The two no-trump response was natural and forcing, not denying a four-card major.

The two no-trump response was forcing in the partnership style, and North showed his hearts.

If South's one no-trump response had been forcing, as it is with most modern experts, North's pass would have given the game away.

His one no-trump response in principle denied a major suit, so two hearts was simply an attempt to find a 3-4 fit.

East made a one no-trump response, which was an artificial game-forcing action.

He does not give any bidding, but the sequence shown, including forcing a one no-trump response, would be appropriate in the modern American style.

The two no-trump response was nonforcing and showed about 11 points, an English method now favored by some tournament players here.

He had a close decision when his one-spade opening received a one no-trump response.

The two no-trump response was an inquiry and three hearts showed a minimum heart hand.

Since two clubs would have been a virtual game force, North used the forcing one no-trump response.