In a semi-final match in the Senior World Championships, you have to find the best description with a limited opening bid.
N-S vul, South deals. As South, you hold:
Your opening 1NT range is 14-16. This shape is acceptable for a 1NT opening.
A 1!D opening is also acceptable with this shape, showing 11-15 with 2+ diamonds. A follow-up 2!C call will show both minors, although after a 1!S response a 2!C rebid could be 1-4-4-4 or 1-4-3-5.