Much water has flowed over the dam since this book went to press in
Moscow. One might expect that PIONEER would have made substantial
advances-unfortunately it has not. There are reasons: the difficulty of
the problem, the disenchantment of the mathematicians (because of the
delays and drawing out of the work), and principally the insufficiency
and some- times complete lack of machine time. The general method used
by PIONEER to solve complex multidimen- sional search problems had
already been formulated at that time. It was supposed that the
successful completion of the chess program PIONEER-l would provide a
sufficient validation for the method. We did not succeed in completing
it. But, unexpectedly, PIONEER's method obtained a different kind of
validation. Since our group of mathematicians works at the Institute for
Electroen- ergy, we were invited to solve some energy-related problems
and were assigned the task of constructing a program that would plan the
recondi- tioning of the equipment in power stations-initially for one
month. Until then, the technicians had been preparing such plans without
the aid of computers. Although the chess program was not complete even
after ten years, the program PIONEER-2 for computing the monthly repair
schedule for the Interconnected Power System of Russian Central was
completed in a few months. In mid-October of 1980 a medium-speed
computer constructed the plan in 40 seconds. When, at the end of the
month, the mathematician A.