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 Draw a Line to Partition the Grid (Posted on 2016-04-25)
Draw a line following the grid lines conforming the the following rules:
1 - The line starts from S and ends at F.
2 - The line does not cross or overlap itself at any point.
3 - The line divides the grid into regions each with exactly two As and two Bs.
```+---+---+---+---+---F
| A | B | A |   | B |
+---+---+---+---+---+
|   | B |   |   | B |
+---+---+---+---+---+
| A |   | B |   | A |
+---+---+---+---+---+
| A | A |   | A | B |
+---+---+---+---+---+
| B |   | B |   | A |
S---+---+---+---+---+
```
An example of a solved grid:
```+   +   +---F
B   A | A
+---+---+   +
| B
S   +   +   +
```

 No Solution Yet Submitted by Brian Smith No Rating

Comments: ( Back to comment list | You must be logged in to post comments.)
 Solution? | Comment 1 of 7
Is it a valid solution if the path meets itself at a point, but doesn't actually cross over itself?

For example: http://i.imgur.com/cQjOalZ.png

Starting from S it goes:

R R U U R U L L D L U U U R R D R D R D R U U U

The bolded spots are where the path passes through the same intersection, but doesn't cross itself.

 Posted by tomarken on 2016-04-26 11:00:19

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