Number Probe
Each player tries to guess the numbers in a square by asking questions about combinations of themDescription
One player, the Chooser, writes four numbers in a 2x2 square, and the other player, the Guesser, tries to guess them.At each turn the Guesser names an operation on at least two of the numbers, and the Chooser has to give the answer.
For example, the Guesser could ask for "the difference between the top two numbers", or "the product of the two numbers on the left", or "the sum of all four numbers".
Alternatively the Guesser can make a direct guess at the four numbers.
Example
As an example, if the Chooser had thought of:
the questions might proceed as follows:
Guesser: "The top two numbers multiplied together" - Chooser: "12"
Guesser: "The bottom two numbers multiplied together" - Chooser: "42"
Guesser: "The top two numbers added together" - Chooser: "7"
Guesser: "The two numbers on the left added together" - Chooser: "11"
Guesser: "I think the numbers are 3, 4, 7, 6". - Chooser: "Correct!"