Assertion: convention's force | /r/HasProperty | differentiated in original precision club system
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Source sentences:
text: In the original Precision Club system, forcing and non-forcing Stayman are differentiated in the start: 2♣ by responder shows only invitational values (and the continuation is the same as in basic Stayman), while 2♦ is forcing to game (responder bids 2NT without majors).