The most famous head to head battle was in 1997 when a computer called Deep Blue defeated world chess champion Garry Kasparov.

BBC: IBM supercomputer set for Jeopardy quiz show showdown

If the machine works as researchers think it will, chess masters ought to look out -- Blue Gene would be 1, 000 times more powerful than the Deep Blue machine that defeated world chess champion Garry Kasparov in 1997.

CNN: Big Blue's SMASHing Blue Gene

The Blue Samurai, unchanged for their fourth straight World Cup match, sat deep and attempted to snuff out the opposition, while their opponents conceded a series of niggling fouls every time Japan looked to strike on the counter.

BBC: Paraguay 0-0 Japan (5-3 pens)

The Blue Mountains national park is a World Heritage site and covers a million hectares, with huge cliffs, deep rainforest gulleys, sandstone canyons and waterfalls.

BBC: British tourist falls to death from Australia waterfall