> ...by the way can you construct a situation requiring
> three passes??
I suppose this is a three pass position.
6 . . . . . . . . .
5 * * * * * * * * *
4 o o o o o o o o o
3 * * . o . * * * o
2 . o * o * o . * o
1 * * * o * * * * o
A B C D E F G H I
BR Johan