Well, I thought
http://en.wikipedia.org/wiki/Mornington_Crescent did a fine job of explaining the idea. Personally, I
did pick it up by watching the game in play. But if you really want to know, you could always PM me or something.
And as for my next move:
Osterly
Ordinarily, I'd explain this as usual, but this move is do devilishly complicated and clever that it would take quite a bit of writing, and justice still wouldn't be done, so I'd just advise you all to check out page 71 of the
Integrated Mornington Crescent Rulebook: Obverse Variant, 9th edition, 4th printing (German translation).