The play by South seemed pretty routine on this one. It looks like South will lose one heart, two diamonds, and perhaps two clubs and one spade.
At trick 6 East continued with the king of hearts and North ruffed. At trick 7 declarer led a low club toward dummy’s king, West playing the jack and East the nine!
I watched in horror as declarer led a low club to seven in hand. To declarer’s surprise it won the trick. Declarer had not been watching the club spots. Cashing the eight of clubs and the remaining two clubs would bring in 11 tricks for a top board.
East erred by playing the nine of clubs when also holding the six.
South and East were not paying attention to the hierarchy of cards in the club suit. It’s hard to get newer players out of the mindset that any card lower than a 10 is “x” and inconsequential. It’s the hierarchy itself that facilitates remembering which card has risen to the top in trick taking power. After two rounds of clubs in this hand the eight had risen to boss club.