Overruff

East can overruff or discard, but his queen of trumps wins the defenders 'only trick. ❋ Unknown (2010)

Whichever red suit he led from the table, West could overruff if South ruffed low, or discard if South ruffed with the ace or the king. ❋ Unknown (2010)

Otherwise you would ruff the diamond with the seven and East would overruff with the eight to cash his heart, and you would have ♠ AJ remaining over South's ♠ K10. ❋ Unknown (2010)

When Louie ruffs the next spade, West can overruff and lead a club, but Louie wins in his hand, takes the A-K of trumps and ruffs a diamond. ❋ Unknown (2010)

I could think of one reason only: the fear that the Walrus could not overruff dummy, and would thereby give vital information to declarer. ❋ VICTOR MOLLO (1979)

South had to overruff with the ace, and now West had to score the setting trick with his nine-six of spades behind declarer's ten-eight. ❋ By PHILLIP ALDER (2011)

The kibitzers were suitably impressed when The Visitor, rather than overruff, discarded a diamond. ❋ Unknown (2010)

Having no more himself, declarer will ruff with the jack or the six, maybe, and whatever it is your poor partner won’t be able to overruff. ❋ VICTOR MOLLO (1979)