Richard_6_x_2222.txt

Get from a to b. XXes in the cells are floors.


+--+--+--+--+--+--+
|   XX|   XX XX XX|
+--+--+--+--+--+--+
|   XX XX XX|  |  |
+--+--+--+--+--+--+
|XX XX|XX XX XX XX|
+  +--+--+--+  +--+
|   XX XX XX|   XX|
+  +--+  +--+--+--+
|XX XX|XX|   XX XX|
+  +  +--+--+--+--+
|XX|XX|  |XX      |
+--+--+--+--+--+--+


+--+--+--+--+--+--+
|XX XX   |  |  |XX|
+  +--+  +--+--+  +
|   XX|XX XX      |
+--+  +--+--+--+--+
|XX|XX|XX XX|XX|XX|
+  +--+  +--+  +  +
|  |XX|   XX    XX|
+  +  +--+--+  +  +
|XX XX XX   |XX|XX|
+  +--+  +  +--+--+
|XX|XX   |  |  |Xa|
+--+--+--+--+--+--+


+--+--+--+--+--+--+
|XX   |XX XX XX XX|
+--+--+  +--+--+--+
|  |XX XX|XX XX|XX|
+  +--+--+  +--+--+
|XX XX|XX|XX|  |  |
+  +  +  +--+--+--+
|  |XX XX   |XX XX|
+--+--+  +--+--+  +
|  |  |XX|  |  |XX|
+--+--+--+--+--+--+
|  |  |XX|XX    XX|
+--+--+--+--+--+--+


+--+--+--+--+--+--+
|XX|XX    XX|  |XX|
+  +  +--+--+--+  +
|   XX XX|XX XX|  |
+  +  +--+--+  +--+
|  |XX XX|XX|   XX|
+--+--+  +  +--+--+
|XX|  |XX|XX XX XX|
+  +--+--+--+--+--+
|XX|  |  |XX|  |  |
+--+  +--+--+--+--+
|XX XX|   XX|XX|  |
+--+--+--+--+--+--+


+--+--+--+--+--+--+
|XX|XX|XX|  |XX XX|
+  +  +--+  +--+  +
|   XX      |   XX|
+--+  +  +--+--+--+
|XX|XX|XX|      XX|
+--+  +--+  +--+--+
|XX    XX|XX|  |XX|
+--+  +--+--+  +  +
|XX XX XX|  |XX XX|
+--+--+  +  +--+  +
|XX XX    XX|  |  |
+--+--+--+--+--+--+


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


From a to b takes 29 steps.