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 Numerical path (Posted on 2008-09-23)
Draw only one continuous line into the 8x8 diagram below, which begins in the left cell above (with a “01”) and ends in the right bottom cell (with a “33”). The line must pass through all the numbers from 01 to 33 (through the center of each cell), once and only once through each one, and can run only horizontally or vertically (not diagonally). Besides, the line may not cross itself.

Far from being a trial and error problem, this can be solved logically.
```     +-----+-----+-----+-----+-----+-----+-----+-----+
| 01  | 16  | 05  | 20  | 25  | 09  | 21  | 01  |
+-----+-----+-----+-----+-----+-----+-----+-----+
| 18  | 10  | 27  | 26  | 11  | 17  | 12  | 32  |
+-----+-----+-----+-----+-----+-----+-----+-----+
| 32  | 11  | 15  | 19  | 08  | 06  | 27  | 20  |
+-----+-----+-----+-----+-----+-----+-----+-----+
| 17  | 04  | 13  | 24  | 30  | 28  | 31  | 02  |
+-----+-----+-----+-----+-----+-----+-----+-----+
| 25  | 10  | 02  | 26  | 04  | 28  | 22  | 13  |
+-----+-----+-----+-----+-----+-----+-----+-----+
| 05  | 14  | 30  | 08  | 15  | 31  | 19  | 06  |
+-----+-----+-----+-----+-----+-----+-----+-----+
| 23  | 07  | 24  | 16  | 29  | 22  | 18  | 19  |
+-----+-----+-----+-----+-----+-----+-----+-----+
| 03  | 12  | 09  | 03  | 07  | 14  | 23  | 33  |
+-----+-----+-----+-----+-----+-----+-----+-----+```

 See The Solution Submitted by pcbouhid Rating: 2.5000 (2 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
 re: Solution - alternative 15 and 28 | Comment 2 of 11 |
(In reply to Solution by Dej Mar)

+-----+-----+-----+-----+-----+-----+-----+-----+
| 01  |     | 05 ---20 ---25 ---09 ---21  |     |
+- | -+-----+- | -+-----+-----+-----+- | -+-----+
| 18  | 10 ---27  |     |     | 17 ---12  |     |
+- | -+- | -+-----+-----+-----+- | -+-----+-----+
| 32 ---11  | 15 ---19  | 08 ---06  |     |     |
+-----+-----+- | -+- | -+- | -+-----+-----+-----+
|     |     | 13  | 24 ---30  |     |     |     |
+-----+-----+- | -+-----+-----+-----+-----+-----+
|     |     | 02 ---26 ---04 ---28  |     |     |
+-----+-----+-----+-----+-----+- | -+-----+-----+
|     |     |     |     |     | 31  |     |     |
+-----+-----+-----+-----+-----+- | -+-----+-----+
|     |     |     | 16 ---29 ---22  |     |     |
+-----+-----+-----+- | -+-----+-----+-----+-----+
|     |     |     | 03 ---07 ---14 ---23 ---33  |
+-----+-----+-----+-----+-----+-----+-----+-----+

 Posted by Leming on 2008-09-23 17:59:14

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