diff --git a/1.3（yi） b/1.3（yi）
new file mode 100644
index 0000000..e7b993b
--- /dev/null
+++ b/1.3（yi）
@@ -0,0 +1,67 @@
+#include<stdio.h>
+#include<stdlib.h>
+int arr[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}};
+void Print();
+void Judge();
+int main()
+{
+    Print();
+    Judge();
+    return 0;
+}
+
+void Print(){
+	printf("The original Sudoku matrix: \n");
+	for(int i=0;i<9;i++){
+		for(int j=0;j<9;j++){
+			printf("%d ",arr[i][j]);
+		}
+		printf("\n");	
+	}
+}
+
+void Judge(){
+    for(int i=0;i<9;i++){
+        for(int j=0;j<9;j++){
+            if(arr[i][j]){
+                int x=i+1,y=j+1;
+                for(y;y<9;y++){
+                    if(arr[i][j]==arr[i][y]){
+                        printf("False:Invalid initial Sudoku matrix!\n");
+                        printf("The number %d in the col %d has been used!",arr[i][j],y+1);
+                        return;
+                    }
+                }
+                for(x;x<9;x++){
+                        if(arr[i][j]==arr[x][j]){
+                        printf("False:Invalid initial Sudoku matrix!\n");
+                        printf("The number %d in the row %d has been used!",arr[i][j],x+1);
+                        return;
+                    }   
+                }
+                int a=i/3*3,b=j/3*3;
+                int m=a*3+b/3+1;
+                for(int k=0;k<=2;k++){
+                    for(int l=0;l<=2;l++){
+                        if(arr[a][b]==arr[i][j]&&a!=i&&b!=j){
+                            printf("False:Invalid initial Sudoku matrix!\n");
+                            printf("The number %d in the block %d has been used!",arr[i][j],m);
+                            return;
+                        }
+                        b++;
+                    }
+                    a++;
+                    b=j/3*3;
+                }
+            }
+        }
+    }
+}
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