E. The Score

As a reminder of vulnerability in Four-Deal Bridge, two intersecting diagonal lines should be drawn near the top of the score pad, as follows:

The numeral "1" should be inserted in that one of the four angles thus formed that faces the first dealer. After play of the first deal is completed, "2" is inserted in the next angle in clockwise rotation, facing the dealer of the second deal. The numerals "3" and "4" are subsequently inserted at the start of the third and fourth deals, respectively, each in the angle facing the current dealer.

A correctly numbered diagram is conclusive as to vulnerability. These is no redress for a bid influenced by the scorer's failure to draw the diagram or for an error or omission in inserting a numeral or numerals in the diagram. Such error or omission should, upon discovery, be immediately corrected and the deal or deals should be scored or rescored as though the diagram and the number or numbers thereon had been properly inserted.