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2007-03-15 23:12:33
1 | -2 | -13 | 14 | 1 | -9 | -4 | 12 | 1 | -2 | -7 | 8 | 1 | -2 | -7 | 8 | |||
12 | -11 | -8 | 7 | 14 | -6 | -15 | 7 | 14 | -13 | -12 | 11 | 12 | -11 | -14 | 13 | |||
-4 | 3 | 16 | -15 | -13 | 5 | 16 | -8 | -10 | 9 | 16 | -15 | -10 | 9 | 16 | -15 | |||
-9 | 10 | 5 | -6 | -2 | 10 | 3 | -11 | -5 | 6 | 3 | -4 | -3 | 4 | 5 | -6 |
說明:
(1) 組成數: 正負的1~16
(2) 行,列,斜,以及等分的2階子陣,是幻和= 0
(3) 將負數看成正數時,幻方不成立.