Hi Ed,

Here's the solution to the Orthogonal Sudoku (I hope -- I've checked it 
for uniqueness of 2-digit numbers, but haven't verified the two 
component sudoku puzzles are right... I assume they are, by 
construction, of course...).

59 23 96 | 18 42 75 | 84 61 37
88 62 35 | 57 21 94 | 16 43 79
17 41 74 | 89 63 36 | 55 22 98
---------+----------+---------
26 99 53 | 45 78 12 | 67 34 81
65 38 82 | 24 97 51 | 49 76 13
44 77 11 | 66 39 83 | 28 95 52
---------+----------+---------
93 56 29 | 72 15 48 | 31 87 64
32 85 68 | 91 54 27 | 73 19 46
71 14 47 | 33 86 69 | 92 58 25

Cheers,
Steve Tregidgo
-------------------------------------------------
Hi

This was a really fun variant.

The solution:

59 23 96 18 42 75 84 61 37

88 62 35 57 21 94 16 43 79

17 41 74 89 63 36 55 22 98

26 99 53 45 78 12 67 34 81

65 38 82 24 97 51 49 76 13

44 77 11 66 39 83 28 95 52

93 56 29 72 15 48 31 87 64

32 85 68 91 54 27 73 19 46

71 14 47 33 86 69 92 58 25

Best regards,

Stefan Bengtsson
-------------------------------------------------
Dear Ed,

This needs no guessing/backtracking,
just keep track of used pairings.

Easier than 'magic sudoku'.

59 23 96 18 42 75 84 61 37
88 62 35 57 21 94 16 43 79
17 41 74 89 63 36 55 22 98
26 99 53 45 78 12 67 34 81
65 38 82 24 97 51 49 76 13
44 77 11 66 39 83 28 95 52
93 56 29 72 15 48 31 87 64
32 85 68 91 54 27 73 19 46
71 14 47 33 86 69 92 58 25


Yours sincerely,
  Kevin A. Woodburn
-------------------------------------------------
More Solvers:
Konstantin Knop, Michael Keller, Evgeni Lukin, 
The Valery's
-------------------------------------------------
Hi! Thank you for your nice Sudoku!!!
 
59 23 96 18 42 75 84 61 37
88 62 35 57 21 94 16 43 79
17 41 74 89 63 36 55 22 98
 
26 99 53 45 78 12 67 34 81
65 38 82 24 97 51 49 76 13
44 77 11 66 39 83 28 95 52
 
93 56 29 72 15 48 31 87 64
32 85 68 91 54 27 73 19 46
71 14 47 33 86 69 92 58 25
Tony Yang
-------------------------------------------------
Dear Ed Pegg

Perhaps it is much to late but I just see it now ( because my computer is crashed) but is was plesant to solve

Greetings

Odette De Meulemeester

www.pentominoes.be
-------------------------------------------------

59 23 96 18 42 75 84 61 37
88 62 35 57 21 94 16 43 79
17 41 74 89 63 36 55 22 98
26 99 53 45 78 12 67 34 81
65 38 82 24 97 51 49 76 13
44 77 11 66 39 83 28 95 52
93 56 29 72 15 48 31 87 64
32 85 68 91 54 27 73 19 46
71 14 47 33 86 69 92 58 25

thank you for the good and fine time I had
during the resolution

Eduardo Fernandez Martin
From ANDORRA