This is the version of Hand of the Month for 3rd October 2019, as written up by Andrew Robson for his Times column, published 24th February 2020. Comparing it to the original, the hands are rotated to make South declarer, and the bidding has been revised, in particular to suppress the opposition's final [unwise] double of the freely-bid slam. Andrew's column reads as follows:

 Bridge   Andrew Robson        

Reader Dave Simmons reports this interesting hand from a Royston Bridge Club teams event, in which North's Michaels bid helped to propel his side to the 19-count slam. 

Plan the play in 6♥ on a diamond lead. [ Click on Show Answer (below) when you've decided. ]
 

[ Bidding notes: ]

2♦ by W —  Not strong enough for 2♣, West contents himself with a weak raise, planning to bid clubs later.

3♦ by N —  Michaels, showing five-five (or longer) in both majors.

5♦ by N —  Clearly, North is going to bid on with his extra shape. His 5♦ bid shows potentially slammy values.

6♥ by S —  South could have a lot less for his 4♥ bid, so accepts the slam try.

Pass  —  East correctly refrains from doubling.

As Simmons eloquently puts it: "Suppose the slam goes one down, non-vulnerable... you gain an extra 50 points; whereas if it makes, declarer makes an extra 230 points (1210 instead of 980).  Odds of roughly 5-1 against the double paying off."

Simmons continues: "In fact, a penalty double can potentially cost a lot more than that. Suppose that the double alerts declarer to a bad trump break, or gives declarer a clue to the winning line. If they now make a contract that would have gone down if passed out quietly, the loss is in fact 1,210 against a gain of 50.  Were you really that confident you'd defeat the slam?"