Get from a to b. XXes in the cells are floors.
Normal, Random 2D Maze		Public_15_n_2222.txt

+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
|                          |              |  |
+--+--+--+--+  +--+--+--+  +  +--+  +  +--+  +
|                 |  |        |     |        |
+--+--+--+--+  +--+  +--+  +  +--+  +  +  +  +
|     |     |  |           |  |  |  |  |  |  |
+--+  +  +--+  +  +--+  +--+--+  +  +--+  +  +
|              |     |  |  |  |        |  |  |
+--+  +--+--+  +--+--+  +  +  +  +  +  +--+  +
|     |  |  |     |  |  |        |  |  |  |  |
+  +  +  +  +  +--+  +--+--+  +  +--+--+  +--+
|  |  |           |           |              |
+--+--+  +--+  +  +--+--+--+  +--+  +  +--+  +
|  |     |     |  |              |  |  |     |
+  +--+  +--+  +--+  +--+  +--+--+  +  +  +--+
|        |        |  |        |     |  |     |
+--+--+  +--+  +--+--+--+  +--+--+  +--+  +  +
|  |     |        |        |     |     |  |  |
+  +  +--+--+  +--+  +--+--+  +--+  +  +  +--+
|           |  |  |     |           |  |     |
+  +  +--+--+  +  +--+--+--+--+--+  +--+--+  +
|  |  |           |  |                 |     |
+  +--+--+  +  +--+  +--+  +--+--+  +  +  +--+
|  |        |  |  |  |     |        |  |     |
+  +  +--+  +--+  +  +--+  +  +--+--+--+--+  +
|  |  |     |  |           |  |           |  |
+  +  +  +--+  +--+--+  +--+  +  +  +--+  +--+
| b|  |  |  |              |     |     |     |
+--+--+--+  +  +--+  +  +  +--+  +  +  +  +--+
| a               |  |  |  |     |  |  |     |
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+


From a to b takes 53 steps.