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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?
```+--+--+--+--+--+              +--+--+
|##|  |##|  |##|              |##|##|
+--+--+--+--+--+  +--+--+     +--+--+
|  |  |  |  |     |##|##|     |##|##|
+--+--+--+--+  +--+--+--+--+  +--+--+
|##|  |##|  |##|  |  |##|  |  |  |
+--+--+--+  +--+--+--+--+  +--+--+
|  |        |##|  |##|     |##|
+--+        +--+--+--+--+  +--+
|##|  |##|
+--+--+  +--+--+--+
|  |##|     |##|
+--+--+  +--+--+--+--+  +--+
|##|##|  |##|  |  |  |
+--+--+  +--+--+--+--+     +--+
|##|##|        |##|##|     |##|
+--+--+--+--+  +--+--+  +--+--+--+
|  |  |  |  |##|##|  |  |  |  |
+--+--+--+  +--+--+  +--+--+--+
|##|  |  |           |##|  |##|
+--+--+--+           +--+--+--+
```

 Submitted by Brian Smith Rating: 3.7500 (4 votes) Solution: (Hide) A filled square means that the square can be removed and the remaining shape(s) can be tiled by L-triominoes. An empty square can not. This is what an L-triomino looks like. ```+--+--+ | | | +--+--+ | | +--+```

 Subject Author Date re: Solution -- needs a closer look Mindrod 2006-01-30 02:29:40 Solution Tristan 2006-01-29 23:38:55 re(4): Bob, I made a question for you in my first comment. pcbouhid 2005-11-29 07:35:00 re(2): Bob, I made a question for you in my first comment. Mindy Rodriguez 2005-11-28 23:09:52 re(3): Bob, I made a question for you in my first comment. Vernon Lewis 2005-11-28 22:47:45 re(2): Bob, I made a question for you in my first comment. pcbouhid 2005-11-28 18:35:06 re: Bob, I made a question for you in my first comment. Bob Smith 2005-11-28 17:14:55 Two Hints Brian Smith 2005-11-28 08:54:38 Hmm Joe 2005-11-26 19:52:07 Bob, I made a question for you in my first comment. pcbouhid 2005-11-25 09:48:37 All that I found, so far. pcbouhid 2005-11-24 09:38:31 Overlapping goFish 2005-11-24 03:25:22 Observations Mindy Rodriguez 2005-11-23 23:46:33 re: logical thinking Mindy Rodriguez 2005-11-23 21:15:26 logical thinking Vernon Lewis 2005-11-23 15:43:19 re(3): Too Hard Basket??? pcbouhid 2005-11-23 13:44:43 re(2): Too Hard Basket??? Vernon Lewis 2005-11-23 12:08:30 re: Too Hard Basket??? pcbouhid 2005-11-23 09:41:06 Too Hard Basket??? Vernon Lewis 2005-11-23 04:21:29 drawing a blank Mindy Rodriguez 2005-11-22 23:03:01 nothing yet pcbouhid 2005-11-22 18:27:54

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