diff --git a/checkMatrix.c b/checkMatrix.c
deleted file mode 100644
index 15c74a9..0000000
--- a/checkMatrix.c
+++ /dev/null
@@ -1,67 +0,0 @@
-#include "myMatrix.h"
-
-int checkMatrix(int matrixArr[9][9], int isPrintInfo){
-  int rowCnt[9][10]={0};
-  int colCnt[9][10]={0};
-  int bloCnt[9][10]={0};
-  for(int i=0;i<9;i++){
-    for(int j=0;j<9;j++){
-      if(matrixArr[i][j]!=0){
-        rowCnt[i][matrixArr[i][j]]++;
-        if(rowCnt[i][matrixArr[i][j]]>1){
-          if(isPrintInfo){
-            printf("\nFalse:Invalid initial Sudoku matrix!");
-            printf("\nThe number %d in the row %d has been used!",matrixArr[i][j],i+1);
-          }
-          return 0;
-        }
-        colCnt[j][matrixArr[i][j]]++;
-        if(colCnt[j][matrixArr[i][j]]>1){
-          if(isPrintInfo){
-            printf("\nFalse:Invalid initial Sudoku matrix!");
-            printf("\nThe number %d in the col %d has been used!",matrixArr[i][j],j+1);
-          }
-          return 0;
-        }
-        bloCnt[i/3*3+j/3][matrixArr[i][j]]++;
-        if(bloCnt[i/3*3+j/3][matrixArr[i][j]]>1){
-          if(isPrintInfo){
-            printf("\nFalse:Invalid initial Sudoku matrix!");
-            printf("\nThe number %d in the block %d has been used!",matrixArr[i][j],i/3*3+j/3+1);
-          }
-          return 0;
-        }
-      }
-    }
-  }
-  if(isPrintInfo){
-    printf("\nTrue:Valid initial Sudoku matrix!");
-  }
-  return 1;
-}
-
-// 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}};
-
-//   printf("The original Sudoku matrix: \n");
-//   matrixOutput(board1);
-//   checkMatrix(board1,1);
-//   return 0;
-// }
\ No newline at end of file