Passes reveal information

A seat passing on 2 and 6 has no remaining tile matching those ends at that moment. That does not reveal the whole hand or guarantee a block next turn; the ends will change. Keep the concrete observation rather than an exaggerated conclusion.

Keep a useful outlet

If your partner has played several fives and opponents have passed on that number, opening a five may help. Still compare your own tiles: making both ends identical can reduce everyone’s options, including your partner’s.

Share the risk

A heavy tile creates risk if the board blocks, but always unloading it can give an opponent a useful end. Consider remaining tile counts and visible passes. “Always play the biggest” cannot replace reading the board.

Review one decision

After a hand, find one move where you changed an important end. Compare its alternative using what you knew then, not hands revealed later. That teaches more than blaming a partner for tiles nobody could see.