In that case, there was little high-card strength left for West, who had opened the bidding and doubled.

West should realize that the double cannot be based on high-card strength.

He jumped to six clubs with the thought that North's high-card strength was likely to be in the red suits.

He quickly reached four hearts, and knew from the bidding that the high-card strength was on his right.

This showed some high-card strength and induced South to continue to five clubs.

But he had the advantage of knowing that all the missing high-card strength was on his right.

Both his opponents had shown limited high-card strength, so there was little risk.

He knew from the bidding that most of the missing high-card strength was on his left.

It requests partner to take positive action with high-card strength outside that suit.

He began with the knowledge that nearly all the missing high-card strength was on his right.