' Combines Octanary Magic Squares into Magic Squares

' Tested with Office 2007 under Windows 7

```Sub CnstrSqrs8b()

Dim b(3, 64), a(64)

y = MsgBox("Locked", vbCritical, "Routine CnstrSqrs8b")
End

n2 = 0: n9 = 0: k1 = 1: k2 = 1
s1 = 260

t1 = Timer

For j1 = 1 To 1536
For j2 = 1 To 1536
If j1 = j2 Then GoTo 20

j10 = j1: j20 = 1: sht1 = "LnsB3": GoSub 100              'Read Sudoku Comparable Square 1
j10 = j2: j20 = 2: sht1 = "LnsB3": GoSub 100              'Read Sudoku Comparable Square 2

For j4 = 1 To 64
a(j4) = b(1, j4) + 8 * b(2, j4) + 1
Next j4

GoSub 300: If fl1 = 0 Then GoTo 20           'Check identical numbers

n9 = n9 + 1: GoSub 740                       'Print results (selected numbers)
'       n9 = n9 + 1: GoSub 750                       'Print results (squares)

20  Next j2
10  Next j1

t2 = Timer

t10 = Str(t2 - t1) + " sec., " + Str(n9) + " Solutions for sum" + Str(s1)
y = MsgBox(t10, 0, "Routine CnstrSqrs8b")

End

'   Read Sudoku Comparable Squares (Line Format)

100 For i1 = 1 To 64
b(j20, i1) = Sheets(sht1).Cells(j10, i1).Value
Next i1
Return

'   Check identical numbers

300 fl1 = 1
For i1 = 1 To 64
a2 = a(i1)
For i2 = (1 + i1) To 64
If a2 = a(i2) Then fl1 = 0: Return
Next i2
Next i1
Return

'   Print results (selected numbers)

740 Cells(n9, 64).Select
For i1 = 1 To 64
Cells(n9, i1).Value = a(i1)
Next i1
Cells(n9, 65).Value = j1
Cells(n9, 66).Value = j2
Return

'   Print results (squares)

750 n2 = n2 + 1
If n2 = 5 Then
n2 = 1: k1 = k1 + 9: k2 = 1
Else
If n9 > 1 Then k2 = k2 + 9
End If

Cells(k1, k2 + 1).Select
Cells(k1, k2 + 1).Font.Color = -4165632
Cells(k1, k2 + 1).Value = n9

i3 = 0
For i1 = 1 To 8
For i2 = 1 To 8
i3 = i3 + 1
Cells(k1 + i1, k2 + i2).Value = a(i3)
Next i2
Next i1

Return

End Sub

```