Const $SIZE = 9, $REGION = Sqrt($SIZE)
Const $LENGTH = $SIZE * $SIZE

Global $aGrid[$SIZE][$SIZE]
Global $aFinalGrid, $SolutionFound = False

Global $Nx=" 5   7    6  1 5    98    6     6   34  8 3  17   2   6 6    28     19  5    8  79"
Global $N=StringSplit($Nx,"",2)
Global $aart[9][9]

local $pointera=0
local $pointerb=0
   for $pointera= 1 to 9
	  for $pointerb= 1 to 9
          if " "<>$N[($pointera-1)*9+$pointerb] Then $aart[$pointera-1][$pointerb-1]=$N[($pointera-1)*9+$pointerb]
	  next
   next
for $pointera= 1 to 9
		 for $pointerb= 1 to 9
			ConsoleWrite($aart[$pointerb-1][$pointera-1]&" ")
		 next
		 ConsoleWrite(@CRLF)
	  next

Solution($aart, 1)
for $pointera= 1 to 9
		 for $pointerb= 1 to 9
			ConsoleWrite($aFinalGrid[$pointerb-1][$pointera-1]&" ")
		 next
		 ConsoleWrite(@CRLF)
	  next


Func Solution($aTemp, $iLoc)

    ;_ArrayDisplay($aTemp)
    If $SolutionFound Then Return
  If $iLoc > $LENGTH Then
    $SolutionFound = True
    $aFinalGrid = $aTemp
    Return
  EndIf
  Local $iLine = Int(($iLoc - 1) / $SIZE)
  Local $iCol = Mod($iLoc - 1, $SIZE)

  If $aTemp[$iLine][$iCol] Then
    Solution($aTemp, $iLoc + 1)
  Else
    For $i = 1 To $SIZE
      If Possible($aTemp, $iLine, $iCol, $i) Then
        $aTemp[$iLine][$iCol] = $i
        Solution($aTemp, $iLoc + 1)
      EndIf
    Next
  EndIf

EndFunc   ;==>Solution

Func Possible(ByRef $aGrid, $iLine, $iCol, $iValue)
  For $i = 0 To $SIZE - 1
    If $aGrid[$iLine][$i] = $iValue Then Return False
    If $aGrid[$i][$iCol] = $iValue Then Return False
  Next
  Local $iRegLine = Int($iLine / $REGION) * $REGION
  Local $iRegCol = Int($iCol / $REGION) * $REGION
  For $line = $iRegLine To $iRegLine + $REGION - 1
    For $col = $iRegCol To $iRegCol + $REGION - 1
      If $aGrid[$line][$col] = $iValue Then Return False
    Next
  Next
  Return True
EndFunc   ;==>Possible