misguess

South could not misguess: playing the 10 or the queen was due to make the slam.

West had no idea that his partner held the heart ace, so he played low in the hope that South would misguess.

The opening bid marked him with the diamond ace, so there was no hope that South would misguess.

If you misguess the range by twenty percent on a shot at two hundred yards, you'll be off by an inch and a half.

If dummy has a Q-10 combination, for example, and partner has the jack, the declarer may misguess.

Since the opening bid had marked West with nearly all the high-card strength, there was little chance that South would misguess.