borrowed from Ely Culbertson
South to make 6NT against any defense.
In his classic Red Book on Play (1934), Ely Culbertson featured this hand as an illustration of potential heinous mismanagement of entries; but the special aspect of this layout went unnoticed apparently by everyone, until it finally was brought to public attention in The Bridge World in 1998.
According to the text, the hapless declarer actually went down two in a
3NT. Whereas any conscious player could
arrange to win the obvious eleven tricks, your mission is to do even better.