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For a game of k in a row on an n x n board, for what values of k and n is there a win?

competition/games/go-moku Added material

Problem

For a game of k in a row on an n x n board,  for what values of k and n is
there a win?  Is (the largest such) k eventually constant or does it increase
with n?
Show solution
Berlekamp, Conway, and Guy's _Winning_Ways_ reports proof that the
maximum k is between 4 and 7 inclusive, and it appears to be 5 or 6.
They report:

. 4-in-a-row is a draw on a 5x5 board (C. Y. Lee), but not on a 4x30
    board (C. Lustenberger).

. N-in-a-row is shown to be a draw on a NxN board for N>4, using a
    general pairing technique devised by A. W. Hales and R. I. Jewett.

. 9-in-a-row is a draw even on an infinite board, a 1954 result of H. O.
    Pollak and C. E. Shannon. 

. More recently, the pseudonymous group T. G. L. Zetters showed that
    8-in-a-row is a draw on an infinite board, and have made some
    progress on showing infinite 7-in-a-row to be a draw.

Go-moku is 5-in-a-row played on a 19x19 go board.  It is a win for the
first player, even in the case where 6-in-a-row doesn't win, which was
proved by:

L.V. Allis, H.J. van den Herik, and M.P.H.Huntjens, "Go-Moku solved by
new search techniques", pp.1-9 in "Proc. AAAI Fall Symposium on Games:
Planning and Learning," AAAI Press Tech. Report FS93-02, 1993,  Menlo
Park, CA

References:

http://www.cs.vu.nl/~victor/thesis.html

Additional material

In "Games of No Chance," by MSRI [Editor: "MRSI" in the original]
Publications, Volume 29, 1996, the section "Solving Nine Men's Morris," by Ralph Gasser, states that
Go-Moku has been solved.  He gives the reference

L.V. Allis, H.J. van den Herik, and M.P.H.Huntjens, "Go-Moku solved by
new search techniques", pp.1-9 in "Proc. AAAI Fall Symposium on Games:
Planning and Learning," AAAI Press Tech. Report FS93-02. Menlo Park, CA

which is not in my library, so I don't know the details.  However,
another article in the book states

"In an earlier edition of this paper, I asked if Go-Moku . . . is a win
for the first player. An affirmative answer for the unrestricted
version and for the version where 6-in-a-row doesn't count as a win
was given by Allis, van den Herik and Huntjens [1993]"

-- Monwhea Jeng <momo@physics.ucsb.edu>