diff --git a/print n_to_1 backtracking b/print n_to_1 backtracking
new file mode 100644
index 0000000..0117a43
--- /dev/null
+++ b/print n_to_1 backtracking	
@@ -0,0 +1,10 @@
+# constraint: without using -
+def func(i, n):
+    if i < n:
+        return
+    func(i, n + 1)
+    print(n)
+
+
+func(5, 1)
+