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23

It's because 1. exf8=Q+ Kxh7 2. Rxd7?? would be stalemate. I think it is a even a theoretical draw after 1. exf8=Q+ Kxh7 2. Qg7+. Therefore 1. exf8=B+! (with check!) is better, since white then can keep an extra piece and win easily. [FEN "5r2/3qPbkB/8/7P/8/8/8/1K1R4 w - - 0 1"] 1. exf8=Q+ (1. exf8=B+!) Kxh7 2. Rxd7? (2. Qg7+)


6

The score 0.53/21 means the chess engine evaluates the position after 6... Ng8-f6 at 0.53 pawns (or 53 centipawns) in White's favour after completing a search depth of 21 ply (or half-moves). It means White has a slight advantage. Similarly -0.25/24 means the engine evaluates the position after 6... e7-e6 as 0.25 pawns (or 25 centipawns) in Black's favour ...


6

Looks like its a stock image: the oldest source of the image I could find from 2008: http://www.grafamania.net/clipart/6201-digital-vision-dv297surreal-business.html


4

Fritz 17 is really just the same Chessbase GUI bundled with a chess engine Fritz 17. Depend on what version you buy, your Chessbase product may come with MegaDatabase - a huge collection of master chess games. Fritz 17 doesn't give you that. EDITED: Fritz 17 is not a public chess engine in the sense that it only works for Chessbase. I'm not aware it runs on ...


4

I also have PowerBook 2019, and Stockfish 10, and I can confirm what you found, but there is an explanation. The moves suggested in the PowerBook are from actual human games. They are intended, specifically, to give the computer a human opening book, rather than it just playing on its own. You will find these games in the database Powergames2019 that came ...


4

When you do File > Save > Save it adds the game to the current database at the end. So scroll to the bottom of the database list of games, and you'll see those two games. Instead, to save the game in place, you do File > Save > Replace, that "replaces" the current game with the one with your newly added notes. It is counter-intuitive.


4

Fritz's 2.Kf5 is a mistake because 2.Kd5 is the only winning move according to the tablebase. Maybe Fritz suffered from the horizon effect (couldn't see far enough ahead) which turned the win into a draw. After that, a draw by repetition doesn't seem unreasonable. Playing black, Fritz resigns but that's after seven moves, so the "horizon" is now closer, ...


3

Nevermind, figured it out. File > options > Clocks+Notations > Figurines radio button


3

Go to Engine->Change main Engine... All you have to do then is select StockFish and click OK. Then click on New Game icon and the change will be applied, you should see title change from Fritz to StockFish. All that is left is to setup a position and run analysis...


3

It's available on Steam (Fritz Chess 14*), or the ChessBase shop (Deep Fritz 14). *The Steam version is significantly cheaper. The developer makes some claims in a discussion thread that it's equivalent to true Deep Fritz (with the multicore 64-bit support enabled). I'm not sure if that's actually the case, though; the price reduction is suspicious, and ...


2

Deep Fritz 14, Houdini 4, Komodo 9 and Rybka 4 all use the same Graphic User Interface (GUI). It allows you to blundercheck, do full game analysis, calculate elo ratings for sets of games. It has a Handicap and Fun mode for dumbing down these engines, so you have a chance. You can also play timed games, and adjust the engine's style. There is also a ...


2

I'm not sure I would recommend trying to gauge your ELO from a computer software alone. There may be a way to get some estimation, but I'm not confident about that. Besides, the best way to get an accurate idea of how well you play is by playing people! Go out there and play some chess!


2

It's very unlikely you'll be able to compare opening books just by playing against them. Main lines will be approximately same in all books, what you really want to see is how "wide" these books are, do they contain only a few main lines, or plenty of variations as well. The easiest way to do that would be to convert the books back to the readable (PGN?) ...


2

It appears to be for future use: Although it is two versions later, to quote the Fritz 16 online manual: "Show Plans - Displays the planned Manoeuver of the engine. The function is not supported by any engine!" Fritz 16 Manual


1

If you can save the game as PGN then pgn-extract has options to remove commentary, variations and NAGs, either separately or in combination. It's a free tool. Disclosure: I am the author of pgn-extract.


1

I want to delete all annotations only (excluding variations). What is the way to do it? The simple and obvious way to do this which works in all chess engine GUIs which support PGN is to save the game as PGN. PGN files are just text so you can then edit the file with a text editor and manually remove whatever you like, save it and then open again with Fritz ...


1

I answered this question earlier on this site. Is there some way to search? The best I could say with my research is that there is a program being written to do it but it is not out yet. And google says according to one source to do a double conversion such as with a program like fritz to change it going in and export it different coming back out.


1

Just tested it and it may have been fixed. It let me complete the mating move. Just in case, the site is https://fritz.chessbase.com/


1

It’s also possible within Chessbase’s Fritz UI, you just save the desired sequence of moves as a database and then define that database as the opening database for the engine match.


1

You can see help menu for user manual. Or you can see this link for a more detailed manual, written for Fritz 13, but there is no difference at all. Engines are changing but GUIs are almost the same.


1

According to the website for This Week In Chess, the release date for Fritz 15 is November 27, 2015. Also note that now they only sell one version of the product. There no longer is a separate Deep version.


1

A Powerbook is an engine aided opening book simply. They collect games of strong players, collect strong engines matches, build a tree, go through the tree using the engine, optimize the book with engine again. Result is a refined opening book.


1

Fritz Powerbook is an opening book for the Fritz chess engine based on the latest grandmaster games. For a chess engine you want Deep Fritz, Komodo, or one of the other programs listed under the chess programs category (houdini, junior?).


1

The powerbook contains 1.5 million games of grandmasters (including the most recent ones). For the power book, these games have been processed so you can see their openings, and for each opening position you can see all the moves that have been played as well as the associated winning/drawing/losing rates. So basically, it is an up-to-date overview of ...


1

Just adding a few details to Student T's answer: Fritz denotes a chess engine as well as an (graphical user) interface. The reason for this is a historical one. Back in the times, almost all commercial chess engines would bring their own interfaces (Fritz, ChessAssistant, Shredder, Rebel, ...) - and a lot more stuff like databases. The hegemony of those ...


1

Houdini is a chess engine written by an external developer. It is not a user interface that you can visually interact. This is where the confusion: when ChessBase mentions Houdini, they actually mean running the Houdini chess engine on their ChessBase user-interface. If you search on Wikipedia, Houdini is simply a chess engine and has nothing to do with ...


1

Chess engines use centi-pawns. https://chessprogramming.wikispaces.com/Centipawns


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