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New Scientist puzzle #56: Diffy squares

New Scientist puzzle #56: Diffy squares

A puzzle based on subtraction. Can you solve this tricky Diffy square? Plus solution to puzzle #55

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New Scientist puzzle #55: Ton up

New Scientist puzzle #55: Ton up

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New Scientist puzzle #54: Pyramid of possibilities

New Scientist puzzle #54: Pyramid of possibilities

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New Scientist puzzle #53: Painting by numbers

New Scientist puzzle #53: Painting by numbers

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New Scientist puzzle #52: Bus change

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Puzzle #51: Birthday candles

Puzzle #51: Birthday candles

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New Scientist puzzle #50: Crossing the river

New Scientist puzzle #50: Crossing the river

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New Scientist puzzle #49: The tree in the snow globe

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New Scientist puzzle #48: Seeing red

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New Scientist puzzle #47: Geometra’s tomb

Can you find a lost tomb in the square desert of Angula? Plus answers to puzzle #46

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New Scientist puzzle #46: Pi-thagoras

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New Scientist puzzle #45: Beetles on a clothes line

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New Scientist puzzle #44: Elevator pitch

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New Scientist puzzle #43: dividing Grandma's field

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