It is unlawful for any:
Subd. 1. Person to knowingly induce another to make an illegal sale or purchase of an alcoholic beverage;
Subd. 2. Licensee to sell or serve an alcoholic beverage to any person who is obviously intoxicated;
Subd. 3. Licensee to fail, where doubt could exist, to require adequate proof of age of a person upon licensed premises;
Subd. 4. Licensee to sell an alcoholic beverage on any day, or during any hour, when such sales are not permitted by law;
Subd. 5. Licensee to allow consumption of an alcoholic beverage on licensed premises on any day, or during any hour, when the consumption is not permitted by law; and/or
Subd. 6. Person to purchase an alcoholic beverage on any day, or during any hour, when the sales are not permitted by law.