Two Way New Minor Forcing occurs in sequence: 1m–1M-1NT–? and guarantees five and 11+ HCP.

Other names are: XY Notrump convention and XY NT convention.

1m–1♥-1NT–? 

to play or correct:

• 2♣ - 6-9 HCP relay to 2♦ or invite 10-11(12) HCP and forcing to 2NT;

• 2♦ - artificial 12+ HCP, game forcing;

• 2♥ - 5+♥, 8-9 HCP;

• 2♠ - 6+♥/5+♠;

• 2NT -

• three in the minor partner suit - support;

• three in the second minor - 6+;

• 3♥ - 6+♥;

• 3♠ - 6+♥/5+♠;

• 3NT -

1m–1♠-1NT–?

to play or correct, 6-9 HCP:

• 2♣ - 6-9 HCP relay to 2♦ or invite 10-11(12) HCP and forcing to 2NT;

• 2♦ - artificial 12+ HCP, game forcing;

• 2♥ - 4+♥, 5+♠;

• 2♠ - 5+♠, 8-9 HCP;

• 2NT -

• three in the minor partner suit - support;

• three in the second minor - 6+;

• 3♥ - 5+♥/5+♠;

• 3♠ - 6+♠;

• 3NT -

1m–1♠-1NT–2♣-2♦-?

• • • pass - with 6-9 HCP, 6+♦;

    • 2♥ - 4+♥, 5♠ - invitational values (9-11 HCP);

    • 2♠ - 5+♠, invitational, 10-11 HCP;

    • 2NT - invitational (2NT directly would be invitational as well);

    • three in the minor partner suit - support;

    • three in the second minor - 6+;

    • 3♥ - 5♥-5♠, invitational;  

    • 3♠ - 6+♠, - invitational values;

    • 3NT - choice of games (5332).

Opener’s priority list after 1m–1♥/1♠-1NT-2♦-?:

• show 4-cards in the other major;

• show 3-card support for responder’s suit;

• show 5-cards in a minor;

• notrump shows nothing else to say.

1m–1♥-1NT-2♦-?

• • 2♥ - 3+♥, 12- HCP;

  • 2NT - no 3♥, 12- HCP;

  • 3♥ - 3+♥, 13+ HCP;

  • 3NT - no 3♥, 13-14 HCP.

1m–1♠-1NT-2♦-?

• • • 2♥ - 4+♥, 12- HCP;

    • 2♠ - 3♠, 12-  HCP;

    • 2NT - no 3♠, 12- HCP;

    • 3♥ - 4+♥, 13+ HCP;

    • 3♠ - 3♠, 13+  HCP;

    • 3NT - no 3♠, 13-14 HCP.

Two Way New Minor Forcing is OFF if the opponents overcalled and the option "TWNMF by passed hand" is off, but on if they only doubled on the 1st round.