8. When playing against a lone hand, never lead a king, unless you have
the queen, nor change the suit, nor permit, if possible to prevent it,
the ombre to be last player.
9. Call on the strongest suits, except you have a queen guarded, and, if
elder hand, you have a better chance than when middle hand.
10. A good player may succeed better with a weaker hand, when either
elder or younger, than if middle hand.