This wild hand caused some ill-feeling in a teams match last night. South's 2NT was not alerted, and was systemically a good pre-empt in a minor, clearly shown on the CC. North-South were an occasional partnership. South did not advise West of the failure to alert before the opening bid, and he fully accepted that he should have done so. West led the king of hearts which South won and led a spade, both at the speed of light. West ducked smoothly, but declarer guessed to put in the king and claimed. West argued that ducking was only wrong if South had ten clubs, a distributional constraint for a natural 2NT bid which would surely have been alerted. South intended to open 2NT and then jump to 5C to show a good 5C opener. South in the other room just opened 5C ending the auction and scoring +600.
The TD decided that North-South should get -500 for 6NT doubled - the score if the infraction had not occurred. West, however, had committed a serious error under 12.8.3 of the White Book: "Blatantly ridiculous calls or plays, such as ducking the setting trick against a slam," and they kept the bad result attributed to the serious error, which was the difference between -1680 and +500. The former lost 14 IMPs and the latter would have won 15 IMPs, so the serious error cost 29 IMPs. So the net effect was -14 IMPs for East-West. West was not a happy bunny, but the TD said his hands were tied as West's play was given in the WB as an example of a serious error. In fact he had ducked the setting two tricks, the TD pointed out. West responded that he though the TD was "quackers" and it all got out of hand.