East could win and give his partner a club ruff, but Greenberg had the rest.

South took his club ruff and should have led a trump.

There was no way to prevent West from scoring another club ruff.

Then a diamond to East's king would permit a club ruff.

Then he could maneuver two club ruffs and make his game.

East had missed another chance to give its partner a club ruff.

Now a club ruff brought down the king and the rest was easy.

If he played a heart, the club ruff would score.

This let East win with the queen and give his partner a club ruff.

East won with the king and gave his partner the essential club ruff to defeat the game.