An artificial intelligence software contest devised as an experiment by mathematician Alan Turing will be held this year in his old office at wartime code-breaking HQ Bletchley Park.
The location was chosen to mark the centenary of his birth in 1912.
During the Turing Test a computer program must use natural language and hold a conversation to convince a human interrogator that it is a normal person rather than a machine.
The exercise was described in Turing's paper
Computing Machinery and Intelligence, which was published four years before his death in 1954.