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91av puzzle #48: Seeing red

The traffic lights are green for 10 seconds. Should you cycle faster to get through or slow down? Plus answers to puzzle #47

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91av puzzle #47: Geometra’s tomb

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91av puzzle #46: Pi-thagoras

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91av puzzle #45: Beetles on a clothes line

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91av puzzle #44: Elevator pitch

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91av puzzle #43: dividing Grandma's field

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91av puzzle #42: The card conundrum

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91av puzzle #41: Hen party dorm

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91av puzzle #40: Light bulb moment

91av puzzle #40: Light bulb moment

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91av festive puzzles #35 to #39: A bunch of brain teasers

91av festive puzzles #35 to #39: A bunch of brain teasers

Six puzzles to test every type of brain, from moving matchsticks to square numbers to the 12 days of Christmas. Includes answers, and the solution to puzzle #34

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91av puzzle #34: Ant on a tetrahedron

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91av puzzle #33: The mountain pass

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91av puzzle #32: Rearranging books

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91av puzzle #31: Three hats

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