NEW YORK CITY: The latest scientific attempt to build a better brain goes on display Saturday when world chess champion Garry Kasparov gives a rematch to IBM's Deep Blue supercomputer. The new, improved Deep Blue can think twice as fast as the predecessor that lost to Kasparov 4-2 last year. Tutored by international grand chess champion Joel Benjamin, the machine now knows more about chess as well. But Kasparov remains confident. His battle plan? Detect weak points and keep switching strategies, betting that Deep Blue will be slow to adapt.