... But calculation, however, is one thing, finding a decent continuation, a plan, a totally different one!

So let´s get back to the above position.
Remember the once upon a time introduced concept of Wu Wei? (Of all the things I wrote within this blog, this concept is one of the rare things I never forgot and never had to remind myself of...) 👦
Well, sometimes it is not that much about what I can do to improve my position, but to first recognize that the other side is absolutely tied down and immobile! Whenever I see a Wu Wei position, the first thing coming into my mind is a king march. But within the above position, where could the king go to and, even more important, why? Not only couldn´t I answer these questions, but even after knowing the right plan, I have no clue how to make sure to come up with something similar in any of my future matches...😯

Let me try to get to the solution by asking some questions. (BTW: I was very tempted to try some sort of Socratic dialogue here, like Soltis does so well in his book "Grandmaster Secrets - Endings". But this would have made this post way too long...)

Which of White´s pieces is tied most and where would be a better post for it?
What is hindering that piece to move?
What could be done to overcome this hindrance?

And now giving a more concrete hint: Would it favour White to get the above mention "love-hate related" pair off the board?

If you got the point that a trade of knight versus bishop is good for White - ok (not too difficult).
If these questions guided you towards the bishop being better placed on g4 - pretty good (since at least I was stuck thinking that spotting g6 and h7 is aboslutely ok for the bishop; it is, but the lack of imagination is the point here).
NOW try to link the Wu Wei concept and the king march with the plan to either trade knight versus bishop or allow the bishop to get to g4. While at the same time not allowing Black´s queen to enter via the c-file.
If you are now able to see the White king on d2 and the rook an c3 - excellent!
(Then it is only a small step to start with Rf3, so that the king can start its crawl and the rook can land on c3.)

It is THIS combination of concepts and plans why I consider the above being one of the most difficult positions I ever posted.

For completeness sake: After Rc3, Black had to start shifting his queen on the 8th rank. This allowed White to launch a decisive attack on the h-file - via the move g4. (So, yes, White diverted from his original plan of getting his bishop to g4. But, hey, changing plans is part of the game.) At the right time, White shifted his rook to the h-file and finally was able to apply some tactics by hammering his bishop into g6: where neither a re-take with the h- nor f-pawn saved the day for Black. (And yes, the plan to control the c-file - without some fancy idea about where the bishop would be better placed - would have reached the target, too. )

Day 2 / part II

....and here we go: Earlier today I was happily announcing the concept of Wu Wei, and only a few hours afterwards I am NOT able to really apply it (Kasparov versus Vallejo Pons /2004) - white to move:

This is what I would call a Wu Wei position: White has any time in the world to regroup his pieces. There is no need at all for any hasty/brutal attacking gestures! Qc1! Who sees the plan behind it?