Manual de Fritz 15 2015 | Page 263

Reference

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engines. On the other hand, from a chess point of view, it is very interesting to
compare the conclusions of two different engines. One might be tactically more
reliable, the other more positionally sound.
It is also interesting to compare two versions of the same engine. The “compare
analysis” function allows you to check what each finds at a specific search depth, or
how many position nodes each of these engines actually checks to reach a certain
search depth.
You can set a variation colour for each engine (when loading it) so that it is easy to
tell at a glance which engine produced the individual lines.
How to load engines:
New allows you to select engines from the list of all available engines.
Edit allows you to change the settings for the engines already loaded (hash table
size, variation colour).
You can use “compare analysis” on a number of games (in the database window). In
this case, specify whether the analysed games should replace the original entries or if
they should be appended to the end of the database.
Please note: You can load an engine more than one at a time and then use Edit –
Parameters to set different engine parameters. In this way you can find out how the
settings affect the performance of the engine.

3.8.14 Permanent brain
Pe rm a ne nt Bra in is the term used to denote the program thinking on the opponent's
time.
After it has executed a move, the program tries to guess what the opponent will play,
and starts calculating a reply to that. If it has guessed right, it will play its reply
quickly - sometimes immediately. The program shows the move it is expecting in the
engine window.

In engine tournaments, if two engines are playing against each other, using permanent
brain slows down the side that is computing the next move (because it has to share
resources with the other side's permanent brain).

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