NRICH: 9 Hole Light Golf

We think this 3×3 version of the game is often harder than the 5×5 version. Do you agree? If so, why do you think that might be?

Age 5 to 18

Can you convince yourself that it is possible to reach every possible arrangement of lights?

We think this 3×3 version of the game is often strangely harder than the 5×5 version, which can be found here. Why might that be true?


Deductive Reasoning & Logical Thinking
K-6, Middle School, High School

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NRICH (University of Cambridge)

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Online Game
Tutorial

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