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It is normal to lead aggressively against a small slam, but passively against a grand slam.

With two aces, the trump king and a partner who had bid freely at the three-level, he doubled and found that he could not defeat a small slam.

Their opponents bid to a small slam, which Lightner doubled, holding a void in his right-hand opponent’s side suit and an ace.

In the given auction one no-trump showed 15 to 17 points; four no-trump was quantitative, inviting a small slam; and six no-trump was automatic with a maximum 17 points.