The bots in jack of diamonds = -10 game have not been completely taught. They don't recognize that they can win a trick with the jd in in it for a -10 score. Generally, their lack of strategic know-how tends to ruin games, because they lead spades to low, lead spades when low doesn't have any, or lead spades to a player (not low) they've just passed the queen of spades to. Please help these poor beggars become worthy opponents. Thank you.