Saturday is presidential primary day in Louisiana where 20 delegates are at stake. Mitt Romney, Rick Santorum, Newt Gingrich and Ron Paul all campaigned there Friday. Romney leads in national polling, but Santorum is ahead in Louisiana.
On this day in 1997, Boris Kasparov, the world's top chess player, faced off against IBM's chess-playing supercomputer, Deep Blue — and lost. This week, professional poker players are trying something similar in Pittsburgh, and they're winning.
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