Mathe is a simple defense against a strong 1C opener. The convention was created by Lew Mathe, the late American expert and WBF Grand Master.

Double Hearts and spades (the majors)
1 Natural
1 Natural
1 Natural
1NT Clubs and diamonds (the minors)


In response to a double or 1NT overcall, advancer normally pulls to one of the advertised suits. Any new suit by advancer is natural.

See also

  • CRASH
    A defense against a strong 1 that uses ambiguous two-suited overcalls.

  • Mathe Asking Bids
    A convention by Lew Mathe for exploring major-suit slam possibilities.

  • Truscott Defense to 1
    A defense against a strong 1 that emphasises two-suited hands.

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