Then she would have been able to claim the slam.

When this won, he was able to claim the grand slam.

If this had won the trick he would have drawn the missing trump and claimed the slam.

Then she conceded a diamond trick and claimed the slam.

If both defenders had followed, he would have claimed the grand slam.

He led another club, planning to finesse, but the appearance of the king permitted him to claim the slam.

When the king appeared he could claim the grand slam.

He ruffed a club with his last trump and claimed the slam.

When the queen fell, his problems were over and he claimed the grand slam.

It was then easy to draw the missing trump and claim the slam, since the clubs were established.