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Draw a Line to Partition the Grid (Posted on 2016-04-25) Difficulty: 2 of 5
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    
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Solution 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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