Perfect magic squaresContact / guestbook3x3 magic square3x3 magic square, explanationSudoku method (1)Sudoku method (2)Sudoku method (3)Pan magic 4x4 squarePan magic 4x4 square, explanationTransformation methodPan magic 5x5 squarePan magic 5x5 square, explanation6x6 magic squareKhajuraho methodKhajuraho method, explanationBasic pattern method (1)Basic pattern method (2)Basic pattern method (3)Analysis Franklin panm. 8x8Basic key method (1)Basic key method (2)pan magic 9x9 squarePan magic 15x15 squarePan magic 27x27 squareBordered squaresEach magic sumWater retention challengeFavorite Links
Perfect magic squares
Water retention challenge
How to retain as much as possible water within magic squares?
 
 
A special challenge to produce (4x4 and bigger) magic squares is attempting to retain as much as possible water
(given the size of the magic square). See for example the 4x4 (pan)magic square below.
 
 
16
3
10
5
2
13
8
11
7
12
1
14
9
6
15
4
 
 
The value in a cell represents the height of a tower. Heigher cells surround lower cells vertical and horizontal (not
diagonal), which makes it possible to fill the surrounded cells (imaginary) with water. In the above mentioned square
two cells are surrounded. The total of 10-8 + 10-1 = 11 units of water can be retained.
 
 
See (the idea of) this funny game on the website of Craig Knecht:

www.knechtmagicsquare.paulscomputing.com

Perfect magic squares|Contact / guestbook|3x3 magic square|3x3 magic square, explanation|Sudoku method (1)|Sudoku method (2)|Sudoku method (3)|Pan magic 4x4 square|Pan magic 4x4 square, explanation|Transformation method|Pan magic 5x5 square|Pan magic 5x5 square, explanation|6x6 magic square|Khajuraho method|Khajuraho method, explanation|Basic pattern method (1)|Basic pattern method (2)|Basic pattern method (3)|Analysis Franklin panm. 8x8|Basic key method (1)|Basic key method (2)|pan magic 9x9 square|Pan magic 15x15 square|Pan magic 27x27 square|Bordered squares|Each magic sum|Water retention challenge|Favorite Links