diff --git a/fillMatrix.c b/fillMatrix.c
deleted file mode 100644
index 4083d21..0000000
--- a/fillMatrix.c
+++ /dev/null
@@ -1,75 +0,0 @@
-#include "myMatrix.h"
-
-int fillMatrix(int matrixArr[9][9], int row, int col){
-  if(row==9){
-    return 1;
-  }
-  if(col==9){
-    return fillMatrix(matrixArr,row+1,0);
-  }
-  if(matrixArr[row][col]!=0){
-    return fillMatrix(matrixArr, row, col+1);
-  }
-  for(int i=1;i<=9;i++){
-    matrixArr[row][col]=i;
-    if(checkMatrix(matrixArr,0)){
-      if(fillMatrix(matrixArr,row,col+1)){
-        return 1;
-      }
-      matrixArr[row][col]=0;
-    }else{
-      matrixArr[row][col]=0;
-    }
-  }
-  return 0;
-}
-
-int main()
-{
-  int board0[9][9] = {{5, 3, 0, 0, 7, 0, 0, 0, 0},
-                      {6, 0, 0, 1, 9, 5, 0, 0, 0},
-                      {0, 9, 8, 0, 0, 0, 0, 6, 0},
-                      {8, 0, 0, 0, 6, 0, 0, 0, 3},
-                      {4, 0, 0, 8, 0, 3, 0, 0, 1},
-                      {7, 0, 0, 0, 2, 0, 0, 0, 6},
-                      {0, 6, 0, 0, 0, 0, 2, 8, 0},
-                      {0, 0, 0, 4, 1, 9, 0, 0, 5},
-                      {0, 0, 0, 0, 8, 0, 0, 7, 9}};
-  int board1[9][9] = {{8, 3, 0, 0, 7, 0, 0, 0, 0},
-                      {6, 0, 0, 1, 9, 5, 0, 0, 0},
-                      {0, 9, 8, 0, 0, 0, 0, 6, 0},
-                      {8, 0, 0, 0, 6, 0, 0, 0, 3},
-                      {4, 0, 0, 8, 0, 3, 0, 0, 1},
-                      {7, 0, 0, 0, 2, 0, 0, 0, 6},
-                      {0, 6, 0, 0, 0, 0, 2, 8, 0},
-                      {0, 0, 0, 4, 1, 9, 0, 0, 5},
-                      {0, 0, 0, 0, 8, 0, 0, 7, 9}};
-  int board2[9][9] = {{5, 2, 0, 0, 7, 0, 0, 0, 0},
-                      {6, 0, 0, 1, 9, 5, 0, 0, 0},
-                      {0, 9, 8, 0, 0, 0, 0, 6, 0},
-                      {8, 0, 0, 0, 6, 0, 0, 0, 3},
-                      {4, 0, 0, 8, 0, 3, 0, 0, 1},
-                      {7, 0, 0, 0, 2, 0, 0, 0, 6},
-                      {0, 6, 0, 0, 0, 0, 2, 8, 0},
-                      {0, 0, 0, 4, 1, 9, 0, 0, 5},
-                      {0, 0, 0, 0, 8, 0, 0, 7, 9}};
-  printf("The original Sudoku matrix: \n");
-  matrixOutput(board0);
-  if (checkMatrix(board0, 1))
-  {
-    if (fillMatrix(board0, 0, 0))
-    {
-      printf("\nThe solution of Sudoku matrix:\n");
-      matrixOutput(board0);
-    }
-    else
-    {
-      printf("\nNo solution!");
-    }
-  }
-  else
-  {
-    printf("\nNo solution!");
-  }
-  return 0;
-}
\ No newline at end of file