Lack of medical license\n\n While some doctors openly praise Black Jack's for his surgical abilities, others disdain him for not having a license. The manga explains that he lost his medical license when he went against his superiors orders and performed a surgery on his lover who had late stage ovarian cancer.

Blackjack can be played in the following locations:

Van Horn Trading Post - $3.00 buy-in.
Rhodes - $4.00 buy-in.
Blackwater - $5.00 buy-in.
Gang camp - availability varies.