diff --git a/geshi.c b/geshi.c
new file mode 100644
index 0000000..88e7df7
--- /dev/null
+++ b/geshi.c
@@ -0,0 +1,34 @@
+#include <stdio.h>
+
+void print_sudoku(char sudoku[9][9]) {
+    for (int i = 0; i < 9; i++) {
+        if (i % 3 == 0 && i != 0) {
+            printf("-------------------------\n");
+        }
+        for (int j = 0; j < 9; j++) {
+            if (j % 3 == 0 && j != 0) {
+                printf("| ");
+            }
+            printf("%c ", sudoku[i][j]);
+        }
+        printf("\n");
+    }
+}
+
+int main() {
+    char sudoku_board[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'}
+    };
+
+    print_sudoku(sudoku_board);
+
+    return 0;
+}