Unusual 1NT is a 1NT overcall made by passed hand or after both opponents have bid. There are two situations:

• • opponents showed 2 suits - Sandwich Notrump shows a weak two-suited hand in the remaining suits:

W N E S

P 1♥ P

1♠ 1N*1

*1 Unusual 1NT

• • opponents showed 1 suit - passed hand shows a weak two-suited hand in the lower suits. The shape cannot be 4441 or 5440:

W N E S

P

P P 1♥ 1N*1

*1 Unusual 1NT - minors

If the higher suit is major, its length is exactly 4. 

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