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<p>1951. This may have been the first video game. The game completely exhausted the Pilot ACE's memory. The draughts program failed due to program errors when it first ran at NPL on 30 July 1951. When Strachey heard about the <a href="page.php?w=Manchester_Mark_1">Manchester Mark 1</a>, which had a much bigger memory, he asked his former fellow-student Alan Turing for the manual and transcribed his program into the <a href="page.php?w=operation_code">operation code</a>s of that machine by around October 1951. By the summer of 1952, the program could</p><p>
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