Rule of 11 in Bridge
- 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.