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1 ACBL. Daily Bulletin, Volume 61, Number 9. 2019.

2 Klinger, Ron. Bridge Conventions, Defences and Countermeasures. London, Weindenfeld & Nicolson, 2017.

See also

  • Marvin 2S
    An artificial 2S that shows a decent 7-card minor with a side control.

  • Weak Two Bids
    Opening bids of 2// to show a 6-card suit with a weak hand.