Redeal if hand contains only 9s and 10s

Redeal if hand has exactly one ace and no face cards

Dealer must call trump if all players pass

Call no trump in round 2: no bowers, highest of led suit wins

Defender can go alone when opponent goes alone

4 points to defenders if maker takes 0 tricks

Ordering up your partner forces you to go alone

Second round limited to same color as turned card

Second round limited to opposite color of turned card

Dealer exchanges a card with partner after trump is called

Must go alone when holding both bowers