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' Generates (Pan) Magic Squares of order 7 based on Sudoku Comparable Squares

' Tested with Office 2007 under Windows 7

Sub CnstrSqrs7a()

Dim a(49), b(2, 49)

    n2 = 0: n9 = 0: k1 = 1: k2 = 1
    s1 = 175

'   Options

'   1. A1: shift 2 columns to the left / A3: shift 2 columns to the right
'   2. A1: shift 2 columns to the left / A4: shift 3 columns to the right
'   3. A1: shift 2 columns to the left / A2: shift 3 columns to the left
'   4. A2: shift 3 columns to the left / A3: shift 2 columns to the right
'   5. A2: shift 3 columns to the left / A4: shift 3 columns to the right
'   6. A2: shift 3 columns to the left / A1: shift 2 columns to the left

'   Select Option

    Sht1 = "Sudoku71" : Sht2 = "Sudoku73"
'   Sht1 = "Sudoku71" : Sht2 = "Sudoku74"
'   Sht1 = "Sudoku71" : Sht2 = "Sudoku72"
'   Sht1 = "Sudoku72" : Sht2 = "Sudoku73"
'   Sht1 = "Sudoku72" : Sht2 = "Sudoku74"
'   Sht1 = "Sudoku72" : Sht2 = "Sudoku71"

    Sheets("Klad1").Select
    
y = MsgBox("Locked", vbCritical, "Routine CnstrCbs7a")
End
    
    n4 = 720

    For j1 = 1 To n4
    For j2 = 1 To n4
        
        j10 = j1: j20 = 1: Sht = Sht1: GoSub 100              'Read Sudoku Comparable Square 1
        j10 = j2: j20 = 2: Sht = Sht2: GoSub 100              'Read Sudoku Comparable Square 2

        For j4 = 1 To 49
            a(j4) = b(1, j4) + 7 * b(2, j4) + 1
        Next j4
        
'       GoSub 200: If fl1 = 0 Then GoTo 20                    'Check Additional Properties (Optional)
        GoSub 300: If fl1 = 0 Then GoTo 20                    'Check identical numbers

'********************** Only Counting **************************
       
'        Cells(2, 1).Value = j1
'        Cells(2, 2).Value = j2
 
'        Cells(2, 4).Select: Cells(2, 4).Value = Cells(2, 4).Value + 1
       
'***************************************************************
                           
        n9 = n9 + 1: GoSub 600 'Print results (squares)

20  Next j2
    Next j1
    
    t2 = Timer
    
    t10 = Str(t2 - t1) + " sec., " + Str(n9) + " Solutions for sum" + Str(s1)
    y = MsgBox(t10, 0, "Routine CnstrSqrs7a")

End

'   Read Sudoku Comparable Cubes (line format)

100
    For i1 = 1 To 49
        b(j20, i1) = Sheets(Sht).Cells(j10, i1).Value
    Next i1
    Return
    
'   Check identical numbers
    
300 fl1 = 1
    For i1 = 1 To 49
       a2 = a(i1)
       For i2 = (1 + i1) To 49
           If a2 = a(i2) Then fl1 = 0: Return
       Next i2
    Next i1
    Return

'   Print results (selected numbers)

500 For i1 = 1 To 49
        Cells(n9, i1).Value = a(i1)
    Next i1
    Return

'   Print results (squares)

600 n2 = n2 + 1
    If n2 = 5 Then
        n2 = 1: k1 = k1 + 8: k2 = 1
    Else
        If n9 > 1 Then k2 = k2 + 8
    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 7
        For i2 = 1 To 7
            i3 = i3 + 1
            Cells(k1 + i1, k2 + i2).Value = a(i3)
        Next i2
    Next i1
    
    Return

End Sub

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