What is the fewest number of White chess pieces from the start of a game, that can be placed on a standard chessboard in order to make it impossible to place a Black piece on the board that is not under attack?

Remember,
The final answer must be a subset of the original starting pieces, i.e. only 1 queen, 2 rooks, etc.
Bishops should be on different colour squares.
It is not necessary to attack squares with white pieces on them, as the black piece cannot share a square.

Don't know if it's the fewest, but I came up with 8 pieces...

R . . . . . . .
. . . . P . . .
. P . . . . . .
. . . Q . . . .
. . . . . . . R
. . . . . . . .
. B B . . K . .
. . . . . . . .

Posted by Sing4TheDay on 2004-08-31 16:29:17