function K = knightstour
% KNIGHTSTOUR  A Knight's tour magic square.

K = [ ...
    50    11    24    63    14    37    26    35
    23    62    51    12    25    34    15    38
    10    49    64    21    40    13    36    27
    61    22     9    52    33    28    39    16
    48     7    60     1    20    41    54    29
    59     4    45     8    53    32    17    42
     6    47     2    57    44    19    30    55
     3    58     5    46    31    56    43    18];