...the simple text interface of the message board just does not suffice to get the ideas across.

FYI as a registered user, you can bracket the text with <pre> ... </pre> HTML tags in order to preserve your formatting. For example (from a previous post):

+---+---+---+---+---+---+---+---+
| C | h | 1 |   |   | C | h | 2 |
+---+---+---+---+---+---+---+---+
| 1 | 0 | 3 |   |   | 1 | 4 | 9 |
+---+---+-=-+---+---+---+---+-=-+