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Old 01-10-2019, 04:06 AM
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Quartz is offline
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Join Date: Jan 2003
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Originally Posted by amarone View Post
Playing matchpoints, I picked up K AKQJ87 KQJ10 AK.

This is the first hand I have had in 42 years playing bridge that merits a 4NT opener. This asks partner to respond specific aces, i.e. 5C = 0 aces, 5D/H/S = ace of D/H/S respectively. 5NT = ? 6C = ? One of them means "two aces", the other means "ace of clubs". But which? Quite a few years ago English internationals Forrester/Lodge had a disaster over a disagreement on this.
(Without looking it up) 5N = two aces, 6C = ace of clubs.