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' Generates Lozenge Squares of order 5, Square / Diamond Inlay

' Tested with Office 2007 under Windows 7

Sub MgcSqr5g4()

Dim a(25), b(25), c(25), s5(10)

y = MsgBox("Locked", vbCritical, "Routine MgcSqr5g4")
End

n2 = 0: n3 = 0: n9 = 0: k1 = 1: k2 = 1
m1 = 1: m2 = 25: s1 = 65

'   Generate data
    
    Sheets("Klad1").Select
    
    t1 = Timer

    a(13) = 0.2 * s1: b(a(13)) = a(13)

    For j25 = m1 + 1 To m2 - 1 Step 2                                      'a(25) even
    If b(j25) = 0 Then b(j25) = j25: c(25) = j25 Else GoTo 250
    a(25) = j25

    For j24 = m1 + 1 To m2 - 1 Step 2                                      'a(24) even
    If b(j24) = 0 Then b(j24) = j24: c(24) = j24 Else GoTo 240
    a(24) = j24
   
    a(22) = 0.4 * s1 - a(24)
    If a(22) < m1 Or a(22) > m2 Then GoTo 220
    If b(a(22)) = 0 Then b(a(22)) = a(22): c(22) = a(22) Else GoTo 220
    
    For j23 = m1 To m2 Step 2                                              'a(23) odd
    If b(j23) = 0 Then b(j23) = j23: c(23) = j23 Else GoTo 230
    a(23) = j23

    a(21) = s1 - a(22) - a(23) - a(24) - a(25)
    If CInt(a(21) / 2) <> a(21) / 2 Then GoTo 210                          'a(21) even
    If a(21) < m1 Or a(21) > m2 Then GoTo 210
    If b(a(21)) = 0 Then b(a(21)) = a(21): c(21) = a(21) Else GoTo 210

    a(15) = -0.4 * s1 + 2 * a(21) + a(23)
    If CInt(a(15) / 2) = a(15) / 2 Then GoTo 150                           'a(15) odd
    If a(15) < m1 Or a(15) > m2 Then GoTo 150
    If b(a(15)) = 0 Then b(a(15)) = a(15): c(15) = a(15) Else GoTo 150

    a(11) = a(13) - a(21) + a(25)
    If CInt(a(11) / 2) = a(11) / 2 Then GoTo 110                           'a(11) odd
    If a(11) < m1 Or a(11) > m2 Then GoTo 110
    If b(a(11)) = 0 Then b(a(11)) = a(11): c(11) = a(11) Else GoTo 110

    For j20 = m1 + 1 To m2 - 1 Step 2                                      'a(20) even
    If b(j20) = 0 Then b(j20) = j20: c(20) = j20 Else GoTo 200
    a(20) = j20

    a(10) = 0.4 * s1 - a(20)
    If a(10) < m1 Or a(10) > m2 Then GoTo 100
    If b(a(10)) = 0 Then b(a(10)) = a(10): c(10) = a(10) Else GoTo 100

    a(5) = s1 - a(10) - a(15) - a(20) - a(25)
    If CInt(a(5) / 2) <> a(5) / 2 Then GoTo 50                             'a(5) even
    If a(5) < m1 Or a(5) > m2 Then GoTo 50
    If b(a(5)) = 0 Then b(a(5)) = a(5): c(5) = a(5) Else GoTo 50

    For j19 = m1 To m2 Step 2                                              'a(19) odd
    If b(j19) = 0 Then b(j19) = j19: c(19) = j19 Else GoTo 190
    a(19) = j19

    a(7) = 0.4 * s1 - a(19)
    If a(7) < m1 Or a(7) > m2 Then GoTo 70
    If b(a(7)) = 0 Then b(a(7)) = a(7): c(7) = a(7) Else GoTo 70

    For j18 = m1 To m2 Step 2                                              'a(18) odd
    If b(j18) = 0 Then b(j18) = j18: c(18) = j18 Else GoTo 180
    a(18) = j18

    a(8) = 0.4 * s1 - a(18)
    If a(8) < m1 Or a(8) > m2 Then GoTo 80
    If b(a(8)) = 0 Then b(a(8)) = a(8): c(8) = a(8) Else GoTo 80

    a(3) = s1 - a(8) - a(13) - a(18) - a(23)
    If CInt(a(3) / 2) = a(3) / 2 Then GoTo 30                              'a(3) odd
    If a(3) < m1 Or a(3) > m2 Then GoTo 30
    If b(a(3)) = 0 Then b(a(3)) = a(3): c(3) = a(3) Else GoTo 30

    For j17 = m1 To m2 Step 2                                              'a(17) odd
    If b(j17) = 0 Then b(j17) = j17: c(17) = j17 Else GoTo 170
    a(17) = j17

    a(16) = s1 - a(17) - a(18) - a(19) - a(20)
    If CInt(a(16) / 2) <> a(16) / 2 Then GoTo 160                          'a(16) even
    If a(16) < m1 Or a(16) > m2 Then GoTo 160
    If b(a(16)) = 0 Then b(a(16)) = a(16): c(16) = a(16) Else GoTo 160

    a(9) = 0.4 * s1 - a(17)
    If a(9) < m1 Or a(9) > m2 Then GoTo 90
    If b(a(9)) = 0 Then b(a(9)) = a(9): c(9) = a(9) Else GoTo 90

    a(6) = 0.4 * s1 - a(16)
    If a(6) < m1 Or a(6) > m2 Then GoTo 60
    If b(a(6)) = 0 Then b(a(6)) = a(6): c(6) = a(6) Else GoTo 60

    a(1) = s1 - a(6) - a(11) - a(16) - a(21)
    If CInt(a(1) / 2) <> a(1) / 2 Then GoTo 10                             'a(1) even
    If a(1) < m1 Or a(1) > m2 Then GoTo 10
    If b(a(1)) = 0 Then b(a(1)) = a(1): c(1) = a(1) Else GoTo 10

    For j14 = m1 To m2 Step 2                                              'a(14) odd
    If b(j14) = 0 Then b(j14) = j14: c(14) = j14 Else GoTo 140
    a(14) = j14

    a(12) = 0.4 * s1 - a(14)
    If a(12) < m1 Or a(12) > m2 Then GoTo 120
    If b(a(12)) = 0 Then b(a(12)) = a(12): c(12) = a(12) Else GoTo 120

    a(4) = s1 - a(9) - a(14) - a(19) - a(24)
    If CInt(a(4) / 2) <> a(4) / 2 Then GoTo 40                             'a(4) even
    If a(4) < m1 Or a(4) > m2 Then GoTo 40
    If b(a(4)) = 0 Then b(a(4)) = a(4): c(4) = a(4) Else GoTo 40

    a(2) = s1 - a(7) - a(12) - a(17) - a(22)
    If CInt(a(2) / 2) <> a(2) / 2 Then GoTo 20                             'a(2) even
    If a(2) < m1 Or a(2) > m2 Then GoTo 20
    If b(a(2)) = 0 Then b(a(2)) = a(2): c(2) = a(2) Else GoTo 20

'       Check Diamond Inlay (Optional)
        GoSub 850: If fl1 = 0 Then GoTo 260

        n9 = n9 + 1
        GoSub 650 'Print results (squares)
'       GoSub 640 'Print results (selected numbers)

260 b(c(2)) = 0: c(2) = 0
20  b(c(4)) = 0: c(4) = 0
40  b(c(12)) = 0: c(12) = 0
120 b(c(14)) = 0: c(14) = 0
140 Next j14

    b(c(1)) = 0: c(1) = 0
10  b(c(6)) = 0: c(6) = 0
60  b(c(9)) = 0: c(9) = 0
90  b(c(16)) = 0: c(16) = 0
160 b(c(17)) = 0: c(17) = 0
170 Next j17

    b(c(3)) = 0: c(3) = 0
30  b(c(8)) = 0: c(8) = 0
80  b(c(18)) = 0: c(18) = 0
180 Next j18

    b(c(7)) = 0: c(7) = 0
70  b(c(19)) = 0: c(19) = 0
190 Next j19
  
    b(c(5)) = 0: c(5) = 0
50  b(c(10)) = 0: c(10) = 0
100 b(c(20)) = 0: c(20) = 0
200 Next j20

    b(c(11)) = 0: c(11) = 0
110 b(c(15)) = 0: c(15) = 0
150 b(c(21)) = 0: c(21) = 0
210 b(c(23)) = 0: c(23) = 0
230 Next j23
  
    b(c(22)) = 0: c(22) = 0
220 b(c(24)) = 0: c(24) = 0
240 Next j24

    b(c(25)) = 0: c(25) = 0
250 Next j25

    t2 = Timer
    
    t10 = Str(t2 - t1) + " sec., " + Str(n9) + " Solutions for sum" + Str(s1)
    y = MsgBox(t10, 0, "Routine MgcSqr5g4")

End

'   Print results (selected numbers)

640 For i1 = 1 To 25
        Cells(n9, i1).Value = a(i1)
    Next i1
    Cells(n9, 26).Value = n9
    Cells(n9, 26).Select
    Return

'   Print results (squares)

650 n2 = n2 + 1
    If n2 = 5 Then
        n2 = 1: k1 = k1 + 6: k2 = 1
    Else
        If n9 > 1 Then k2 = k2 + 6
    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 5
        For i2 = 1 To 5
            i3 = i3 + 1
            Cells(k1 + i1, k2 + i2).Value = a(i3)
        Next i2
    Next i1

    Return

'   Check Diamond Inlay (Optional)

850 fl1 = 1
    s5(1) = a(3) + a(7) + a(11)
    s5(2) = a(9) + a(13) + a(17)
    s5(3) = a(15) + a(19) + a(23)
    s5(4) = a(3) + a(9) + a(15)
    s5(5) = a(7) + a(13) + a(19)
    s5(6) = a(11) + a(17) + a(23)
    s5(7) = a(3) + a(13) + a(23)
    s5(8) = a(11) + a(13) + a(15)
    For i1 = 1 To 8
        If s5(i1) <> 39 Then fl1 = 0: Return
    Next i1
    Return
End Sub

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