Manual de Houdini 3 2012 | Page 246

246

Houdini Help
X in the Mate Search option. This will prevent Houdini from going too deep in variations
that don't lead to mate in the required number of moves.

End Game Table Bases
For the Gaviota EGTB support you'll need to install the Gaviota EGTB files.
For the Nalimov EGTB support you'll need to install the Nalimov EGTB files.
For the Scorpio bitbase support (introduced in Houdini 3) you'll need to install the
Scorpio bitbases.
ScorpioPath
Folder containing the Scorpio bitbase files.
ScorpioCache
Amount of Scorpio cache memory in MB.
Default 32, min 4, max 1024.
Hard Probe Depth
Minimum search depth for EGTB probing that can produce a relatively slow disk access,
i.e. a "hard" EGTB probe.
Default 24, min 2, max 99.
A value of 24 corresponds to 12 ply deep, meaning Houdini will only probe if the
remaining search depth is at least 12 plies.
You can reduce this value if the table base files are installed on a very fast disk, or if
you are running less than 4 threads.
Soft Probe Depth (for Gaviota or Scorpio)
Minimum search depth for EGTB probing that uses only the memory cache, i.e. a "soft"
EGTB probe.
Default 16, min 2, max 99.
A value of 16 corresponds to 8 ply deep, meaning Houdini will only probe if the
remaining search depth is at least 8 plies.
You can reduce this value if you are running less than 4 threads. With a single thread
a Soft Probe Depth of 6 can be used successfully, with 4 to 6 threads the default
value of 16 is more appropriate.
This feature is not available for the Nalimov EGTB, the Nalimov probing code does not
support soft probing.

Save: This saves the engine modifications. This opens a dialog to select the filename
for the stored parameters. The extension of the configuration file is *.param.
Load: This opens a dialog to load previously stored engine parameters. The parameter
files can be found in the folder Engine Parameter.

© ChessBase 2012