Mega Database 2016

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Masters Challenge Biel Round 1

– The Masters Challenge in Biel this year is featuring Maxime Vachier-Lagrave and Peter Svidler. They play a match of rapid and classical games. Today is round one of the classical games. Daniel King is analysing live starting at 5pm CEST. View the whole schedule!


Fritz 15 - English Version

New Fritz, new friend


Complete Nimzo-Indian Powerbook 2016

We have included the whole E00-E59 complex in our “Complete Nimzo-Indian Powerbook 2016”. It is based, e.g., on 45 000 games from the Mega database and 4000 correspondence games. The lion’s share is made up of the 245 000 games from the engine room.


Queen's Gambit Declined Powerbook 2016

For the Queen's Gambit Declined Powerbook we once again used above all high grade material: 90 000 games from Mega and from correspondence chess, but these are of high quality. Added to that are 410 000 games from the engine room on


The Semi-Slav

The Semi-Slav (1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6) can arise via various moveorders, has decided World Championships, and is one of Black’s most fascinating replies to 1 d4. Nielsen explains in detail what this openign is all about.


The Black Lion - an aggressive version of the Philidor Defense

The Lion gets ready to roar after 1.e4 d6 2.d4 Nf6 3.Nc3 e5 4.Nf3 Nbd7 5.Bc4 Be7 6.0–0 c6 – and now Black wants to attack with an early ...g5.


Power Play 23: A Repertoire for black with the Queen's Gambit Declined

On this DVD Grandmaster Daniel King offers you a repertoire for Black with the QGD. The repertoire is demonstrated in 10 stem games, covering all White’s major systems: 5 Bg5, 5 Bf4, and the Exchange Variation.


Power Play 24: A repertoire for black against the Catalan

On this DVD Grandmaster Daniel King offers you a repertoire for Black against the Catalan, based around maintaining the rock of a pawn on d5. Keeping central control ultimately gives Black good chances to launch an attack against the enemy king.


Books, boards, sets: Chess Niggemann

Ken Thompson, Dennis Ritchie win Japan 'Nobel' Prize

1/26/2011 – It is the most prestigious award in Japan, often referred to as the "Asian Nobel Prize". It is given for outstanding achievements in science and technology, and is worth $600,000. This year it goes to two American scientists who forty years ago created the Unix operating system and the computer language C. One of them is also a computer chess pioneer who visited the London Chess Classic.
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Ken Thompson, Dennis Ritchie win Japan Prize

When Ken Thompson and Dennis Ritchie began creating the Unix operating system in 1969, they did not envision that their work would become a backbone of the computer revolution that has transformed the world. The two Bell Labs computer scientists – named today as winners of the 2011 Japan Prize for information and communications – just wanted to build a better operating system. "I did it as a backlash against the bad operating systems of the day," said Thompson, 67. "We were just trying to get something better to get our own work done."

In 1999 Thompson and Ritchie received the National Medal of Technology from President Clinton

Thompson, now living in San Jose and doing work as a "distinguished engineer" for Mountain View's Google Inc., and Ritchie, 69, now a computer consultant, were named by the Japan Prize Foundation to commemorate their work four decades ago at the old Bell Laboratories, now owned by Alcatel-Lucent in New Jersey. Unix, developed in conjunction with the programming language C, "has significantly advanced computer software, hardware and networks over the past four decades and facilitated the realization of the Internet," the foundation said in a news release.

The pair will split a $600,000 prize awarded by the foundation, which began in 1982 to honor those whose work "aims to promote the advancement of science and technology for the peace and prosperity of mankind." Ten Japan Prize winners have also won Nobel Prizes.

The Japan Prize is awarded to people from all parts of the world whose "original and outstanding achievements in science and technology are recognized as having advanced the frontiers of knowledge and served the cause of peace and prosperity for mankind." The Prize is in principle given for work done in any field of science and technology, but each year two particular fields are designated based on trends within these areas and other considerations. Laureates receive a "Japan Prize" certificate of merit, a prize medal, and a cash award of 50 million yen for each field. Only living individuals may be nominated for the prize.

To give you an impression here is last year's Japan Prize ceremony – which is attended by the Japanese Emperor, his wife and the entire Japanese government. The 2011 Prize to Thompson and Ritchie will be awarded in April.

Ken Thompson is famous for Unix and C, but is also considered a computer chess pioneer. In 1979 Ken and a colleague at the Bell Laboratories decided to build a special purpose machine to play chess, using many hundreds of chips, worth about 20,000 dollars.

"Belle" was able to search at about 180,000 positions per second (the super-computers at the time were doing 5,000 positions) and go down eight to nine ply in tournament games, which enabled it to play in the master category. It won the world computer chess championship and all other computer tournaments from 1980 to 1983, until it was superseded by giant Cray X-MPs costing a thousand times more.

Chess computers and endgames: Ken Thompson with Garry Kasparov

Ken is also one of the pioneers of endgame databases. In the 80s he began to generate and store all legal endgame positions with four and five pieces on the board. A typical five-piece ending, like king and two bishops vs king and knight, contains 121 million positions. With a pawn, which is asymmetric in its movements, the number rises to 335 million. Thompson wrote programs that generated all legal positions and worked out every forcing line that is possible in each endgame. He also compressed the resulting data in a way that allowed one to store about 20 endgames on a standard CD-ROM.

Ken at the London Chess Classic

One of the guests of honour at the 2011 London Chess Classic was Ken Thompson, who remains a keen chess enthusiast and is well known to many of the world's top grandmasters. There are many stories to be told about his visit to London in December – at least one involves chess and astronomy – but we will leave that for later. Here are some pictorial impressions.

A conjunction of pure brain power: world class economist and chess grandmaster Ken Rogoff,
GM and author John Nunn, computer and computer chess pioneer Ken Thompson

A post-game coffee shop encounter: Prof Vinayak Dravid of Northwestern University,
Vishy Anand, World Chess Champion and Ken Thompson, a good friend of Anand

Operating remote telescopes with Anand, Luke McShane (right) and astronomer
Christian Sasse, who runs the Global Rent-a-Scope (GRAS) site

A private dinner given by the Chess Classic sponsor Peter Davies for Anand, Davies, Natasha Rogoff,
Ken, tournament organiser Malcolm Pein. The empty chairs belong to Frederic Friedel and Ken Rogoff...

... who went away to get his latest bestseller for Vishy Anand

Ken, a four-pen geek, in conversation with Natasha Lance Rogoff, an independent film maker who graduated from the University of California at Berkeley and received a master's degree in international affairs from Columbia University. Most impressively Natasha is responsible for the production of 182 original Sesame Street episodes in Russian.

Ken with French journalist Marie Laure Germon, who is married to Vladimir Kramnik

A great scientist and a great friend: congratulations Ken

Photos from London by Frederic Friedel

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Topics Ken Thompson

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