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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.)
 re(2): Strange | Comment 5 of 7 |
(In reply to re: Strange by Charlie)

I also gave up, but your post give me the desire to take a look, and the first solution I proved, that was it.

```+---+---+---+---+---F
| A | B | A |   | B |
+===+===+===+===+===^
|   | B |   |   | B |
^---+---v===+===+===+
| A |   | B |   | A |
^---v===+---+===+===^
| A | A |   | A | B |
^===+---+===^---+---+
| B |   | B |   | A |
S=======^---+---+---+```

 Posted by armando on 2016-04-29 11:20:54

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