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Three people reserve three choices

The shared-choices idea also works with larger groups.

Deduction: Restricted triple

GUIDED WALKTHROUGHStep 1 of 3

Three people reserve three choices

Each person has a different drink and snack. These small examples show one idea at a time; some squares will stay empty.

DrinksSnacks
TeaCoffeeJuiceCocoaAppleCrackersBrowniePear
PeopleAda
Ben
Cy
Dee
SnacksApple
Crackers
Brownie
Pear
Look here This step✓ Match× Not a match
The clues
  1. Ada, Ben, and Cy each brought tea, coffee, or juice.
STEP 1

Three people need three different drinks

Ada, Ben, and Cy are restricted to tea, coffee, and juice. None can have cocoa. Each needs a different drink, so those three drinks are all needed.