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|title= Marbles in a Box | |title= Marbles in a Box | ||
|tagline= In a three-dimensional version of noughts and crosses, how many winning lines can you make? | |tagline= In a three-dimensional version of noughts and crosses, how many winning lines can you make? | ||
|image= | |image=NRICH895.jpg | ||
|content= | |content= | ||
|strategy= | |strategy= | ||