Manual de Houdini 3 2012 | Page 145

Reference

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which would otherwise take too long.
“Heuristic search” allows you to specify the maximum number of flight squares
the black king can have.
“Threat with check” specifies how deep a mate threat should be for it to be
considered.
The program not only displays the key move of the problem, but also generates a
complete solution, with all alternative defences by Black. If the problem has more than
one solution (i.e., it is “cooked”), then alternate solutions will be given as lines to the
first move of White. “Last move” specifies whether the last move of the problem,
which is usually obvious, should be included or not.

3.5.14 Let`s Check
3.5.14.1 Description
"Le t s che ck" is a completely new analysis function which will revolutionise the chess
world for years to come.
Engine analysis has changed chess forever. This is so obvious that many aspects are
now taken for granted. For instance, a slow engine on an old notebook does not
always tell the truth, and yet people only wait a few seconds before uncritically
making the recommended move. Popular positions are analysed by thousands of
players over and over again. This means an immense amount of time and electrical
enetgy, both of which are finite ressources.
The program offers help. Every position that has been analysed by anyone at any time
is voluntarily saved on a server. The possible engine variations are then available to
everyone who looks at this position. We call this system „Let’s Check“ because
detailed analysis can be gained immediately without investing any time.
Whoever analyses a variation deeper than his predecessor overwrites his analysis. This
means that the Let’s Check information becomes more precise as time passes. The
system depends on cooperation. No one has to publish his secret openings
preparation. But in the case of current and historic games it is worth sharing your
analysis with others, since it costs not one click of extra work. Using this function all
of the program's users can build an enormous knowledge database. Whatever position
you are analysing the program can send your analysis on request to the "Let’s check"
Server. The best analyses are then accepted into the chess knowledge database. This
new chess knowledge database offers the user fast access to the analysis and
evaluations of other strong chess programs, and it is also possible to compare your
own analysis with it directly. In the case of live broadcasts on Playchess.com
hundreds of computers will be following world class games in parallel and adding their
deep analyses to the "Let's Check" database. This function will become an
irreplaceable tool for openings analysis in the future.

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