UNBLOCKING AT NO-TRUMP

+----------------+-----------------+-------------+

| HOLDING | ON PARTNER'S | PLAY |

| | LEAD OF | |

+----------------+-----------------+-------------+

|King X |Ace |King |

+----------------+-----------------+-------------+

|Ace X |King |Ace |

+----------------+-----------------+-------------+

|King X |Queen |King |

+----------------+-----------------+-------------+

|Queen X X |King and Ace |Queen on Ace |

+----------------+-----------------+-------------+

|King, Queen X |Ace |Queen |

+----------------+-----------------+-------------+

|Queen, Jack X |Ace |Jack |

+----------------+-----------------+-------------+

|Queen, Jack X |King |Jack |

+----------------+-----------------+-------------+

|King, Queen X |Jack |Queen |

+----------------+-----------------+-------------+

|Jack, six, five,|King |Five |

| two | | |

+----------------+-----------------+-------------+

|Queen, nine, |King |Seven |

| seven, three, | | |

| two | | |

+----------------+-----------------+-------------+

Bridge Axioms and Laws · 第 41 / 42 题