perplexus.info :: Logic : Four Squared

Four Squared (Posted on 2006-10-26)

        Grid A                    Grid B      
     A   B   C   D             A   B   C   D  
   +---+---+---+---+         +---+---+---+---+
1  |   |   |   |   |      1  |14 |23 |34 |14 |
   +---+---+---+---+         +---+---+---+---+
2  |   |   |   |   |      2  |31 |42 |26 |26 |
   +---+---+---+---+         +---+---+---+---+
3  |   |   |   |   |      3  |22 |24 |44 |29 |
   +---+---+---+---+         +---+---+---+---+
4  |   |   |   |   |      4  |12 |32 |19 |16 |
   +---+---+---+---+         +---+---+---+---+

The numbers 1 to 16 are to be placed in grid A, so that consecutive numbers are not adjacent in any direction, including diagonally. Nor do they appear in the same row, column or any diagonal.

The number in each cell of grid B is the sum of the horizontal and vertical neighbors of the corresponding cell in grid A.

NB. The letters and numbers around the edge of the grid serve no purpose for the solver. They are to be used for identifying cells in the solution.

See The Solution Submitted by Josie Faulkner

Rating: 4.4167 (12 votes)

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
Puzzle Thoughts	K Sengupta	2022-06-06 03:30:44
re: Solution	Josie Faulkner	2006-11-03 18:54:26
Solution	nikki	2006-11-03 15:50:16
re: Detailed Solution	Josie Faulkner	2006-10-31 05:09:45
Detailed Solution	rs	2006-10-31 04:44:53
re: Solution: Took a looong time :(	Josie Faulkner	2006-10-31 04:08:27
Solution: Took a looong time :(	rs	2006-10-31 03:44:46
RE: Solution	Guest	2006-10-27 19:30:06
Solution	Guest	2006-10-27 19:25:21
re(3): computer solution	Josie Faulkner	2006-10-27 10:31:19
re(2): computer solution	Charlie	2006-10-27 09:22:36
re(2): No Subject	Josie Faulkner	2006-10-27 05:45:21
re: computer solution	Josie Faulkner	2006-10-26 17:42:44
re: A trivial way to solve this	Josie Faulkner	2006-10-26 17:36:13
re: No Subject	Josie Faulkner	2006-10-26 16:58:18
computer solution	Charlie	2006-10-26 16:11:07
No Subject	BRYN	2006-10-26 15:37:08
A trivial way to solve this	Old Original Oskar!	2006-10-26 14:18:36

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