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- From: keving@cory.Berkeley.EDU (Kevin Gong)
- Subject: Re: Game of pentominos
- Message-ID: <1992Dec16.195723.7866@pasteur.Berkeley.EDU>
- Sender: nntp@pasteur.Berkeley.EDU (NNTP Poster)
- Nntp-Posting-Host: cory.berkeley.edu
- Organization: University of California, at Berkeley
- References: <martel.724342292@marvin> <1992Dec15.154734.23894@odin.diku.dk> <1992Dec16.182611.10896@progress.com>
- Date: Wed, 16 Dec 1992 19:57:23 GMT
- Lines: 33
-
- In article <1992Dec16.182611.10896@progress.com> neil@progress.COM (Neil Galarneau) writes:
- >torbenm@diku.dk (Torben AEgidius Mogensen) writes:
- >
- >>martel@marvin.mr.sintef.no (Paulo Martel) writes:
- >
- >>>After several tries I gave up a combinatorial analysis of the game of
- >>>pentominos. Would someone point me to a reference, or briefly explain
- >>>how one could compute the total number of solutions for a grid of a
- >>>given size (6x10, 5x12, 4x15, 3x20).
- >
- >
- >Ah... Good old pentominoes.
- >
- >Several years ago, motivated by a passage in one of Clarke's novels, several
- >of us programmed pentominoes.
- >
- >It is not very hard to solve it, it is a lot harder to solve it efficiently.
- >
- >The programming was a lot of fun.
-
- A great new book on polyominoes is "Polyominoes: A Guide to Puzzles and
- Problems in Tiling," by George E. Martin (1991, Mathematical Association of
- America). It says that there are 2339 solutions to 6x10, 1010 solutions to
- 5x12, 368 to 4x15, and 2 to 3x20.
-
- Also, for those who are interested, I've written a program for the Macintosh
- called "Polyominoes." It has 15 different puzzles for pentominoes, and you
- can play Golomb's pentomino game on any of the boards (he originated the
- game on the simple 8x8 board). I intend to later add support for pieces
- other than pentominoes, and a puzzle solver. If you'd like a copy, send
- me e-mail (or see if it's still at sumex.stanford.edu, anonymous ftp).
-
- - kevin
-