Originally posted by Toe
This is not serious, but I thought of it as a little 'fun' idea.
At each board position possible, there can be generated a checksum that uniquely defines it (including flags for king has moved and so on).
Thus every RHP game can be defined at every move.
Now imagine that for evey move, a database (RHP and/or other) is consulted to determine whether ...[text shortened]... re brought to everyone's attention, though that might encourage utterly mad moves. But why not?
Part of it is already done. Each game has a FEN position for every move...
Fen : 1rr3k1/1pp2pbp/p2qp1p1/1P1n4/3P4/P2RBQ2/1P2BPPP/2R3K1 w - - 0 22
You can find these from the game details page of any "current" game.
Now we just need one of the code monkeys to get some time to sort through them all. At home I have a data-base of perhaps 100,000 games, and find I am out of the base after about 5 or so moves... so i am sure there will be many unique positions.