diff --git a/map.md b/map.md
new file mode 100644
index 0000000..92fd42d
--- /dev/null
+++ b/map.md
@@ -0,0 +1,18 @@
+## Map
+
+```
++--------+--------+--------+
+|        |        |        |
+|        |        |        |
+++---+  ++----+  ++----+  ++
+ |   |                    |
+ |   |                    |
+ |   +---+   +--+---------++
+ |   +          +          |
+ |                         |
+ |   +          +          |
+++  ++          |          |
+|    |          |          |
+|    +----------+          |
++----+          +----------+
+```