Sudoku Solver

PuzzlePlayer/Sudoku.cs

@@ -14,7 +14,7 @@ namespace PuzzlePlayer_Namespace
     {
         private static int boardLength;
         private static int rootBoardLength;
-        public Sudoku(int boardSize = 16)
+        public Sudoku(int boardSize = 9)
         {
             boardState = GetClearBoard(boardSize, boardSize);
             lastGeneratedBoard = GetClearBoard(boardSize, boardSize);
@@ -75,6 +75,15 @@ namespace PuzzlePlayer_Namespace
             }
 
             FillSudoku(0, rootBoardLength);
+
+            RemoveSpaces(54);
+        }
+
+        public override SOLUTIONS Solve(bool j)
+        {
+            FillSudoku(0, rootBoardLength);
+
+            return SOLUTIONS.UNIQUE;
         }
 
         private int RandomNumber(int number)
@@ -169,8 +178,9 @@ namespace PuzzlePlayer_Namespace
                     boardState[row, col] = num;
 
                     if (FillSudoku(row, col + 1))
+                    {
                         return true;
-
+                    }
                     boardState[row, col] = -1;
                 }
             }
@@ -219,7 +229,7 @@ namespace PuzzlePlayer_Namespace
         {
             if (p == null) return;
             int num = (int)k - 48;
-            if (num >= 1 && num <= 9) boardState[((Point)p).X, ((Point)p).Y] = num;
+            if (num >= 1 && num <= boardLength) boardState[((Point)p).X, ((Point)p).Y] = num;
 
         }
         public override void TileClick(Point p, int x)
@@ -242,11 +252,11 @@ namespace PuzzlePlayer_Namespace
                 }
                 else
                 {
-                    boardState[p.X, p.Y] = 9;
+                    boardState[p.X, p.Y] = boardLength;
                     return;
                 }
             }
-            else if (boardState[p.X, p.Y] == 9)
+            else if (boardState[p.X, p.Y] == boardLength)
             {
                 if (x == 1)
                 {
@@ -279,6 +289,17 @@ namespace PuzzlePlayer_Namespace
             }
         }
 
+        private void RemoveSpaces(int k)
+        {
+            for(int i = 0; i < k; i++)
+            {
+                int row = RandomNumber(boardLength) - 1;
+                int col = RandomNumber(boardLength) - 1;
+
+                boardState[row, col] = emptySpace;
+            }
+        }
+
         protected override List<Move> GetSolveList(int[,] boardToSolve)
         {
             List<Move> result = new List<Move>();