Printable Numpath puzzle game (compare to Numbrix)

Printable, reloadable, and always new, Numpath puzzle brain-teaser games are here. Print out this page, and play at your convenience. Simply fill in the empty squares with numbers, ending up with a "path" from number one to number eighty-one. Each number must adjoin the number before and after it, horizontally or vertically (not diagonally). Enjoy!
                                             
     31302938596265     
     2                         64     
     25                         81     
     24                         80     
     23                         79     
     12                         78     
     11141744494877     
                                             
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31     57     59     63     65
     33     53     61     1     
29                                   67
     35                         3     
27                                   69
     37                         79     
25                                   71
     21     45     13     81     
23     17     15     75     73
                                             
     737855141343     
     72                         2     
     69                         1     
     68                         44     
     63                         43     
     64                         36     
     23222120333237     
                                             
13     3     53     59     81
     11     1     55     61     
15                                   79
     9                         63     
17                                   77
     29                         67     
19                                   75
     27     25     41     69     
21     23     39     71     73
                                             
     15242764678079     
     16                         74     
     17                         51     
     18                         52     
     19                         53     
     2                         54     
     3343338394243     
                                             
43     47     53     61     63
     45     49     55     59     
41                                   65
     37                         81     
39                                   67
     5                         77     
7                                   69
     11     25     19     73     
9     13     15     17     71
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