Four rounds of clubs were played, giving West a trick with the jack.
But when she led the third round of clubs West inserted the eight.
The defense began with three rounds of clubs and South ruffed.
But he will have to guess next time, with no substantial clue, when the fourth round of clubs is led from the South hand.
He then led four rounds of clubs, and East refused to ruff.
That was most unlikely, however, for West had discarded a diamond on the second round of clubs.
South had no trouble when three rounds of clubs were led.
On the second round of clubs East can and should play the jack.
When West discarded on the second round of clubs, there was more work to do.
The defense played three rounds of clubs and the queen won in dummy.