Newsgroups: rec.puzzles
From: Dan Hoey <haoyuep@aol.com>
Date: Mon, 17 Mar 2008 10:26:53 -0400
Subject: Re: Enigma 1475 - Lines of thought

Chappy wrote:
> So what do you get as the answer to the question, "How many of the
> combinations?"

Same as everyone, 12+2v straight sections and 12-2v corners, where v
is the number of inner corners, or "7s".  By inspection, v is 0, 1, 2,
3, or 4.

Dan