# Rule of 11 in Bridge

The Rule of 11 is a technique you can use for calculating the location of unseen cards in the suit that has been led when the opening lead was the 4th highest.

- Subtract the value of the card led from 11 to give the total number of higher cards
- Count the number of higher cards you can see in dummy and your own hand
- Declarer will have the rest!

You are South and partner leads the ♦7 against West's 3NT contract. How can you use the rule of 11?

**Step 1 - Subtract the value of the card led from 11**

Partner leads the 7 so you subtract from 11 which leaves 4.

**Step 2 - Count the number of higher cards you can see**

You can see three cards higher than the 7 in your hand and one card higher than the 7 in dummy for a total of 4.

**Step 3 - Calculate how many cards declarer has that are higher than the one led**

There are 4 cards higher than the 7 in your hand, dummy and in declarer's hand. Three are in your hand, 1 is in dummy. That means declarer has no cards higher than the 7. You can let partner's 7 hold the trick and keep your Ace to cover dummy's K.

# 4th highest leads and the rule of 11

The rule of 11 only works when the opening lead was 4th highest. Let's take a look at a hand to see what that means.