West's negative double strongly suggested that he held four or five diamonds.
The small chance that East held only three diamonds became even smaller once South showed heart length.
It appeared that West held five diamonds, five spades and one heart.
It would not have been if East had held more than three diamonds.
If West held five diamonds, the deuce was a suit-preference request for a club return.
The bottom left corner holds 3 diamonds, this symbolizes the mineral resources of the country.
The bottom left quarter holds three diamonds, which symbolize the mineral resources of the country.
East's diamond play would have been right if South had held two diamonds and three clubs.
One of them held 11 solid diamonds and the ace-king of clubs.
If South had held three diamonds and one club, the diamond lead would have been the winner.