' Generates Pan Magic Squares (6 x 6)
' Row Symmetric (Type 2)

' Tested with Office 2007 under Windows 7

```Sub MgcSqr6124()

Dim a1(81), a(36), b1(81), b(81), c(36)

y = MsgBox("Locked", vbCritical, "Routine MgcSqr6124")
End

n2 = 0: n3 = 0: n9 = 0: n10 = 0: k1 = 1: k2 = 1

t1 = Timer

For j101 = 120 To 120

'   Define variables

s1 = j101         'MC6
nVar1 = 36

a1(1) = 1:   a1(2) = 2:   a1(3) = 3:   a1(4) = 4:   a1(5) = 5:   a1(6) = 6:
a1(7) = 7:   a1(8) = 8:   a1(9) = 9:   a1(10) = 10: a1(11) = 11: a1(12) = 12:
a1(13) = 13: a1(14) = 15: a1(15) = 16: a1(16) = 17: a1(17) = 18: a1(18) = 19:
a1(19) = 21: a1(20) = 22: a1(21) = 23: a1(22) = 24: a1(23) = 25: a1(24) = 27:
a1(25) = 28: a1(26) = 29: a1(27) = 30: a1(28) = 31: a1(29) = 32: a1(30) = 33:
a1(31) = 34: a1(32) = 35: a1(33) = 36: a1(34) = 37: a1(35) = 38: a1(36) = 39:

'   For i1 = 1 To nVar1: a1(i1) = i1: Next i1

m1 = 1: m2 = nVar1

Erase b1

For i1 = m1 To m2: b1(a1(i1)) = a1(i1): Next i1

'   Generate Squares

For j36 = m1 To m2                                                'a(36)
If b(a1(j36)) = 0 Then b(a1(j36)) = a1(j36): c(36) = a1(j36) Else GoTo 360
a(36) = a1(j36)

a(18) = s1 / 3 - a(36): If b(a(18)) = 0 Then b(a(18)) = a(18): c(18) = a(18) Else GoTo 180

For j35 = m1 To m2                                                'a(35)
If b(a1(j35)) = 0 Then b(a1(j35)) = a1(j35): c(35) = a1(j35) Else GoTo 350
a(35) = a1(j35)

a(17) = s1 / 3 - a(35): If b(a(17)) = 0 Then b(a(17)) = a(17): c(17) = a(17) Else GoTo 170

For j34 = m1 To m2                                                'a(34)
If b(a1(j34)) = 0 Then b(a1(j34)) = a1(j34): c(34) = a1(j34) Else GoTo 340
a(34) = a1(j34)

a(16) = s1 / 3 - a(34): If b(a(16)) = 0 Then b(a(16)) = a(16): c(16) = a(16) Else GoTo 160

For j33 = m1 To m2                                                'a(33)
If b(a1(j33)) = 0 Then b(a1(j33)) = a1(j33): c(33) = a1(j33) Else GoTo 330
a(33) = a1(j33)

a(15) = s1 / 3 - a(33): If b(a(15)) = 0 Then b(a(15)) = a(15): c(15) = a(15) Else GoTo 150

For j32 = m1 To m2                                                'a(32)
If b(a1(j32)) = 0 Then b(a1(j32)) = a1(j32): c(32) = a1(j32) Else GoTo 320
a(32) = a1(j32)

a(31) = s1 - a(32) - a(33) - a(34) - a(35) - a(36)
If a(31) < a1(m1) Or a(31) > a1(m2) Then GoTo 310
If b1(a(31)) = 0 Then GoTo 310
If b(a(31)) = 0 Then b(a(31)) = a(31): c(31) = a(31) Else GoTo 310

a(14) = s1 / 3 - a(32): If b(a(14)) = 0 Then b(a(14)) = a(14): c(14) = a(14) Else GoTo 140
a(13) = s1 / 3 - a(31): If b(a(13)) = 0 Then b(a(13)) = a(13): c(13) = a(13) Else GoTo 130

For j30 = m1 To m2                                                'a(30)
If b(a1(j30)) = 0 Then b(a1(j30)) = a1(j30): c(30) = a1(j30) Else GoTo 300
a(30) = a1(j30)

a(12) = s1 / 3 - a(30): If b(a(12)) = 0 Then b(a(12)) = a(12): c(12) = a(12) Else GoTo 120

For j29 = m1 To m2                                                'a(29)
If b(a1(j29)) = 0 Then b(a1(j29)) = a1(j29): c(29) = a1(j29) Else GoTo 290
a(29) = a1(j29)

a(11) = s1 / 3 - a(29): If b(a(11)) = 0 Then b(a(11)) = a(11): c(11) = a(11) Else GoTo 110

For j28 = m1 To m2                                                'a(28)
If b(a1(j28)) = 0 Then b(a1(j28)) = a1(j28): c(28) = a1(j28) Else GoTo 280
a(28) = a1(j28)

a(27) = 2 * s1 - 2 * a(28) - 2 * a(29) - a(30) - a(33) - 2 * a(34) - 2 * a(35) - a(36)
If a(27) < a1(m1) Or a(27) > a1(m2) Then GoTo 270
If b1(a(27)) = 0 Then GoTo 270
If b(a(27)) = 0 Then b(a(27)) = a(27): c(27) = a(27) Else GoTo 270

a(26) = -2 * s1 + 2 * a(28) + 3 * a(29) + 2 * a(30) - a(32) + 2 * a(34) + 3 * a(35) + 2 * a(36)
If a(26) < a1(m1) Or a(26) > a1(m2) Then GoTo 260
If b1(a(26)) = 0 Then GoTo 260
If b(a(26)) = 0 Then b(a(26)) = a(26): c(26) = a(26) Else GoTo 260

a(25) = s1 - a(28) - 2 * a(29) - 2 * a(30) + a(32) + a(33) - a(35) - a(36)
If a(25) < a1(m1) Or a(25) > a1(m2) Then GoTo 250
If b1(a(25)) = 0 Then GoTo 250
If b(a(25)) = 0 Then b(a(25)) = a(25): c(25) = a(25) Else GoTo 250

a(10) = s1 / 3 - a(28): If b(a(10)) = 0 Then b(a(10)) = a(10): c(10) = a(10) Else GoTo 100
a(9) = s1 / 3 - a(27): If b(a(9)) = 0 Then b(a(9)) = a(9): c(9) = a(9) Else GoTo 90
a(8) = s1 / 3 - a(26): If b(a(8)) = 0 Then b(a(8)) = a(8): c(8) = a(8) Else GoTo 80
a(7) = s1 / 3 - a(25): If b(a(7)) = 0 Then b(a(7)) = a(7): c(7) = a(7) Else GoTo 70

For j24 = m1 To m2                                                'a(24)
If b(a1(j24)) = 0 Then b(a1(j24)) = a1(j24): c(24) = a1(j24) Else GoTo 240
a(24) = a1(j24)

a(21) = s1 + a(24) - 2 * a(28) - 2 * a(29) - 2 * a(30) + 2 * a(32) + a(33) - 2 * a(35) - a(36)
If a(21) < a1(m1) Or a(21) > a1(m2) Then GoTo 210
If b1(a(21)) = 0 Then GoTo 210
If b(a(21)) = 0 Then b(a(21)) = a(21): c(21) = a(21) Else GoTo 210

a(6) = s1 / 3 - a(24): If b(a(6)) = 0 Then b(a(6)) = a(6): c(6) = a(6) Else GoTo 60
a(3) = s1 / 3 - a(21): If b(a(3)) = 0 Then b(a(3)) = a(3): c(3) = a(3) Else GoTo 30

For j23 = m1 To m2                                                'a(23)
If b(a1(j23)) = 0 Then b(a1(j23)) = a1(j23): c(23) = a1(j23) Else GoTo 230
a(23) = a1(j23)

a(22) = -s1 / 2 - a(23) - a(24) + a(28) + a(29) + a(30) - a(32) + a(34) + 2 * a(35) + a(36)
If a(22) < a1(m1) Or a(22) > a1(m2) Then GoTo 220
If b1(a(22)) = 0 Then GoTo 220
If b(a(22)) = 0 Then b(a(22)) = a(22): c(22) = a(22) Else GoTo 220

a(20) = -s1 + a(23) + 2 * a(28) + 2 * a(29) + 2 * a(30) - a(32) + a(35)
If a(20) < a1(m1) Or a(20) > a1(m2) Then GoTo 200
If b1(a(20)) = 0 Then GoTo 200
If b(a(20)) = 0 Then b(a(20)) = a(20): c(20) = a(20) Else GoTo 200

a(19) = 3 * s1 / 2 - a(23) - a(24) - a(28) - a(29) - a(30) - a(33) - a(34) - a(35)
If a(19) < a1(m1) Or a(19) > a1(m2) Then GoTo 190
If b1(a(19)) = 0 Then GoTo 190
If b(a(19)) = 0 Then b(a(19)) = a(19): c(19) = a(19) Else GoTo 190

a(5) = s1 / 3 - a(23): If b(a(5)) = 0 Then b(a(5)) = a(5): c(5) = a(5) Else GoTo 50
a(4) = s1 / 3 - a(22): If b(a(4)) = 0 Then b(a(4)) = a(4): c(4) = a(4) Else GoTo 40
a(2) = s1 / 3 - a(20): If b(a(2)) = 0 Then b(a(2)) = a(2): c(2) = a(2) Else GoTo 20
a(1) = s1 / 3 - a(19): If b(a(1)) = 0 Then b(a(1)) = a(1): c(1) = a(1) Else GoTo 10

n9 = n9 + 1

GoSub 2650 'Print results (squares)
'                          GoSub 2645 'Print results (selected numbers)
Erase b, c: GoTo 500    'Print only first square

5

b(c(1)) = 0: c(1) = 0
10  b(c(2)) = 0: c(2) = 0
20  b(c(4)) = 0: c(4) = 0
40  b(c(5)) = 0: c(5) = 0
50  b(c(19)) = 0: c(19) = 0
190 b(c(20)) = 0: c(20) = 0
200 b(c(22)) = 0: c(22) = 0
220 b(c(23)) = 0: c(23) = 0
230 Next j23

b(c(3)) = 0: c(3) = 0
30  b(c(6)) = 0: c(6) = 0
60  b(c(21)) = 0: c(21) = 0
210 b(c(24)) = 0: c(24) = 0
240 Next j24

b(c(7)) = 0: c(7) = 0
70  b(c(8)) = 0: c(8) = 0
80  b(c(9)) = 0: c(9) = 0
90  b(c(10)) = 0: c(10) = 0
100 b(c(25)) = 0: c(25) = 0
250 b(c(26)) = 0: c(26) = 0
260 b(c(27)) = 0: c(27) = 0
270 b(c(28)) = 0: c(28) = 0
280 Next j28

b(c(11)) = 0: c(11) = 0
110 b(c(29)) = 0: c(29) = 0
290 Next j29

b(c(12)) = 0: c(12) = 0
120 b(c(30)) = 0: c(30) = 0
300 Next j30

b(c(13)) = 0: c(13) = 0
130 b(c(14)) = 0: c(14) = 0
140 b(c(31)) = 0: c(31) = 0
310 b(c(32)) = 0: c(32) = 0
320 Next j32

b(c(15)) = 0: c(15) = 0
150 b(c(33)) = 0: c(33) = 0
330 Next j33

b(c(16)) = 0: c(16) = 0
160 b(c(34)) = 0: c(34) = 0
340 Next j34

b(c(17)) = 0: c(17) = 0
170 b(c(35)) = 0: c(35) = 0
350 Next j35

b(c(18)) = 0: c(18) = 0
180 b(c(36)) = 0: c(36) = 0
360 Next j36

500 Next j101

t2 = Timer

t10 = Str(t2 - t1) + " sec., " + Str(n9) + " Solutions for sum" + Str(s1)
y = MsgBox(t10, 0, "Routine MgcSqr6124")

End

'    Print results (selected numbers)

2645 For i1 = 1 To 36
Cells(n9, i1).Value = a(i1)
Next i1

Return

'    Print results (squares)

2650 n2 = n2 + 1
If n2 = 5 Then
n2 = 1: k1 = k1 + 7: k2 = 1
Else
If n9 > 1 Then k2 = k2 + 7
End If

Cells(k1, k2 + 1).Select
Cells(k1, k2 + 1).Font.Color = -4165632
Cells(k1, k2 + 1).Value = n9 ''CStr(s1)

i3 = 0
For i1 = 1 To 6
For i2 = 1 To 6
i3 = i3 + 1
Cells(k1 + i1, k2 + i2).Value = a(i3)
Next i2
Next i1

Return

End Sub
```