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 Polyomino Puzzle (Posted on 2005-11-22)
The squares of the six polyominoes depicted below are either filled or empty. What logic was used to determine whether a square filled?
+--+--+--+--+--+              +--+--+
|##|  |##|  |##|              |##|##|
+--+--+--+--+--+  +--+--+     +--+--+
|  |  |  |  |     |##|##|     |##|##|
+--+--+--+--+  +--+--+--+--+  +--+--+
|##|  |##|  |##|  |  |##|  |  |  |
+--+--+--+  +--+--+--+--+  +--+--+
|  |        |##|  |##|     |##|
+--+        +--+--+--+--+  +--+
|##|  |##|
+--+--+  +--+--+--+
|  |##|     |##|
+--+--+  +--+--+--+--+  +--+
|##|##|  |##|  |  |  |
+--+--+  +--+--+--+--+     +--+
|##|##|        |##|##|     |##|
+--+--+--+--+  +--+--+  +--+--+--+
|  |  |  |  |##|##|  |  |  |  |
+--+--+--+  +--+--+  +--+--+--+
|##|  |  |           |##|  |##|
+--+--+--+           +--+--+--+

 See The Solution Submitted by Brian Smith Rating: 3.7500 (4 votes)

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 All that I found, so far. | Comment 11 of 21 |

Draw a 5x5 grid.

Each piece with its corresponding piece obtained by a rotation of 180 degrees, placed in the 5x5 grid, make symetrical drawings in respect of the two main diagonals.

Edited on November 24, 2005, 9:42 am

Edited on November 24, 2005, 9:47 am

Edited on November 24, 2005, 9:49 am

Edited on November 24, 2005, 1:59 pm
 Posted by pcbouhid on 2005-11-24 09:38:31

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