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31
This number is a prime.
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Just two 1st-move pairs in a chess game yield a maximum of
31 legal 2nd-move options for White: White's double advance
of King's Pawn followed by either of 2 double advances
resulting in an option to capture. [Merickel]
Submitted: 2016-08-17 16:43:48; Last Modified: 2016-08-17 17:13:34.
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