Showing posts with label Chess games. Show all posts
Showing posts with label Chess games. Show all posts

Monday, August 30, 2021

New York Times smear piece about Karjakin - true or not?

 The racist "newspaper" New York Times, once gladly a mouthpiece of Adolf Hitler (see "Buried by the Times") and Josef Stalin (see Walter Durante) that denied the holodomor, and in the past years running the unhinged conspiracy theory that Russia helped Donald Trump (who has a jewish family, fitting with the earlier NYT smears) become President of the United States with election fraud, now expanded its racist smear pieces into the world of chess, "exposing" both Sergey Karjakin and the First Saturday tourneys in Budapest as supposed "grandmaster norm factories".


After this utter crap was re-published in the German magazine "Schach", which obviously fell for the propaganda surrounding the newspaper that portrays it as trustworthy, I want to let readers decide on their own which parts of the story are true and which are made up. Who knows, maybe for once some parts of the story hold up. After all, Karjakin is a bit suspicious. At least the German magazine, as opposed to the original author, did its due diligence and reproduced two of the games and footnotes that hint towards the hit piece having a core of truth.


https://www.nytimes.com/2021/07/13/sports/chess-karjakin-mishra-grandmasters.html

Wednesday, May 5, 2021

Schach-Fan issue 10 with Hornecker/Minski study

 The new magazine "Schach-Fan", which is aimed at beginners to improve their tactical skills, features the study by Martin Minski (composition) and me (idea) from "Schach", October 2016.


Interested readers can subscribe to the free magazine at their website http://schachwoche.de/ where also all issues are available for download. The magazine is in German, but it should be easy also for foreign readers to follow the diagrams and solutions.

Sunday, May 31, 2020

High-level online checkmates (I)

Two beautiful checkmates happened in online chess recently.

In the Lindores Abbey Challenge, Wei Yi lost to Sergey Karjakin by not seeing a mate in 1.



Meanwhile, or rather a few days later, Brazilian grandmaster Luis Supi beat Magnus Carlsen with a fierce attack in an online blitz game.

 1. e4 d5 2. exd5 Qxd5 3. Nf3 Bg4 4. Be2 Nc6 5. Nc3 Qd7 6. h3 Bxf3 7. Bxf3 O-O-O 8. O-O Nd4 9. a4 Kb8 10. Nb5 Nxf3+ 11. Qxf3 a6 12. c4 e5 13. d4 exd4 14. Bf4 axb5 15. axb5 Bd6 16. Ra2 Qf5 17. Rfa1 Kc8 18. Qc6 1-0

I had added the appropriate diagrams to Chessgames in the comments where "dehanne" posted a video link of the game first.

On a Twitch clip, Magnus is seen congratulating his opponent's final move as "awesome".


White to move (before 18.Qc6)

Thursday, March 26, 2020

FIDE stops Candidates 2020 (uncommented statement by President Dvorkovich)

Today, the government of the Russian Federation announced that starting March 27, 2020, Russia interrupts air traffic with other countries without indicating any time frames.

FIDE can not continue the tournament without guarantees for the players' and officials' safe and timely return home. In this situation and on the basis of clause 1.5. Rules of Candidates Tournament, the FIDE President decided to stop the tournament. It will be continued later, with the exact dates to be announced as soon, as the global situation related to the COVID-19 pandemic will allow. As it was stipulated by the special rules agreed with the players before the start of the event, the results of the 7 rounds played remain valid, and the tournament will be resumed in the same composition starting with the games of the 8th round. FIDE is grateful to the players, officials, volunteers and the entire team of organizers, including the Chess Federation of Russia and the main partner of the tournament - SIMA-Land.

Sincerely,
Arkady Dvorkovich,
FIDE President


(source: ChessBase)

Friday, March 20, 2020

Paul Tröger loses, Vincent Keymer wins

Chess, like many things in life, is enhanced by pattern recognition, if those patterns are applied correctly. While recently browsing through chess magazines, I recognized that I had seen a discovered attack that happened there in a book by Paul Tröger.


Tröger - Rosen
Bad Pyrmont 1976, German championship
White to move

Paul Tröger started with 2 out of 2 points, and the third game saw him in a drawn endgame where we "tune in" with the diagram. Having given the check on b6 twice already, all he had to do was write down the move Rb6+, stop the clock and call the arbiter to claim a draw. Instead he played 1.Rb8?? and had to resign after 1.-R:c4! 2.K:c4 d5+ and eventually lost. Rosen added insult to injury, telling Tröger that he only didn't offer draw because he was sure Tröger would eventually play Rb8. (Source: Paul Tröger: "Von Böcken und dicken Hunden". Bamberger Schachverlag 1984)


Grandelius - Keymer
Wijk aan Zee 2020
White to move

The young German talent Vincent Keymer had a great performance at his debut in Wijk, sharing the 6th place in the "Challengers" with Sarin and winning 19 Elo with a performance of over 2600. Nils Grandelius helped out by playing 44.Ra8? c5! 45.Ra6+ Kf5 46.Ra5? instead of still drawing by 46.Rf6+ Kg5 47.Be5. After 46.-f3+ 47.Kf2 Rh2+ 48.Kg1 f2+ White resigned.

Monday, June 25, 2018

Friday, March 30, 2018

Open source chess engine tries to reproduce AlphaZero algorithms

https://www.reddit.com/r/chess/comments/882jr8/leela_chess_zero_the_fork_of_leela_zero_for_chess/

Some people here probably followed Deepmind's AlphaGo, then AlphaGoZero and finally AlphaZero's achievements. However Google did not release the weights for all thoses networks, so a community has formed trying to reproduce and maybe improve the AlphaZero engine.
To do this, a distributed effort to play self-play games has started, and the training is done on a single powerful computer (It can update the weights in about 5 hours currently).

The developers also allow everyone to play against their engine:
http://play.lczero.org/

Further information can be found on the website  http://lczero.org/ which necessarily is rather technical.

And while people like Magnus Carlsen struggle to reach 2850 Elo, the engine struggles as well... to reach 4250 Elo. Yes, that is a 4, not a 3. But how "real" that number is, is the real question.

Friday, March 9, 2018

My favorite candidate 2018 is Ding Liren

Just for the record, my favorite candidate 2018 is Ding Liren. I believe that he would be able to give Carlsen a highly interesting match. Could he beat Carlsen? Only if the stars align. But then in spectacular fashion.

Saturday, October 28, 2017

London 2017 Chess Classic Press Release

With explicite permission of John Saunders, who among other things also is press officer for London 2017, we publish hereby the press release including the players of London 2017. As I would need to use cryptography, such as zip files in images, to upload it directly here, a link is instead provided to the files on my Dropbox. Enjoy!

https://www.dropbox.com/sh/3if5yj97hknwuwr/AACj706xGE1wsQiso7oUlMvja?dl=0

Saturday, August 19, 2017

Did Kasparov destroy his own legend? An opinion piece.

The Rapid and Blitz in St. Louis is over, and we have seen that Kasparov still belongs to the top players of the world - in the top 20 to top 30 in any case, possibly even in the top 10 - but he is not the eight-eyed monster that sees everything anymore. He is not the Linares winner of 2005 anymore. He is not the world champion anymore. Kasparov has demontaged his own legend, he has become a mortal, an aging chess master over his zenith. He still is a great player, and for many having the strength that Kasparov showed in St. Louis is a target they can only dream of, but he now is one of many, not even a primus inter parem, far less the number one.

The world champion who played David Braben's Elite in his free time has matured into a political activist for whom chess has become a hobby, just like Elite back then. Maybe it is time to train hard, to have the greatest comeback in chess history. Or maybe it is time to just enjoy chess, play some tourneys for fun, win some opens, retire from politics and enjoy life.

Or maybe it is time for something new. Who knows what is Garry's next invention? The video game loving boy of the 1980s soon ventured into chess software and hardware, having an own series of chess computers. Will the mature Kasparov use his influence once more to find ways to improve chess for the general public? Now he is a politician, and countries that teach chess in schools have proven it to be successful for the social development of children. And in fact Kasparov already worked towards chess in schools. Why not again?

Garry, you might not be the best anymore. But you are still a legend. Use it for the best!

Saturday, September 17, 2016

How to win any chess game at the first move - but lose the full point!

http://matplus.net/start.php?px=1474101069&app=forum&act=posts&fid=prom&tid=1898&pid=15007#n15007

(1) Posted by Siegfried Hornecker [Saturday, Sep 17, 2016 10:27]; edited by Siegfried Hornecker [16-09-17]

Major gamebreaking oversight - winning any game in the first move if the opponent is late (and still get a 0:1 result)


 QUOTE 
5.1

a. The game is won by the player who has checkmated his opponent’s king. This immediately ends the game, provided that the move producing the checkmate position was in accordance with Article 3 and Articles 4.2 – 4.7.
 QUOTE 
7.2

a. If during agame it is found that the initial position of the pieces was incorrect, the game shall be cancelled and a new game shall be played.
If during a game it is found that the chessboard has been placed contrary to Article 2.1, the game shall continue but the position reached must be transferred to a correctly placed chessboard.


So the simple way to win is to set up any position where you can checkmate in one move as the starting position and make that move. This ends the game, so the starting position can not be corrected anymore or the game cancelled since the game is already over (note how it says "during"). Since the opponent is late, he also won't have checked the setup of the pieces, so you have been able to set it up the way you want. If you would have Black usually, just assign White to yourself, as...

 QUOTE 

7.3

If a game has begun with colours reversed then it shall continue, unless the arbiter rules otherwise.


...this obviously also only applies when a game has not ended yet.

Articles 3 and 4 regard the movement of pieces, but nothing prevents you from starting from a wrongly set up board and make a legal move that immediately checkmates. This is a major oversight that I did not see in action yet, but it is a theoratical possibility to cheat in accordance with the rules.


Of course, you have one small issue...

 QUOTE 
11.1

The players shall take no action that will bring the game of chess into disrepute.


So the arbiter can...

 QUOTE 
11.6

Infraction of any part of Articles 11.1 – 11.5 shall lead to penalties in accordance with Article 12.9.


 QUOTE 

12.9

Options available to the arbiter concerning penalties:

warning
increasing the remaining time of the opponent
reducing the remaining time of the offending player
increasing the points scored in the game by the opponent to the maximum available for that game
reducing the points scored in the game by the offending person
declaring the game to be lost by the offending player (the arbiter shall also decide the opponent’s score)
a fine announced in advance
expulsion from the competition.


...increase your opponent's score to 1 and yours to 0. But you still won, even though the result shows the opposite! And that counts. Or not?

Tuesday, March 15, 2016

An inappropriate comparison?



Garry Kasparov vs. Veselin Topalov
Wijk aan Zee 1999
White to move

Kasparov played 22.Sc3-d5!! and won in spectacular fashion.


Lee Sedol vs. AlphaGo
Google Deep Mind Challenge 2016 (game 4)

Lee Sedol just has placed his stone at L11 (see red marker) and won in spectacular fashion.
"Hand of God"


PS, 16 March 2016: While I searched for the game, I used the term "Pearl of Wijk" which was used in the German literature - or possibly I confused that. It holds another interesting game as result.

Wednesday, March 9, 2016

Two matches - different, yet similarly writing history

We would like to draw attention to two top-class matches where history is about to be written.

1. The Women World Chess Championship match might see Hou Yifan, who is currently leading 4:2 against Maria (Mariya) Muzychuk, regaining her title again, thus breaking the record of Elsiabeth (Elisabeta / Jelisaweta) Bykowa, who regained her title once after losing it. However, in total years of holding the title, Hou Yifan is far behind the record holders.

2. The Go match of Google's AlphaGo vs. Lee Sedol saw the spectacular loss of Sedol in the first game. With up to four more games to go, this could be anoher success for computer game science after Deep Blue beat Kasparov in chess (1997) and Watson beat Ken Jennings and Brad Rutter at Jeopardy (2011).

EDIT, 10 March 2016: Both Hou Yifan and AlphaGo won again, making the matches now a 4:2 score (Hou Yifan vs. Muzychuk) and a 2:0 score (AlphaGo vs. Lee Sedol).

EDIT, 15 March 2016: Hou Yifan eventually won with 3 victories at 6:3 against Muzychuk. Congratulations! AlphaGo preliminary won 3:0 against Lee Sedol, but as the games went on there regardless, Lee Sedol defended humanity's honor with a spectacular win in the fourth round. I still will welcome our machine overlords. ;-)
(You can see Lee Sedol's "hand of god" move here: https://youtu.be/yCALyQRN3hw?t=3h10m20s)
The machine won the last game, so the final result is 4:1, but Lee Sedol's one win will go down into history.

Tuesday, March 10, 2015

An incredible move

We would like to draw attention to the game of Denis Khismatullin vs. Pavel Eljanov, played on 6 March 2015 in the European Individual Championship in Israel. After 43 moves, the following position was reached:


 White to move

There are five possible moves for White: 44.Ra1, 44.Re1, 44.f4+, 44.h4+ and 44.Qe7+. Let us analyze them.

  • 44.Ra1 Rf6 45.f4+ Kh4 46.Qh6+ Kg3 47.Qg5+ Kh2 48.Q:f6 Qe2 mate (or 48.Qg4 h5 49.Qf3 Q:c6 or even stronger 49.-h4! and Black wins).
  • 44.Re1 Rf6 45.f4+ Kh4 46.Qh6+ Kg3 47.Qg5+ Kh2 48.c7 Rc6! and Black wins, or 48.Q:f7 Q:g2 mate.
  • 44.f4+ Kh4 45.Q:d6 Q:d1+ 46.Kf2 Qe2+ 47.Kg1 Q:e3+ 48.Kh2 Qg3+ 49.Kg1 Qe1+ 50.Kh2 leads to perpetual check.
  • 44.h4+ Kh5 45.g4+ K:g4 leaves White in a difficult situation, where 46.Q:f7!! Q:d1+ 47.Kg2 leads to a draw, according to the computer.
  • 44.Qe7+ Rf6 45.f4+ Kh6 46.Qf8+ Kh5 is dangerous for White, although here also 47.Kg1!! draws, according to the computer.
It seems obvious that White should play 44.f4+ with a rather easy draw then. Of course, there is no possible way to win.

It did not matter that day. Khismatullin found an impossible way to win.
44.Kg1!!
Wait, what? The rook hangs with check, Black has an incredible passed pawn, and he still is lost? Indeed. The real depth of the trouble can be seen by the computer giving 44.-Rd5(!!) and 44.-Q:c6 as the best suggestions, both of which leave White with a big advantage but Black could fight for a draw. It really is difficult to give a question mark to the next move, although it objectively deserves one.
44.-Q:d1+?
This loses soon, but it is difficult to see why. Most likely Black assumed Khismatullin was going for a draw in style.
45.Kh2 R:c6 46.Qe7+ Kh6 47.Qf8+ Kg5
With a draw, after all, Eljanov might have thought.
 48.Q:f7!!
 Black to move

Black has every advantage in this position - active pieces, a rook up, a dangerous passed pawn - except one: The king's security. And as unfair as it is, no matter how good you have played and how many advantages you collected: if you are checkmated, you lose.
And Black will be checkmated sooner or later. The game lasted for another nine moves, which will be given without further comment.
An incredible position we have in this diagram, great play by Khismatullin!

48.-Rf6 49.f4+ Kh6 50.Q:f6 Qe2 51.Qf8+ Kh5 52.Qg7! h6 53.Qe5+ Kh4 54.Qf6+ Kh5 55.f5! g:f5 56.Q:f5+ Kh4 57.Qg6 and Black gave up.

As a postscriptum it should be added that both did not take a top rank. The tournament was won by Jewgeni Najer, in front of David Navara and Mateusz Bartel. If there was a beauty prize, however, this 44.Kg1 would have deserved it.

Thanks to fellow historian Wolfgang Pieper (Osnabrück) for telling me about the game!

Sunday, August 31, 2014

The Diemer mystery

In my childhood I was easily influenced by fanatic chess players: the U.S. American Bobby Fischer as an idol for his superiority, for beating the east (and later the west), and the German Emil Joseph Diemer who propagated "Vom ersten Zug auf Matt", playing for checkmate from the very beginning.
Let's be honest: What is better than checkmating? It ends the game, often is beautiful, what more do you want?
Well, nowadays I could have many answers to what is better, but back then I didn't know the wonderland of composition much.

Diemer was a controversial figure of chess, in a list of the most controversial chess players he would rank far at the top, a bit behind Fischer. Diemer was much more of a fanatic even than Fischer. He apparently called himself the "Messias des Schachs" at one occasion even. I read his books about his gambit, a radical way of playing - win or lose, with few in-between. Checkmate or gain a lost position with a missing pawn or two. And of course it was the plethora of beautiful combinations as well as the perceivable ease of winning that hooked me up to the Blackmar Diemer gambit. Nowadays I would only play the Blackmar gambit 1.d2-d4 f7-f5 2.e2-e4 d5:e4 3.f2-f3, or 3.Sb1-c3 Sg8-f6 4.f2-f3, but not the more known Blackmar gambit 1.d2-d4 d7-d5 2.e2-e4 d5:e4 3.f2-f3? (3.-e7-e5! and Black is better) or the Blackmar Diemer gambit 1.d2-d4 d7-d5 2.e2-e4 d5:e4 3.Sb1-c3 Sg8-f6 4.f2-f3. The reason is easy and sad: The Blackmar Diemer gambit most probably is incorrect. There is one very much forced variation that Georg Studier showed me and that refutes a critical line of the gambit.

Diemer had - apart from his important although controversial theoretical work - another side to him, he wanted to be a prophet. He used a lot of things that he believed to help but in reality are just scam, such as some mathematical stuff, biorhythms, etc.
There is however one episode that is worth being told: At the very end of Diemer's life, he predicted the assassination of Wolfgang Schäuble. Diemer tried to visit Schäuble, but Schäuble was not at home. The event took place indeed after Diemer had died. I don't know what exactly Diemer said, but Schäuble survived, although since then unable to walk.
 What happened there? Had Diemer - after over half a century of nonsensical pseudoresearch - finally found a connection to the universe that enabled him to make an accurate prediction? Did he have only the lucky hit that inevitably comes at some time for someone? Did he become a prophet, or did he completely descend into madness?
 Unfortunately, we will never know. The greatest chess propagandist of our country took this last secret with him.
One thing is sure, and Studier admitted it: When he wrote the biography of Diemer, he made a crucial mistake: Diemer died on 10 October 1990, but the assassination took place two days later. Diemer saw it indeed in advance...

I want to believe! I want to believe that for him - just as it did for me - the universe answered when he asked, even if it takes a lifetime...

Tuesday, July 29, 2014

Three games where I need the full score

Troitzki - Focht, 1896

FEN: 2kr4/1ppb1pp1/1b4r1/pP2p3/P3P3/5qN1/2Q2P1P/2R1B1KR

1.Rd1!! Bh3? 2.R:d8+ K:d8 3.Qd1+! Q:d1 stalemate
 The game looks fake but I have seen the full game score at some point in my life, unfortunately I have no idea where. It might be in a book of the East Berlin "Sportverlag", possibly translated by Bodo Starck.

Source: Jugendschach 4/1994, "Teste dein Rechenvermögen" column by Bodo Starck

Simagin - Bronstein, Moscow 1947

FEN: 8/6k1/3b1p2/7p/5P2/2P5/PPKQ4/2B4q

1.-h4? 2.Q:d6 Qg2+ 3.Kb3 h3 4.Qd7+ Kg8 5.f5 h2 6.Bg5!! h1Q 7.Qe8+ Kg7 8.Qg6+ Kf8 9.Q:f6+ Kg8 10.Qd8+ Kg7 11.Qe7+ Kg8 12.Qe8+ 1-0
Simagin noted that his opponent could have probably drawn by 1.-Qe4+!. When and where was this game analysed by Simagin?

Source: Jugendschach 10/94, "Teste dein Rechenvermögen", column by Bodo Starck 

Volpert - Zatulovskaya 1960 (?)

FEN: 8/3k1p2/5p1p/2K1p2P/4P1P1/5P2/8/8

41.-Ke7 42.Kd5 Kf8 43.Kc6!! Kg7 44.Kc7 Kh7 45.Kd7 Kh8 46.g5! h:g5 47.Ke7 f5! 48.e:f5 e4? 49.f:e4 g4 50.K:f7! g3 51.f6 g2 52.Ke8 g1Q 53.f7 "and White won"

Black could have drawn with the phantastic 48.-Kg8!!

Source: Shakhmaty v SSSR 2/1961, "Etjudnoe okonchanie". Article by Igor Bondarevsky.


In all cases, the full game score is sought!