Marco Polo's Journey/Answer


Step 0                  Step 1                  Step 2                  Step 3                  Step 4
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|       |       |   |   |       |       |   |   |       |       |   |   |       |       |   |   |       |       |   |
+       +---+---+   +   +       +---+---+   +   +       +---+---+   +   +       +---+---+   +   +       +---+---+   +
|       |       |   |   |       |       |   |   |       |       |   |   |       |       |   |   |       |       |   |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |   |           |   |   |   |           |   |   |   |           |   |   |XXX|           |   |   |           |XXX|
+   +   +---+---+---+   +   +   +---+---+---+   +   +   +---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+
|   |   |   |   |   |   |   |   |   |   |   |   |   |   |XXX|   |   |   |   |   |XXX|   |   |   |   |   |XXX|   |   |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+   +---+---+---+   +---+   +---+---+---+
|       |XXX|XXX|XXX|   |XXX|XXX|XXX|       |   |   |XXX|XXX|       |   |   |   |XXX|       |   |   |   |XXX|       |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+

Step 5                  Step 6                  Step 7                  Step 8                  Step 9
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|       |       |   |   |       |       |   |   |       |       |XXX|   |       |XXX|       |   |       |XXX|       |
+       +---+---+   +   +       +---+---+   +   +       +---+---+---+   +       +---+---+---+   +       +---+---+---+
|       |       |   |   |       |       |   |   |       |       |XXX|   |       |       |XXX|   |       |XXX|       |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |           |XXX|   |   |           |XXX|   |   |           |   |   |   |           |   |   |   |           |   |
+   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+   +   +   +---+---+---+   +   +   +---+---+---+   +
|   |   |XXX|XXX|   |   |   |   |XXX|   |XXX|   |   |   |XXX|   |   |   |   |   |XXX|   |   |   |   |   |XXX|   |   |
+---+   +---+---+---+   +---+   +---+---+---+   +---+   +---+---+---+   +---+   +---+---+---+   +---+   +---+---+---+
|   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+

Step 10                 Step 11                 Step 12                 Step 13                 Step 14
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|XXX|       |       |   |   |       |       |   |   |       |       |   |   |       |       |   |   |       |       |
+---+       +---+---+   +   +       +---+---+   +   +       +---+---+   +   +       +---+---+   +   +       +---+---+
|XXX|       |       |   |   |       |       |   |   |       |       |   |   |       |       |   |   |       |       |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |           |   |   |XXX|           |   |   |   |           |   |   |   |           |   |   |   |           |   |
+   +---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +
|   |   |XXX|   |   |   |XXX|   |XXX|   |   |   |XXX|   |XXX|   |   |   |   |XXX|XXX|   |   |   |   |XXX|XXX|XXX|   |
+---+   +---+---+---+   +---+   +---+---+---+   +---+   +---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+
|   |   |   |       |   |   |   |   |       |   |XXX|   |   |       |   |   |XXX|   |       |   |   |   |   |       |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+

Step 15                 Step 16                 Step 17                 Step 18                 Step 19
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |       |       |   |   |XXX|XXX|       |   |   |       |XXX|XXX|   |   |       |       |   |   |       |       |
+   +       +---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+
|   |       |       |   |   |       |       |   |   |       |       |   |   |       |XXX|XXX|   |   |XXX|       |XXX|
+---+---+---+---+---+   +---+       +---+---+   +---+       +---+---+   +---+       +---+---+   +---+---+       +---+
|   |XXX|XXX|XXX|   |   |   |       |XXX|   |   |   |       |XXX|   |   |   |       |XXX|   |   |   |XXX|       |   |
+---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +
|   |           |   |   |   |           |   |   |   |           |   |   |   |           |   |   |   |           |   |
+   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+
|   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+

Step 20                 Step 21                 Step 22                 Step 23                 Step 24
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |       |       |   |   |       |       |   |   |       |       |   |   |       |       |   |   |       |       |
+   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+
|   |XXX|       |XXX|   |   |XXX|       |XXX|   |   |XXX|       |XXX|   |   |XXX|       |XXX|   |   |XXX|       |XXX|
+---+---+       +---+   +---+---+       +---+   +---+---+       +---+   +---+---+       +---+   +---+---+       +---+
|XXX|   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |
+---+---+---+---+   +   +   +---+---+---+   +   +   +---+---+---+   +   +   +---+---+---+   +   +   +---+---+---+   +
|   |           |   |   |   |           |   |   |   |           |   |   |   |           |   |   |   |           |   |
+   +---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |   |   |       |   |XXX|   |   |       |   |   |XXX|   |       |   |   |   |XXX|       |   |   |   |       |XXX|
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+

Step 25                 Step 26                 Step 27                 Step 28                 Step 29
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |       |       |   |   |       |       |   |   |XXX|XXX|       |   |   |       |XXX|XXX|   |   |       |       |
+   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+       +
|   |XXX|       |XXX|   |   |XXX|XXX|       |   |   |       |       |   |   |       |       |   |   |       |       |
+---+---+       +---+   +---+---+---+       +   +---+---+---+       +   +---+---+---+       +   +---+---+---+---+---+
|   |   |       |XXX|   |   |   |XXX|       |   |   |   |XXX|       |   |   |   |XXX|       |   |   |   |XXX|XXX|XXX|
+   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+
|   |           |   |   |   |           |   |   |   |           |   |   |   |           |   |   |   |           |   |
+---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +
|   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+

Step 30                 Step 31                 Step 32                 Step 33                 Step 34
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |       |XXX|XXX|   |   |XXX|XXX|       |   |   |       |       |   |   |       |       |   |   |       |       |
+   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+
|   |       |       |   |   |       |       |   |   |XXX|XXX|       |   |   |XXX|       |XXX|   |   |   |       |XXX|
+---+---+---+       +   +---+---+---+       +   +---+---+---+       +   +---+---+       +---+   +---+---+       +---+
|   |   |XXX|       |   |   |   |XXX|       |   |   |   |XXX|       |   |   |   |       |XXX|   |   |XXX|       |XXX|
+   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+
|   |           |   |   |   |           |   |   |   |           |   |   |   |           |   |   |   |           |   |
+---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +
|   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+

Step 35                 Step 36                 Step 37                 Step 38                 Step 39
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |       |       |   |   |       |       |   |   |       |       |   |   |       |       |   |   |       |       |
+   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+
|   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |
+---+---+       +   +   +---+---+       +   +   +---+---+       +   +   +---+---+       +   +   +---+---+       +   +
|   |XXX|       |   |   |   |XXX|       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |
+   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+
|   |           |XXX|   |   |XXX|           |   |   |XXX|           |   |   |   |           |   |   |   |           |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |   |       |XXX|   |   |   |       |XXX|   |   |XXX|       |XXX|   |XXX|XXX|       |XXX|   |       |XXX|XXX|XXX|
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+

Step 40                 Step 41                 Step 42                 Step 43                 Step 44
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |       |       |   |   |       |       |   |   |       |       |   |   |       |       |   |   |       |       |
+   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+
|   |   |       |   |   |   |   |XXX|XXX|   |   |   |XXX|XXX|   |   |   |   |XXX|   |   |   |   |   |   |   |   |   |
+---+---+       +   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +
|   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |XXX|       |   |   |   |XXX|       |   |
+   +---+---+---+---+   +   +---+       +---+   +   +---+       +---+   +   +---+       +---+   +   +---+       +---+
|   |   |XXX|XXX|XXX|   |   |   |       |XXX|   |   |   |       |XXX|   |   |   |       |XXX|   |   |XXX|       |XXX|
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|       |           |   |       |           |   |       |           |   |       |           |   |       |           |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+

Step 45                 Step 46                 Step 47                 Step 48                 Step 49
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |       |       |   |XXX|       |       |   |       |XXX|       |   |       |       |XXX|   |       |       |   |
+   +---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+   +
|   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
+---+---+---+---+   +   +   +---+---+---+   +   +   +---+---+---+   +   +   +---+---+---+   +   +   +---+---+---+---+
|XXX|   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |XXX|
+---+   +       +---+   +---+   +       +---+   +---+   +       +---+   +---+   +       +---+   +---+   +       +---+
|XXX|   |       |XXX|   |XXX|   |       |XXX|   |XXX|   |       |XXX|   |XXX|   |       |XXX|   |XXX|   |       |XXX|
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|       |           |   |       |           |   |       |           |   |       |           |   |       |           |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+

Step 50                 Step 51                 Step 52                 Step 53                 Step 54
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|       |       |   |   |       |       |   |   |       |       |   |   |       |       |   |   |       |       |   |
+---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +
|   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
+   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+
|   |   |XXX|       |   |   |XXX|   |       |   |   |XXX|   |       |   |   |XXX|   |       |   |   |XXX|   |XXX|XXX|
+---+   +---+       +   +---+---+   +       +   +---+---+   +       +   +---+---+   +       +   +---+---+   +---+---+
|XXX|   |XXX|       |   |XXX|XXX|   |       |   |       |   |       |   |       |   |       |   |       |   |       |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+       +
|       |           |   |       |           |   |XXX|XXX|           |   |           |XXX|XXX|   |           |       |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+

Step 55                 Step 56                 Step 57                 Step 58                 Step 59
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|       |       |   |   |       |       |   |   |       |       |   |   |       |       |   |   |       |       |   |
+---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +
|   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |XXX|   |   |   |   |   |XXX|   |   |   |   |
+   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |XXX|   |       |   |   |XXX|   |       |   |   |XXX|   |       |   |   |XXX|   |       |   |   |   |XXX|       |
+---+---+   +       +   +---+---+   +       +   +---+---+   +       +   +   +---+   +       +   +   +   +---+       +
|       |   |       |   |       |   |       |   |XXX|XXX|   |       |   |   |XXX|   |       |   |   |   |XXX|       |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|           |XXX|XXX|   |XXX|XXX|           |   |       |           |   |       |           |   |       |           |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+

Step 60                 Step 61                 Step 62                 Step 63                 Step 64
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|       |       |   |   |       |       |XXX|   |       |       |   |   |       |       |   |   |       |       |   |
+---+---+---+---+   +   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|XXX|   |   |   |   |   |XXX|   |   |   |XXX|   |XXX|   |   |XXX|XXX|   |XXX|   |XXX|XXX|   |   |XXX|XXX|XXX|   |   |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |   |       |XXX|   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |
+   +   +       +---+   +   +   +       +   +   +   +   +       +   +   +   +   +       +   +   +   +   +       +   +
|   |   |       |XXX|   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|       |           |   |       |           |   |       |           |   |       |           |   |       |           |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+

Step 65                 Step 66                 Step 67                 Step 68                 Step 69
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|XXX|XXX|       |   |   |   |XXX|       |   |   |   |XXX|       |   |   |   |XXX|       |   |   |   |XXX|       |   |
+---+---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+
|XXX|       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |XXX|   |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |   |       |   |   |XXX|   |       |   |   |   |XXX|       |   |   |   |       |XXX|   |   |   |       |XXX|   |
+   +   +       +   +   +---+   +       +   +   +   +---+       +   +   +   +       +---+   +   +   +       +---+   +
|   |   |       |   |   |XXX|   |       |   |   |   |XXX|       |   |   |   |       |XXX|   |   |   |       |   |   |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|       |           |   |       |           |   |       |           |   |       |           |   |       |           |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+

Step 70                 Step 71                 Step 72                 Step 73                 Step 74
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |XXX|       |   |   |XXX|   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |
+   +---+---+---+---+   +---+   +---+---+---+   +   +   +---+---+---+   +   +   +---+---+---+   +   +   +---+---+---+
|   |XXX|       |   |   |XXX|   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |XXX|XXX|   |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |       |XXX|   |   |   |       |XXX|   |   |XXX|       |XXX|   |   |       |XXX|XXX|   |   |       |       |   |
+   +       +---+   +   +   +       +---+   +   +---+       +---+   +   +       +---+---+   +   +       +---+---+   +
|   |       |   |   |   |   |       |   |   |   |XXX|       |   |   |   |       |XXX|   |   |   |       |XXX|   |   |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|       |           |   |       |           |   |       |           |   |       |           |   |       |           |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+

Step 75                 Step 76                 Step 77                 Step 78                 Step 79
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |   |       |   |   |   |   |       |XXX|   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |
+   +   +---+---+---+   +   +   +---+---+---+   +   +   +---+---+   +   +   +   +---+---+   +   +   +   +---+---+   +
|   |   |   |XXX|XXX|   |   |   |   |   |XXX|   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|       |       |   |   |       |       |   |   |       |       |XXX|   |       |       |   |   |       |       |   |
+       +---+---+   +   +       +---+---+   +   +       +---+---+---+   +       +---+---+---+   +       +---+---+---+
|       |XXX|   |   |   |       |XXX|   |   |   |       |XXX|   |XXX|   |       |XXX|XXX|XXX|   |       |           |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|       |           |   |       |           |   |       |           |   |       |           |   |       |XXX|XXX|XXX|
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+

Step 80                 Step 81                 Step 82                 Step 83                 Step 84
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |
+   +   +---+---+   +   +   +   +---+---+   +   +   +   +---+---+   +   +   +   +---+---+   +   +   +   +---+---+   +
|   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|       |       |   |   |XXX|XXX|       |   |   |       |       |   |   |       |       |   |   |       |       |   |
+       +---+---+---+   +---+---+---+---+---+   +       +---+---+---+   +       +---+---+---+   +       +---+---+---+
|       |           |   |       |           |   |       |           |   |       |           |   |       |XXX|XXX|XXX|
+---+---+---+---+---+   +       +---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|XXX|XXX|       |XXX|   |       |       |XXX|   |XXX|XXX|       |XXX|   |       |XXX|XXX|XXX|   |       |           |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+

Step 85                 Step 86                 Step 87                 Step 88                 Step 89
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |XXX|   |       |   |   |   |XXX|       |   |
+   +   +---+---+   +   +   +   +---+---+   +   +   +   +---+---+   +   +---+   +---+---+   +   +   +---+---+---+   +
|   |   |   |   |   |   |   |   |XXX|   |   |   |   |   |XXX|   |   |   |XXX|   |XXX|   |   |   |   |XXX|XXX|   |   |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|       |XXX|XXX|   |   |       |XXX|   |   |   |XXX|       |   |   |   |   |       |   |   |   |   |       |   |   |
+       +---+---+---+   +       +---+---+---+   +---+       +---+---+   +   +       +---+---+   +   +       +---+---+
|       |XXX|       |   |       |XXX|       |   |XXX|       |       |   |   |       |       |   |   |       |       |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|       |           |   |       |           |   |       |           |   |       |           |   |       |           |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+

Step 90                 Step 91                 Step 92                 Step 93                 Step 94
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |XXX|       |   |   |   |XXX|       |   |   |   |XXX|       |   |   |   |XXX|       |XXX|   |   |XXX|XXX|       |
+   +---+---+---+   +   +   +---+---+---+   +   +   +---+---+---+   +   +   +---+---+---+---+   +   +---+---+---+---+
|   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |   |   |       |   |   |
+---+       +---+---+   +---+       +---+---+   +---+       +---+---+   +---+       +---+   +   +---+       +---+   +
|   |       |   |   |   |   |       |   |   |   |   |       |   |XXX|   |   |       |   |   |   |   |       |   |   |
+   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+
|   |XXX|XXX|       |   |   |XXX|       |XXX|   |   |XXX|       |   |   |   |XXX|       |   |   |   |XXX|       |   |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|       |           |   |       |           |   |       |           |   |       |           |   |       |           |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+

Step 95                 Step 96                 Step 97                 Step 98
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|   |       |       |   |   |       |       |   |XXX|       |       |   |       |XXX|       |
+   +       +---+---+   +   +       +---+---+   +---+       +---+---+   +       +---+---+---+
|   |       |   |   |   |   |       |   |   |   |XXX|       |   |   |   |       |XXX|   |   |
+---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +   +---+---+---+---+   +
|   |XXX|XXX|   |   |   |XXX|   |XXX|   |   |   |   |   |XXX|   |   |   |   |   |XXX|   |   |
+   +---+---+---+---+   +---+   +---+---+---+   +   +   +---+---+---+   +   +   +---+---+---+
|   |XXX|       |   |   |XXX|   |       |   |   |   |   |       |   |   |   |   |       |   |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
|       |           |   |       |           |   |       |           |   |       |           |
+---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+   +---+---+---+---+---+
Marco Polo's Journey