Put-together

Hilbert

Put-together / Wood

Designer: Abhishek Ruikar

Maker: Abhishek Ruikar

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Solved

Hill's American Geometrical Prize Puzzle

Hill's American Geometrical Prize Puzzle

Put-together / Wood

Designer: Nicholas Mason

Maker: Walter Hoppe

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Hlavolam Kroužky

Hlavolam Kroužky

Put-together / Wood

Designer: unknown

Maker: unknown

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Holey Squares Cube

Holey Squares Cube

Put-together / Wood

Designer: Trevor Wood

Maker: John Devost

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Hurly Burly

Put-together / ABS

Designer: Oskar van Deventer

Maker: George Miller

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Identica_L

Put-together / Plastic

Designer: Kitazawa Tadao

Maker: unknown

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Identical Twins

Identical Twins

Put-together / Wood

Designer: Osanori Yamamoto

Maker: Tom Lensch

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Solved

Imaginary Cube

Designer: Hideki Tsuiki

Maker: Hideki Tsuiki

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Inelegant N's

Put-together / Wood

Designer: Haym Hirsh

Maker: Wood Wonders (Brian Menold)

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Solved

Inelegant Soma

Put-together / Wood

Designer: Haym Hirsh

Maker: Wood Wonders (Brian Menold)

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Solved

Inelegant Squares (Mini version)

Inelegant Squares (Mini version)

Put-together / Wood

Designer: Haym Hirsh

Maker: Wood Wonders (Brian Menold)

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Interlocking Checkerboard

Interlocking Checkerboard

Designer: Stewart Coffin

Maker: John Devost

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IPP 42 Puzzle

Put-together / Wood

Designer: Joseph Turner

Maker: Joseph Turner

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IPP34 In Square

IPP34 In Square

Put-together / MDF

Designer: Tsugumitsu Noji

Maker: Osho/Puzzle-in

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Isaacs's Iris

Put-together / Acrylic

Designer: Donald Knuth

Maker: George Miller

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Isotrap

Put-together / Acrylic

Designer: Alexander Magyarics

Maker: NothingYetDesigns

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Solved

JHC (Just Honoring Conway)

JHC (Just Honoring Conway)

Put-together / Wood

Designer: Wei-Hwa Huang

Maker: Wood Wonders (Brian Menold)

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Solved

Join the Club

Designer: Scott Elliott

Maker: Scott Elliott

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Solved

Just Have Patience

Just Have Patience

Put-together / Wood

Designer: unknown

Maker: Mr Puzzle (Brian Young)

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Solved

K-Dron

Put-together / Plastic

Designer: Janusz J. Kapusta

Maker: unknown

Kaikakuban

Put-together / Wood

Designer: Takeyuki Endo

Maker: Takeyuki Endo

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Kaleidoscope Cube

Kaleidoscope Cube

Put-together / PLA

Designer: George Sicherman

Maker: Wood Wonders (Brian Menold)

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Kauri Coaster Puzzle Cube

Kauri Coaster Puzzle Cube

Put-together / Wood

Designer: unknown

Maker: Romeyn Woodcrafts Ltd

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Kepler

Put-together / Metal

Designer: Felix Ure

Maker: Felix Ure

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Solved