Chess Playing Software

HOUDINI 2 AQUARIUM PRO (PC-DVD)

Ref: CAH2P

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Houdini 2 Aquarium Pro is a revolutionary analysis, database and chess publishing tool, combined with the world’s strongest chess playing engine, Houdini 2 Pro, which supports up to 32 cores and 32 GB of hash. You can connect Houdini 2 UCI Pro engine to ChessOK Aquarium, Fritz 12/13, ChessBase 11, etc.
Houdini 2 Aquarium Pro offers advanced analysis functions, game commenting, searching, powerful chess trees, playing against the computer, databases, advanced publishing features and much more.
Houdini 2 Aquarium Pro includes 1 year membership at ChessOK Playing Zone including tournament participation, lecture creation and shared analysis of games.
System requirements: PC, 256 MB RAM, 4GB of free disk space, Windows 7/XP/Vista.
Published 2011. Aquarium user manual
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HOUDINI 2 AQUARIUM PRO (DOWNLOAD VERSION)

Ref: CAH2PD

Price: £55.79 (£66.95 Including VAT at 20%)
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Order the download version of Houdini 2 Aquarium Pro, featuring Houdini 2 Pro engine, and we will email you a link to enable you to download the program to your PC. Shipping for downloaded items is free.
Please note: the link will be sent during our office hours
Full Windows 7 (32 & 64 bit) and Vista compatibility.
System requirements: PC, 256 MB RAM, 4GB of free disk space, Windows 7/XP/Vista.
Published 2011.

HOUDINI 2 AQUARIUM (PC-DVD)

Ref: CAH2

Price: £36.66 (£43.99 Including VAT at 20%)
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Houdini 2 Aquarium is a revolutionary analysis, database and chess publishing tool, combined with the world's strongest chess playing engine, Houdini 2.
Houdini 2: The World's strongest chess program (current CCRL rating is 3347), which supports up to 6 cores and 4 GB of hash. You can connect Houdini 2 UCI engine to ChessOK Aquarium, Fritz 12/13, ChessBase 11, etc.
Houdini 2 Aquarium offers advanced analysis functions, game commenting, searching, powerful chess trees, playing against the computer, databases, advanced publishing features and much more.
Houdini 2 Aquarium includes 1 year membership at ChessOK Playing Zone, including tournament participation, lecture creation and shared analysis of games.
Other features:
* Analyze and annotate your games with Aquarium's advanced analysis methods
* Includes database of 5.1 million games (upto October 1, 2011) which can be updated on-line each week with 2000 new games.
* Powerful and fast chess trees
* Play against the computer
* Publish your chess text: print, word processor or web
* Supports Chessbase/Fritz CBH format (read and convert), Chess Assistant CDP, PGN and EPD databases
* Full Windows 7 (32 & 64 bit) and Vista compatibility.
* Language versions: English, German, Spanish, Italian and French versions are available to install from the DVD.
System requirements: PC, 256 MB RAM, 4GB of free disk space, Windows 7/XP/Vista.
Published 2011. Aquarium user manual
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HOUDINI 2 AQUARIUM (DOWNLOAD VERSION)

Ref: CAH2D

Price: £35.00 (£42.00 Including VAT at 20%)
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Order the download version of Houdini 2 Aquarium, featuring Houdini 2 engine, and we will email you a link to enable you to download the program to your PC. Shipping for downloaded items is free.
Please note: the link will be sent during our office hours
Full Windows 7 (32 & 64 bit) and Vista compatibility.
System requirements: PC, 256 MB RAM, 4GB of free disk space, Windows 7/XP/Vista.
Published 2011.

HOUDINI OPENING BOOK (PC-DVD)

Ref: CAH2B

Price: £17.49 (£20.99 Including VAT at 20%)
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Robert Zibell
Houdini Opening Book provides latest chess theory approved in millions of advanced chess games and matches of top human players. It includes over 65 million positions.
Houdini Opening Book is developed especially for Houdini, but can be used with any other engine in the Aquarium interface, as well as in other interfaces (such as Fritz) via Aquarium Book Adapter included on this DVD.
Houdini Opening Book is a thoroughly researched and up to date collection of modern opening lines. It can be used as an opening book in chess engine matches, an opening guide in correspondence chess, as well as a source for general opening studies and tournament preparation by players at all levels.
The opening book is based on a careful selection of the most important theoretical games, both by human players and chess engines. All variations were carefully reviewed and moves were classified and color coded with green color (recommended moves), red (not recommended), blue (recommended for human tournaments but not computer tournaments) and black (neutral moves). If you want to build a successful opening repertoire, based on active but solid lines, this is the opening book for you!
As a special bonus from ChessOK, the book includes chess trees (positional databases) containing computer evaluations of the moves in the book and statistics showing their popularity in human games and in correspondence play. The trees also show changes to the popularity of moves in the past year.
The book is specially designed to use all the advantages of navigation in multi-column tree view of the Aquarium GUI.
The author of the book is Roger E. Zibell.
System Requirements: Windows 7/XP/Vista, 256 Mb RAM, 4Gb HDD space, Aquarium or other playing interface.
Published 2011.
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HOUDINI OPENING BOOK (DOWNLOAD VERSION)

Ref: CAH2BD

Price: £16.66 (£19.99 Including VAT at 20%)
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Order the download version of Houdini Opening Book and we will email you a link to enable you to download the program to your PC. Shipping for downloaded items is free.
Please note: the link will be sent during our office hours
Full Windows 7 (32 & 64 bit) and Vista compatibility.
System requirements: PC, 256 MB RAM, 4GB of free disk space, Windows 7/XP/Vista.
Published 2011.

FRITZ 13

Ref: CPF13

Price: £33.29 (£39.95 Including VAT at 20%)
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Fritz 13 offers chess players everything they need to play, study and train: professional board graphics, engine management, adjustable playing strength, coach functions, move explanation, automatic game analysis and commentary, training modules for openings, tactics and endgames, professional printing of games and diagrams, a database of 1.5 million games, ten hours of private video instructions by grandmasters. And the icing on the cake: six months of free premium membership to the world’s largest chess server: Playchess.com.
* Play against Fritz
* Store and analyse your own games with Fritz
* Learn from the master games in the database and from video coaching and Fritz' own analysis
* Print games and diagrams
System requirements:
Minimum: Pentium III 1 GHz, 1 GB RAM, Windows Vista, XP (Service Pack 3), DirectX9 graphics card with 256 MB RAM, 100% DirectX10 compatible soundcard , DVD-ROM drive, Windows-Media Player 9 and Internet connection required for Internet-based features (playchess.com, lets check etc.). Program activation via Internet required.
Recommended: PC Intel Core 2 Duo, 2.4 GHz, 3 GB RAM, Windows 7, DirectX10 graphics card (or compatible)with 512 MB RAM or more, 100% DirectX10 compatible soundcard, Windows Media Player 11, DVD ROM drive and Internet connection required for Internet-based features (playchess.com, lets check etc.). Program activation via Internet required.
View user manual (pdf)
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CHESS PLAYING PRO-PACK (PC-DVD)

Ref: CPP1

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Pro-pack price depends on the options selected from the drop down boxes below.
Enjoy great savings when you buy the Chess Playing Pro-Pack which includes either Powerbooks 2011 PC-DVD, Endgame Turbo 3 PC-DVD pack or both, together with your choice of Fritz 13, Rybka 4, Shredder 12, Hiarcs 13 or Junior 12! (all PC-DVD)
Individual retail prices:
Fritz13: £33.29 each + VAT
Rybka 4/Shedder12/Hiarcs13/Junior12: £37.46 each + VAT
Endgame Turbo 3: : £36.62 + VAT
Powerbooks 2011: £36.62 + VAT
System requirements:
Minimum: Pentium III 1 GHz, 1 GB RAM, Windows Vista, XP (Service Pack 3), DirectX9 graphics card with 256 MB RAM, 100% DirectX10 compatible soundcard , DVD-ROM drive, Windows-Media Player 9 and Internet connection required for Internet-based features (playchess.com, lets check etc.). Program activation via Internet required.
Recommended: PC Intel Core 2 Duo, 2.4 GHz, 3 GB RAM, Windows 7, DirectX10 graphics card (or compatible)with 512 MB RAM or more, 100% DirectX10 compatible soundcard, Windows Media Player 11, DVD ROM drive and Internet connection required for Internet-based features (playchess.com, lets check etc.). Program activation via Internet required.

Chess Playing Software Chess Playing Software Required (Choose one) Fritz 13 (£30.00 Excluding VAT) Hiarcs 13 (£30.00 Excluding VAT) Rybka 4 (Fritz interface) (£30.00 Excluding VAT) Rybka 4 (Aquarium interface) (£30.00 Excluding VAT) Shredder 12 (£30.00 Excluding VAT) Junior 12 (£33.00 Excluding VAT)

Add-ons Choose Powerbooks 2011, Endgame Turbo 3 or both Powerbooks 2012 (£33.00 Excluding VAT) Endgame Turbo 3 (£33.00 Excluding VAT) Powerbooks 2012 + Endgame Turbo 3 (£64.12 Excluding VAT)

CHESS PLAYING PRO PACK [MULTIPROCESSOR VERSION] (PC-DVD)

Ref: CPP4

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Pro-pack price depends on the options selected from the drop down boxes below.
Enjoy great savings when you buy the Chess Playing Pro Pack Multiprocessor Version which includes either Powerbooks 2011 PC-DVD, Endgame Turbo 3 PC-DVD pack or both, together with your choice of Deep Fritz 12, Deep Rybka 4, Deep Shredder 12, Deep Hiarcs 13 or Deep Junior 12 (all PC-DVD).
Individual recommended retail prices:
Deep-Fritz12/Rybka4/Shedder12/Hiarcs13/Junior12: £74.96 each + VAT
Endgame Turbo 3/Powerbooks 2011 : £36.62 each + VAT
System requirements:
Minimum : Pentium III 1 GHz, 512 MB RAM, Windows Vista, XP (Service Pack 3), DirectX9 graphics card with 256 MB RAM, DVD-ROM drive, Windows-Media Player 9, internet access (playchess.com, updates and activation)
Recommended: PC Intel Core 2 Duo, 2.4 GHz, 3 GB RAM, Windows Vista or Windows 7, DirectX10 graphics card (or compatible) with 512 MB RAM or more, 100% DirectX10 compatible sound card, Windows Media Player 11, DVD ROM drive and internet access (playchess.com, updates and activation).

Chess Playing Software Chess Playing Software Required (Choose one) Deep Fritz 12 (£64.00 Excluding VAT) Deep Hiarcs 13 (£64.00 Excluding VAT) Deep Rybka 4 (Fritz interface) (£64.00 Excluding VAT) Deep Rybka 4 (Aquarium interface) (£64.00 Excluding VAT) Deep Shredder 12 (£64.00 Excluding VAT) Deep Junior 12 (£64.00 Excluding VAT)

Add-ons Choose Powerbooks 2011, Endgame Turbo 3 or both Powerbooks 2012 (£33.00 Excluding VAT) Endgame Turbo 3 (£33.00 Excluding VAT) Powerbooks 2012 + Endgame Turbo 3 (£64.12 Excluding VAT)

HIARCS 13 (PC-DVD)

Ref: CPH13

Price: £37.46 (£44.95 Including VAT at 20%)
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By Mark Uniacke
THIS IS WHAT HIARCS 13 OFFERS:
- Single core chess engines Hiarcs 13.2 and 13.1 by Mark Uniacke
- Hiarcs13Lite opening book by Mark Uniacke and the Team HIARCS
- Fritz 12 user interface witth many training functions
- Photo realistic 3D boards iin five different designs
- 12 months access to the world's biggest chess server Playchess.com
- Topical database with 1,500,000 games.com
System requirements: Minimum: Pentium III 1 GHz, 1.5 GB RAM, Windows Vista, XP (Service Pack 3), Windows 7, DirectX9 graphics card with 256 MB RAM, DVD-ROM drive, Windows-Media Player 9, internet access (playchess.com, updates and activation).
Recommended: PC Intel Core 2 Duo, 2.4 GHz, 3 GB RAM, Windows 7, DirectX10 graphics card (or compatible) with 512 MB RAM or more, 100% DirectX10 compatible sound card, Windows Media Player 11, DVD ROM drive and internet access (playchess.com, updates and activation). Published 2011
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DEEP HIARCS 13 (PC-DVD)

Ref: CPH13D

Price: £74.96 (£89.95 Including VAT at 20%)
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By Mark Uniacke
THIS IS WHAT DEEP HIARCS 13 OFFERS:
- Multiprocessor/core chess eengines Deep Hiarcs 13.2 & 13.1 by Mark Uniacke
- Hiarcs13Lite opening book by Mark Uniacke and Team HIARCS
- Fritz 12 user interface witth many training functions
- Photo realistic 3D boards iin five different designs
- 12 months access to the world's biggest chess server Playchess.com
- Topical database with 1,500,000 games

System requirements: Minimum: Pentium III 1 GHz, 1.5 GB RAM, Windows Vista, XP (Service Pack 3), Windows 7, DirectX9 graphics card with 256 MB RAM, DVD-ROM drive, Windows-Media Player 9, internet access (playchess.com, updates and activation).
Recommended: PC Intel Core 2 Duo, 2.4 GHz, 3 GB RAM, Windows 7, DirectX10 graphics card (or compatible) with 512 MB RAM or more, 100% DirectX10 compatible sound card, Windows Media Player 11, DVD ROM drive and internet access (playchess.com, updates and activation). Published 2011
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HIARCS 13 PROFESSIONAL OPENINGS BOOK (PC CD)

Ref: CPH13B

Price: £20.79 (£24.95 Including VAT at 20%)
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The Hiarcs 13 Pro book is a very strong and varied opening book derived from top correspondence and over the board human games together with the best computer games giving a superb combination with the latest cutting edge chess theory and a wealth of novelties to provide a huge repertoire of finely tuned variations. In addition to this strong basis the book has many novelties and variations that have been analysed by HIARCS to eliminate mistakes and improve the quality of book. The book is right up to date as of mid December 2010 including even games from the London Chess Classic and Moscow tournaments.
With 2,925,276 positions, 382,899 variations and statistics from 678,641 high quality games the Hiarcs13 Pro book is a great resource for the active player who wants to be right up to date.
System Requirements: Pentium 1 Ghz, 512 RAM, Windows 7, Vista or Windows XP (SP2), CD ROM Drive, Deep Hiarcs 13, Hiarcs 13, Fritz 12, Rybka 4, Junior 12, Shredder 12. Published 2011
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RYBKA 4 (PC-DVD) with Fritz 12 Interface

Ref: CBRB4

OUR PRICE: £37.46 (£44.95 Including VAT at 20%)
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Vasik Rajlich
For years Rybka has been the uncontested number one in computer chess and since its great breakthrough in 2006 the program has won with remarkable regularity one world title after the other. So that this state of affairs will continue in the future, the Rybka-team gathered around programmer Vasik Rajlich has developed a new version which is even better: Rybka 4 plays morre aggressively and more tactically. During the last two years the engine has been improved in almost all areas. One major theme has been the understanding of the attack on the king. The new Rybka 4 is in this case more precise and reliable than its predecessor. At the same time the search function now operates more quickly and efficiently and the evaluation function delivers even more spot-on judgments. As for the playing style, Rybka 4 logically continues the development of the past few years.
Thanks to further development in the tactical area too, the new Rybka 4 will be indispensable for all those who work and analyse with chess engines. Rybka 4 is delivered with the new user-friendly Fritz 12 interface and contains a database of 1.5 million games and includes CLASSIC membership for playchess. com for one year.
System requirements:
Minimum: Pentium III 1 GHz, 512 MB RAM, Windows Vista, XP (Service Pack 3), DirectX9 graphics card with 256 MB RAM, DVD-ROM drive, Windows-Media Player 9, internet access (playchess.com, updates and activation).
Recommended: PC Intel Core 2 Quad, 2.4 GHz, 3 GB RAM, Windows Vista or Windows 7, DirectX10 graphics card (or compatible) with 512 MB RAM or more, 100% DirectX10 compatible, sound card, Windows Media Player 11, DVD ROM drive and internet access (playchess.com, updates and activation). The activation of the program requires internet access.
Published June 2010.
Free update to Rybka 4.1 engine

DEEP RYBKA 4 (PC-DVD) - Multiprocessor Version with Fritz 12 Interface

Ref: CBDR4

OUR PRICE: £74.96 (£89.95 Including VAT at 20%)
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Vasik Rajlich
For years Rybka has been the uncontested number one in computer chess and since its great breakthrough in 2006 the program has won with remarkable regularity one world title after the other. So that this state of affairs will continue in the future, the Rybka-team gathered around programmer Vasik Rajlich has developed a new version which is even better: Rybka 4 plays more aggressively and more tactically. During the last two years the engine has been improved in almost all areas. One major theme has been the understanding of the attack on the king. The new Deep Rybka 4 is in this case more precise and reliable than its predecessor. At the same time the search function now operates more quickly and efficiently and the evaluation function delivers even more spot-on judgments. As for the playing style, Deep Rybka 4 logically continues the development of the past few years. Thanks to further development in the tactical area too, the new Deep Rybka 4 will be indispensable for all those who work and analyse with chess engines. The new multiprocessor version Deep Rybka 4 calculates much faster than the single-core version: when you double the number of processors, Rybka's speed increases by a factor of 1.7! Deep Rybka 4 is delivered with the new user-friendly Fritz 12 interface and contains a database of 1.5 million games and includes CLASSIC membership for playchess.com for one year.
System requirements:
Minimum: Pentium III 1 GHz, 512 MB RAM, Windows Vista, XP (Service Pack 3), DirectX9 graphics card with 256 MB RAM, DVD-ROM drive, Windows-Media Player 9, internet access (playchess. com, updates and activation).
Recommended: PC Intel Core 2 Quad, 2.4 GHz, 3 GB RAM, Windows Vista or Windows 7, DirectX10 graphics card (or compatible) with 512 MB RAM or more, 100% DirectX10 compatible, sound card, Windows Media Player 11, DVD ROM drive and internet access (playchess.com, updates and activation). The activation of the program requires internet access.
Published 2010.
Free update to Rybka 4.1 engine

RYBKA 4 OPENING BOOK (PC-DVD) (Fritz version)

Ref: CBRBB4

Price: £18.67 (£22.40 Including VAT at 20%)
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The Rybka 4 Opening Book by Jiri Dufek
The Rybka 4 opening book is a high-class compilation of opening theory. It was developed for the world's strongest chess entity - 100 cores cluster Rybka and program Rybka 4 and will maximize the program's playing strength. The choice of variations in the book is well suited to the style of the program, and the book has been fine-tuned and checked in thousands of games. The Rybka Book includes 17 million positions and over 700.000 games, which were selected from following sources: Top human practice, correspondence chess games and computer chess games (up to April 2010). And this is only the starting point: the value of the book lies in over 700 original analysis and move choices, which lead to a re-evaluation in many critical points of modern theory. This makes it useful for tournament and correspondence players alike. The book contains a lot of computer-checked analysis never published anywhere before. The author of the Rybka 4 book is Jiri Dufek (national master, FIDE 2276, ICCF IM 2579), one of the world‘s leading experts in chess opening theory. Jiri Dufek has been on the Rybka team since summer 2009, and his preparation is used in all official events after this date, which Rykba won. During World Championship match between Vishy Anand and Veselin Topalov he worked as a second of Veselin Topalov. In his long chess career he twice won the Czech Correspondence Team Chess Championship and wrote, together with Roman Chytilek, the book Beating the French Defence (in Czech only).
System requirements: Pentium 1 GHz, 512 MB RAM, Windows7, Vista or Windows XP (Service Pack 2), CD ROM drive, WindowsMedia Player 9, Rybka 4, Deep Rybka 4, Fritz 12, Shredder 12 or Hiarcs 12.
Published 2010.

RYBKA AQUARIUM 2011

Ref: CARB11

Price: £36.66 (£43.99 Including VAT at 20%)
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Vasik Rajlich
Rybka Aquarium 2011 offers advanced analysis functions, game commenting, searching, powerful chess trees, playing, databases and much more.
Short description:
Rybka 4.1 engine - World Computer Chess champion and rating lists leader. Rybka 4.1 can be also used in Fritz and other chess programs
Analyze and annotate your games with Aquarium's advanced analysis methods
Databases with fast searches
Powerful and fast chess trees
Play against the computer
Publish your chess text: Print, word processor or web
Database: 4,700,000 games (up to April 1, 2011).
Supports Chessbase/Fritz CBH format (read and convert), Chess Assistant CDP, PGN and EPD databases
One year free membership in ChessOK Playing Zone.
Full Windows 7 (32 & 64 bit) and Vista compatibility.
What's new in Rybka Aquarium 2011 compared to Rybka Aquarium 4:
Updated Rybka 4.1 engine
Up to date (April 2011) databases, trees and CAP evaluations.
IDeA is much faster and more intellectual.
Infinite analysis and IDeA are integrated to work together in the games.
Result of infinite analysis of different engines can be stored in different trees.
ChessOK Playing Zone client for playing chess by network is integrated into installation package. One year free membership is provided to Aquarium 2011 owners.
Language versions: English, German, Spanish, Italian and French versions are available.
System requirements: PC, 256 MB RAM, 4GB of free disk space, Windows 7/XP/Vista
Published 2011.
User manual
Features ..

RYBKA AQUARIUM 2011 (DOWNLOAD VERSION)

Ref: CARB11D

Price: £34.58 (£41.50 Including VAT at 20%)
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Order the download version of Rybka Aquarium 2011, featuring Rybka 4.1 engine, and we will email you a link to enable you to download the program to your PC.
Please note: the link will be sent during our office hours
Vasik Rajlich
Full Windows 7 (32 & 64 bit) and Vista compatibility.
System requirements: PC, 256 MB RAM, 4GB of free disk space, Windows 7/2000/XP/Vista.
Published 2011.

DEEP RYBKA AQUARIUM 2011 (PC-DVD)

Ref: CADR11

Price: £73.29 (£87.95 Including VAT at 20%)
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Vasik Rajlich
Deep Rybka Aquarium 2011 offers advanced analysis functions, game commenting, searching, powerful chess trees, playing, databases and much more.
With Deep Rybka Aquarium 2011 you will also get a bonus of Openings Encylopedia 2011, which includes rich theoretical material on all the openings, more than 8000 annotations from GM Kalinin and 500 000 expert evaluations expert evaluations to key opening positions, which were verified and corrected by Rybka and 40 million of evaluations by Rybka engine. There's a powerful search system as well.

Short description:
•Deep Rybka 4.1 engine - World Computer Chess champion and rating lists leader. Deep Rybka 4.1 can be also used in Fritz and other chess programs
•Analyze and annotate your games with Aquarium's advanced analysis methods
•Databases with fast searches
•Powerful and fast chess trees
•Play against the computer
•Publish your chess text: Print, word processor or web
•Database: 4,700,000 games (up to April 1, 2011).
•Supports Chessbase/Fritz CBH format (read and convert), Chess Assistant CDP, PGN and EPD databases
•One year free membership in ChessOK Playing Zone. In order to activate your membership, please mail us at chessokcom@gmail.com with your serial number and login, once you've registered on ChessOK Playing Zone.
•Full Windows 7 (32 & 64 bit) and Vista compatibility.

What's new in Deep Rybka Aquarium 2011 compared to Deep Rybka Aquarium 4:
•Updated Deep Rybka 4.1 engine
•Up to date (April 2011) databases, trees and CAP evaluations.
•IDeA is much faster and more intellectual.
•Infinite analysis and IDeA are integrated to work together in the games.
•Result of infinite analysis of different engines can be stored in different trees.
•ChessOK Playing Zone client for playing chess by network is integrated into installation package. One year free membership is provided to Aquarium 2011 owners.
Language versions: English, German, Spanish, Italian and French versions are available.
System requirements: PC, 256 MB RAM, 4GB of free disk space, Windows 7/XP/Vista.
Published 2011.
User manual

DEEP RYBKA AQUARIUM 2011 (DOWNLOAD VERSION)

Ref: CADR11D

Price: £69.16 (£82.99 Including VAT at 20%)
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Order the download version of Deep Rybka Aquarium 2011, featuring Deep Rybka 4.1 engine, and we will email you a link to enable you to download the program to your PC.
Please note: the link will be sent during our office hours
Vasik Rajlich
Full Windows 7 (32 & 64 bit) and Vista compatibility.
System requirements: PC, 256 MB RAM, 4GB of free disk space, Windows 7/2000/XP/Vista.
Published 2011.
Features ...

RYBKA 4 AQUARIUM OPENING BOOK (PC-DVD)

Ref: CARBB4

Price: £17.83 (£21.40 Including VAT at 20%)
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Jiri Dufek
Rybka 4 Aquarium Opening Book provides latest chess theory approved on millions of advanced chess games and matches of top human players. It includes over 18,000,000 positions.
Rybka 4 Aquarium Opening Book is a thoroughly researched and up to date collection of modern opening lines. It can be used as an opening book in chess engine matches, an opening guide in correspondence chess, as well as a source for general opening studies and tournament preparation by players at all levels.
The author of the book, Jiri Dufek, is one of Veselin Topalov's seconds in his world championship match against Viswanathan Anand (Sofia 2010). He is one of the top freestyle players in the world, and an International Master of correspondence chess.
The opening book is based on a careful selection of the most important theoretical games, both by human players and chess engines. All variations were carefully reviewed and moves were classified and color coded with green color (recommended moves), red (not recommended), blue (recommended for human tournaments but not computer tournaments) and black (neutral moves). If you want to build a successful opening repertoire, based on active but solid lines, this is the opening book for you!
As a special bonus the book includes chess trees (positional databases) containing computer evaluations of the moves in the book and statistics showing their popularity in human games and in correspondence play. The trees also show changes to the popularity of moves in the past year.
The book is specially designed to use all the advantages of navigation in multi-column tree view of Rybka Aquarium GUI.
System requirements: Rybka 4 Aquarium or Deep Rybka 4 Aquarium installed on PC.

RYBKA 4 AQUARIUM OPENING BOOK (DOWNLOAD VERSION)

Ref: CARBB4D

Price: £15.42 (£18.50 Including VAT at 20%)
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Order the download version of Rybka 4 Aquarium Opening Book and we will email you a link to enable you to download the program to your PC.
Please note: the link can only be sent during our office hours
The book is specially designed to use all the advantages of navigation in multi-column tree view of Rybka Aquarium GUI.
System requirements: Rybka 4 Aquarium or Deep Rybka 4 Aquarium installed on PC.

RYBKA 4 UCI ENGINE ONLY (PC-CD)

Ref: CARU4

Price: £30.79 (£36.95 Including VAT at 20%)
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Rybka 4 UCI is the world champion of chess engines with a rating of 3250+ points ELO. The main developer of the program - international master Vasik Rajlich has inserted the algorithms of positional estimation into it which are as close to the chess-player's style of thinking as possible.
Rybka is a UCI chess engine, which means that you can use it with almost any modern chess user interface such as Aquarium, Chess Assistant, Shredder, Fritz, Chessbase etc.
Rybka 4 UCI includes versions for 32 Bit and 64 Bit processors. Rybka 4 UCI uses one processor/core regardless of how many cores the hardware may have. If you want to take full advantage of multicore processor, buy Deep Rybka 4 UCI.
System requirements: PC, 256 MB RAM, 4GB of free disk space, Windows 7/XP/Vista. CD ROM drive. Rybka 4 UCI is not a standalone program and works only in other popular interfaces e.g. Aquarium, Fritz 12, ChessBase 9+, Shredder 12, Junior 12, Hiarcs 13, Chess Assistant 11.
Published 2011.
Free update to Rybka 4.1 engine

RYBKA 4 UCI ENGINE (DOWNLOAD VERSION)

Ref: CARU4D

Price: £26.66 (£31.99 Including VAT at 20%)
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Rybka 4 UCI is the world champion of chess engines with a rating of 3250+ points ELO. The main developer of the program - international master Vasik Rajlich has inserted the algorithms of positional estimation into it which are as close to the chess-player's style of thinking as possible.
Rybka is a UCI chess engine, which means that you can use it with almost any modern chess user interface such as Aquarium, Chess Assistant, Shredder, Fritz, Arena, Chessbase, ChessPartner, etc.
Rybka 4 UCI uses one processor/core regardless of how many cores the hardware may have. With that limitation it also runs on all processors under the Windows operating system. If you want to take full advantage of multicore processor, buy Deep Rybka 4 UCI.
Order the download version of Rybka 4 UCI Engine and we will email you a link to enable you to download the program to your PC.
Please note: the link can only be sent during our office hours
Features
Leads all independent computer chess rating lists
Rybka 4 UCI includes versions for 32 Bit and 64 Bit processors
Rybka is a UCI chess engine, which means that you can use it with almost any modern chess user interface such as Aquarium, Chess Assistant, Fritz, Arena, etc.
System requirements: PC, 256 MB RAM, 4GB of free disk space, Windows 7/XP/Vista. Rybka 4 UCI is not a standalone program and works only in other popular interfaces e.g. Aquarium, Fritz 12, ChessBase 9+, Shredder 12, Junior 12, Hiarcs 13, Chess Assistant 11.
This product is for download only.

DEEP RYBKA 4 UCI ENGINE ONLY (PC-CD)

Ref: CADU4

Price: £51.66 (£61.99 Including VAT at 20%)
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Deep Rybka 4 UCI is the world champion of chess engines with a rating of 3250+ points ELO. The main developer of the program - international master Vasik Rajlich has inserted the algorithms of positional estimation into it which are as close to the chess-player's style of thinking as possible.
Rybka is a UCI chess engine, which means that you can use it with almost any modern chess user interface such as Aquarium, Chess Assistant, Shredder, Fritz, Arena, Chessbase, ChessPartner, etc.
If you already have or plan to get a multi-core/multi-processor system this is the version that allows you to take full advantage of the hardware, resulting in much faster processing speed and stronger play. If you only need a single core version, buy Rybka 4 UCI. Deep Rybka 4 UCI includes versions for 32 Bit and 64 Bit processors.

This product is on CD. For download version look there.

System requirements: PC, 256 MB RAM, 4GB of free disk space, Windows 7/XP/Vista. CD-ROM drive. Deep Rybka 4 UCI is not a standalone program and works only in other popular interfaces e.g. Aquarium, Fritz 12, ChessBase 9+, Shredder 12, Junior 12, Hiarcs 13, Chess Assistant 11.
Published 2011.
Free update to Rybka 4.1 engine

DEEP RYBKA 4 UCI ENGINE (DOWNLOAD VERSION)

Ref: CADU4D

Price: £47.49 (£56.99 Including VAT at 20%)
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Deep Rybka 4 UCI is the world champion of chess engines with a rating of 3250+ points ELO. The main developer of the program - international master Vasik Rajlich has inserted the algorithms of positional estimation into it which are as close to the chess-player's style of thinking as possible.
Rybka is a UCI chess engine, which means that you can use it with almost any modern chess user interface such as Aquarium, Chess Assistant, Shredder, Fritz, Arena, Chessbase, ChessPartner, etc.
This version runs on all processors under the Windows operating system, but if you already have or plan to get a multi-core/multi-processor system this is the version that allows you to take full advantage of the hardware, resulting in much faster processing speed and stronger play. If you only need a single core version, buy Rybka 4 UCI.
System requirements: PC, 256 MB RAM, 4GB of free disk space, Windows 7/XP/Vista.
Order the download version of Rybka 4 UCI Engine and we will email you a link to enable you to download the program to your PC.
Please note: the link can only be sent during our office hours
Features
Leads all independent computer chess rating listsDeep Rybka 4 UCI includes versions for 32 Bit and 64 Bit processors
Rybka is a UCI chess engine, which means that you can use it with almost any modern chess user interface such as Aquarium, Chess Assistant, Fritz, Arena, etc.
Compatibility
Deep Rybka 4 UCI is not a standalone program and works only in other popular interfaces e.g. Aquarium, Fritz 12, ChessBase 9+, Shredder 12, Junior 12, Hiarcs 13, Chess Assistant 11. This product is for download.

DEEP FRITZ 12 (PC-DVD)

Ref: CPF12D

Price: £74.96 (£89.95 Including VAT at 20%)
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DEEP FRITZ 12: MULTIPROCESSOR VERSION
Deep Fritz 12 is the multiprocessor version of Fritz 12, the world's most popular chess program. Whether you are a beginner, club player or professional DEEP FRITZ has everything that chess players could want: automatically adjusting playing strength, handicap and coaching functions, explanation of positions, coloured danger warnings, openings statistics, automatic game analysis, trainings modules for openings, tactics, endgames, and a database of one million games.
FRITZ continues to fascinate the chess world. It has beaten a reigning World Champion in the battle of man vs machine, and it has worked with World Champions as a clever training partner (Garry Kasparov: "I regularly analyse with FRITZ") which will entertain you with fresh and humorous verbal comments.
NEW: DEEP FRITZ is now even faster. The completely redesigned ergonomic interface gives you instant access to all the most important functions. This means more comfort and clearer controls. Never before has it been so easy and fast to play with DEEP FRITZ.

DEEP FRITZ prepares you for serious encounters over the chessboard. Have you ever trained with a human grandmaster? DEEP FRITZ provides you with twelve hours of video lessons for every level of play. Enjoy the instructive analysis of master games, the discussion of clever openings traps, deadly combinations to solve. The video material introduces you to world class grandmasters like Alexei Shirov, Rustam Kasimdzhanov, Vladimir Kramnik, Vishy Anand, even chess legend Garry Kasparov. And if you cannot play chess DEEP FRITZ will teach you the rules of the games – within an hour you will be playing your first game of chess.

DEEP FRITZ helps you to find friends. It includes a full year's subscription to Playchess.com, the world’s biggest chess server. Every day you have thousands of players logged into this virtual chess club. You will always find an opponent that matches your playing strength. Or you can simply watch top tournaments and the games of world-class grandmasters played live on the server.

NEW: DEEP FRITZ gives you Premium Membership to Playchess. Without further costs or obligations you will be able to listen to the audio commentary during major events, you can receive live training, play in simultaneous exhibitions against top GMs, watch the TV ChessBase shows and play in league tournaments.

DEEP FRITZ 12: NEW FEATURES:
Completely redesigned ergonomic interface
Twelve months premium membership on Playchess.com
New DEEP FRITZ engine: even stronger!
New openings book by Alex Kure
Twelve hours chess tutorial videos with international trainers and world class players
Updated database of 1.5 million games from 1625 to 2009
System requirements: Minimum: Pentium III 1 GHz, 512 MB RAM, Windows Vista, XP (Service Pack 3), DirectX9 graphics card with 256 MB RAM, DVD-ROM drive, Windows-Media Player 9, internet access (playchess.com, updates and activation).
Recommended: PC Intel Core 2 Quad, 2.4 GHz, 3 GB RAM, Windows Vista or Windows 7, DirectX10 graphics card (or compatible) with 512 MB RAM or more, 100% DirectX10 compatible, sound card, Windows Media Player 11, DVD ROM drive and internet access (playchess.com, updates and activation). The activation of the program requires internet access.
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SHREDDER 12 (PC-DVD)

Ref: CPS12

Price: £37.46 (£44.95 Including VAT at 20%)
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Shredder 12 is the work of the most successful German chess programmer of all time: Stefan Meyer Kahlen. No other chess program has won so many world championship titles and the new edition of Shredder is stronger than all previous versions.
Says Meyer Kahlen: "improvements are visible all over the place. Especially the search and the evaluation have become much more precise. The engine is 100 Elo points stronger than the predecessor Shredder 11."
Shredder's world championship titles:
Jakarta 1996: Micro computer world champion • Paderborn 1999: Unlimited world champion • London 2000: Micro computer world champion • Maastricht 2001: Micro computer world champion • Maastricht 2002: Blitz computer world champion • Graz 2003: Unlimited world champion and Blitz computer world champion • Tel Aviv 2004: Blitz computer world champion • Reykjavík 2005: Blitz computer world champion • Mainz 2006 Chess960 computer world champion • Amsterdam 2007: Blitz computer world champion.
WHAT YOU GET:
• The new shredder 12 engine
• Extensive and improved Shredder 12 openings book
• New Fritz 12 user interface
· Photo realistic 3D boards in five different designs
• Topical database with 1.5 million games
• 12 months basic access to the world’s biggest chess server Playchess.com
System requirements: Minimum: Pentium III 1 GHz, 1.5 GB RAM, Windows Vista, XP (Service Pack 3), Windows 7, DirectX9 graphics card with 256 MB RAM, DVD-ROM drive, Windows-Media Player 9, internet access (playchess.com, updates and activation). Recommended: PC Intel Core 2 Duo, 2.4 GHz, 3 GB RAM, Windows 7, DirectX10 graphics card (or compatible) with 512 MB RAM or more, 100% DirectX10 compatible sound card, Windows Media Player 11, DVD ROM drive and internet access (playchess.com, updates and activation)

DEEP SHREDDER 12 (PC-DVD)

Ref: CPS12D

Price: £74.96 (£89.95 Including VAT at 20%)
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Deep Shredder 12 is the work of the most successful German chess programmer of all time: Stefan Meyer Kahlen. No other chess program has won so many world championship titles and the new edition of Shredder is stronger than all previous versions.
Says Meyer Kahlen: "improvements are visible all over the place. Especially the search and the evaluation have become much more precise. The engine is 100 Elo points stronger than the predecessor Deep Shredder 11."
Deep Shredder 12 is the multi-processor version of Shredder 12.
Shredder's world championship titles:
Jakarta 1996: Micro computer world champion • Paderborn 1999: Unlimited world champion • London 2000: Micro computer world champion • Maastricht 2001: Micro computer world champion • Maastricht 2002: Blitz computer world champion • Graz 2003: Unlimited world champion and Blitz computer world champion • Tel Aviv 2004: Blitz computer world champion • Reykjavík 2005: Blitz computer world champion • Mainz 2006 Chess960 computer world champion • Amsterdam 2007: Blitz computer world champion.
WHAT YOU GET:
• The new shredder 12 engine
• Extensive and improved Shredder 12 openings book
• New Fritz 12 user interface
· Photo realistic 3D boards in five different designs
• Topical database with 1.5 million games
• 12 months basic access to the world’s biggest chess server Playchess.com
System requirements: Minimum: Pentium III 1 GHz, 1.5 GB RAM, Windows Vista, XP (Service Pack 3), Windows 7, DirectX9 graphics card with 256 MB RAM, DVD-ROM drive, Windows-Media Player 9, internet access (playchess.com, updates and activation). Recommended: PC Intel Core 2 Duo, 2.4 GHz, 3 GB RAM, Windows 7, DirectX10 graphics card (or compatible) with 512 MB RAM or more, 100% DirectX10 compatible sound card, Windows Media Player 11, DVD ROM drive and internet access (playchess.com, updates and activation)

JUNIOR 12 (PC-DVD)

Ref: CPJ12

Price: £37.46 (£44.95 Including VAT at 20%)
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JUNIOR 12
The name is perhaps deceptive. Playing against Junior is not something for children, as Garry Kasparov discovered in a match in New York. He was held to a 3-3 draw by the Israeli program. Junior played in its typically dynamic style, greatly surprising the former World Champion with now-famous bishop sacrifice on h2 that forced him to concede a draw. Junior has its own special search techniques and evaluation functions, which makes it different to any other chess program. It is enterprising and entertaining, sacrificing material for initiative whenever it sees a chance, providing new ideas in traditional positions against man or machine. Written by Amir Ban and Shay Bushinsky, Junior has won multiple World Computer Chess Championships, and now, in version 12, its playing strength has been further increased by around 200 Elo points, compared to the previous version 10 published by ChessBase. You can look forward to a world class grandmaster when you install the new program on your computer.
WHAT YOU GET WITH JUNIOR 12:
Junior 12 chess engine (32 bit)
The latest openings book by GM Alon Greenfeld
The Fritz 12 GUI
Photo realistic chessboards in five different designs
Database of 1.5 million chess games
Twelve months free access ((Classic) to the world’s biggest chess server
System requirements: Minimum: Pentium III 1 GHz, 1.5 GB RAM, Windows Vista, XP (Service Pack 3), Windows 7, DirectX9 graphics card with 256 MB RAM, DVD-ROM drive, Windows-Media Player 9, internet access (playchess.com, updates and activation). Recommended: PC Intel Core 2 Duo, 2.4 GHz, 3 GB RAM, Windows 7, DirectX10 graphics card (or compatible) with 512 MB RAM or more, 100% DirectX10 compatible sound card, Windows Media Player 11, DVD ROM drive and internet access (playchess.com, updates and activation)
Published 2010.

DEEP JUNIOR 12 (PC-DVD)

Ref: CPJ12D

Price: £74.96 (£89.95 Including VAT at 20%)
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DEEP JUNIOR 12
The name is perhaps deceptive. Playing against Junior is not necessarily something for children, as Garry Kasparov discovered in a match in New York. He was held to a 3-3 draw by the Israeli program. Junior played in its typically dynamic style, greatly surprising the former World Champion with now-famous bishop sacrifice on h2 that forced him to concede a draw. Junior has its own special search techniques and evaluation functions, which makes it different to any other chess program. It is enterprising and entertaining, sacrificing material for initiative whenever it sees a chance, providing new ideas in traditional positions against man or machine. Written by Amir Ban and Shay Bushinsky, Junior has won multiple World Computer Chess Championships, and now, in version 12, its playing strength has been further increased ? by around 200 Elo points, compared to the previouss version 10 published by ChessBase. You can look forward to a world class grandmaster when you install the new program on your computer.
WHAT YOU GET WITH DEEP JUNIOR 12:
Two Deep Junior 12 chess enngines, (32 and 64 bit, up to 40 cores)
The latest openings book byy GM Alon Greenfeld
The Fritz 12 GUI
Photo realistic chessboardss in five different designs
Database of 1.5 million chess games
Twelve months free access ((Classic) to the world's biggest chess server
System requirements: Minimum: Pentium III 1 GHz, 1.5 GB RAM, Windows Vista, XP (Service Pack 3), Windows 7, DirectX9 graphics card with 256 MB RAM, DVD-ROM drive, Windows-Media Player 9, internet access (playchess.com, updates and activation). Recommended: PC Intel Core 2 Duo, 2.4 GHz, 3 GB RAM, Windows 7, DirectX10 graphics card (or compatible) with 512 MB RAM or more, 100% DirectX10 compatible sound card, Windows Media Player 11, DVD ROM drive and internet access (playchess.com, updates and activation)
Published 2010.

FRITZ POWERBOOK 2012 (PC-DVD)

Ref: CPFPB12

Price: £37.46 (£44.95 Including VAT at 20%)
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The Fritz Powerbook 2012 contains 27 millions opening positions, derived from 1.5 million high class tournament games. Together with each position all relevant information is stored: all moves that were played in the position, by players of what average rating, with what success and performance results. The games from which the Fritz Powerbook 2012 were derived are also included on the DVD. This means that in any position of the openings tree you can load and replay the games in which the position occurred. The Fritz Powerbook 2012 represents the state of the art of current openings theory. Discover exciting and tricky new lines and practice them against Fritz. In addition the DVD has a small but very exclusive book with the strongest GM games (ELO >= 2550) from the past 100 years (2 million positions).
System requirements: Windows Vista/XP/7 and Fritz12/13, DVD drive.
Published December 2011.

UPGRADE FROM FRITZ POWERBOOK 2011 to 2012 (PC-DVD)

Ref: CPFPBU

Price: £21.66 (£25.99 Including VAT at 20%)
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Upgrade from 2011 only!
To upgrade to Powerbooks 2012 from Powerbook 2011 please order this product and return your Powerbook 2011 DVD and case to us. We will despatch Powerbooks 2012 DVD as soon as we receive your returned DVD.

(Please obtain proof of posting when sending. Insurance in transit for the returned DVD is your responsibility.)
Return address: Chess Direct Ltd. P.O. Box 18, Mexborough, South Yorkshire S64 9AR U.K.

System requirements: Windows Vista/XP/7 and Fritz12/13, DVD drive.
Published December 2011.

FRITZ ENDGAME TURBO 3 (PC-DVD)

Ref: CPFET3

Price: £36.62 (£43.94 Including VAT at 20%)
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The DVD Endgame Turbo consists of 9 DVDs with endgame databases (Nalimov Tablebases). With the help of the Endgame Turbo, all five and 12 six-piece endgames (including the sophisticated and practice-oriented endgame R, P, P - R) are played with absolute perfection. Likewise, Fritz handles endgames with more than six pieces much better since the program can already access the endgame knowledge during the analysis. Definitely a must-have for correspondence players, endgame theoreticians and friends of engine matches.
System requirements: Pentium II, Win 2000/XP/Vista, 64 MB RAM, 300 MHz, DVD drive, Fritz8/9/10/11/12 or ChessBase 8/9/10, 20 GB free hard disk space (minimum), 43 GB free hard disk space (recommended)

FRITZ TRAINER - MIDDLEGAME STRATEGY & TACTICS (PC-CD)

Ref: CPFM1

Price: £18.67 (£22.40 Including VAT at 20%)
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Peter Wells
This CD by Peter Wells is aimed at advanced players. It contains an introduction and five lectures which deal with purely practical subjects: the calculation of variations and how errors arise. These are important themes where a grandmaster trainer is able to draw on his rich and varied experience and provide chess students with valuable tips. There are five more lectures on positional chess. The CD contains a total of over three hours of high-quality video lectures and training from an active Grandmaster.
The following subjects are part of the CD:
Introduction 5:34 min
Calculation 29:23 min
Commitment and Defence 17:02 min
Zwischenzug 16:56 min
Anatomy of Blunders I 19:49 min
Anatomy of Blunders II 15:44 min
Positional Pawn Sacrifi ce I 8:35 min
Positional Pawn Sacrifi ce II 20:08 min
Bad Pieces I 20:25 min
Bad Pieces II 22:14 min
Blockade 20:00 min.
British grandmaster Peter Wells, 39, already has made a name as the author of several chess books. In addition he is an experienced trainer. Anyone who subscribes to ChessBase Magazine will know the profound contributions on the subject of chess strategy by Peter Wells. They have appeared in CBM since volume 77.
This CD was produced in the new Fritz 8 Chess Media System. All lectures are presented with full video pictures and synchronised chess graphics.
System Requirements: Pentium 233 or equivalent, 64 Mb RAM, CD-ROM drive, sound card, mouse, Windows VistaXP/2000/Me, Windows Media Player 9. Attention: this course is a supplementary program for Fritz8 or higher and can only be run if the chess program Fritz8 or above is installed on your PC. Fritz8 is not supplied with this training course.

FRITZ TRAINER: ATTACKING CHESS VOL. 1 (PC-CD)

Ref: CPFM2

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Jacob Aagaard
Attacking chess is a very important subject. Danish I.M. Jacob Aagaard has chosen a very beautiful example for his introduction, which illustrates important factors required for a successful attack. This is followed on the CD by 10 more files in Chess Media Format; these constitute an entertaining and instructive introduction to the art of conducting an attack. In total there are more than three hours of top class video training on the CD.
Danish International Master Jacob Aagaard, 30, has already published a whole array of chess books, including the prize-winning "Excelling at chess".
This CD is based on the new instructional Fritz8-Chess Media System: all the lectures are presented in their entirety with video pictures and synchronised chess graphics.
System requirements: PC 233, 64 MB RAM, CD-ROM drive, sound card, mouse, Windows Vista/XP/2000/Me, Windows Media Player 9.
Attention: this course is a supplementary program for Fritz8 or higher and can only be run if the chess program Fritz8, Shredder8, Junior8, Hiarcs9 or Tiger15 or more recent version is installed on your PC. None of Fritz8, Shredder8, Junior8, Hiarcs9 or Tiger15 are supplied with this training course.
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FRITZ TRAINER: ATTACKING CHESS VOL. 2 (PC-CD)

Ref: CPFM3

Price: £18.67 (£22.40 Including VAT at 20%)
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Jacob Aagaard
For the second part of his work on the attack, I.M. Jacob Aagaard has selected more instructive examples which he presents on camera. There are 12 files in Chess Media Format; these show typical attacking methods. In total there are more than three hours of top class video training on the CD.
The Danish International Master Jacob Aagaard, 30, has already published a whole array of chess books, including the prize-winning "Excelling at chess".
This CD is based on the new instructional Fritz8-Chess Media System: all the lectures are presented in their entirety with video pictures and synchronised chess graphics.
System requirements: PC 233, 64 MB RAM, CD-ROM drive, sound card, mouse, Windows Vista/XP/2000/Me, Windows Media Player 9.
Attention: this course is a supplementary program for Fritz8 or higher and can only be run if the chess program Fritz8, Shredder8, Junior8, Hiarcs9 or Tiger15 or more recent version is installed on your PC. None of Fritz8, Shredder8, Junior8, Hiarcs9 or Tiger15 are supplied with this training course.
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