unknown

Five Intersecting Tetrahedra

Five Intersecting Tetrahedra

Assembly / Wood

Designer: unknown

Maker: John Devost

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Fixer Shack Spil

Fixer Shack Spil

Designer: unknown

Maker: Ole Poul Pederson

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Flabber Floovers - Duress

Flabber Floovers - Duress

Disassembly / Wood

Designer: unknown

Maker: Family Games America

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Solved

Flabber Floovers - Yank

Flabber Floovers - Yank

Disassembly / Wood

Designer: unknown

Maker: Family Games America

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Solved

Flashdash

Electronic / Plastic

Designer: unknown

Maker: Nesstoy

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Solved

Flat Pack

Designer: unknown

Maker: unknown

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Solved

Flip-A-Roo

Dexterity / Paperboard

Designer: unknown

Maker: Smethport Specialty Co.

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Solved

Flower

2D Symmetry / PLA

Designer: unknown

Maker: Ginosergio

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Solved

Flummox

Interlocking / Wood

Designer: unknown

Maker: unknown

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FlyMouse Shaped Magic Cube

FlyMouse Shaped Magic Cube

Sequential Movement / Plastic

Designer: unknown

Maker: Dian Sheng

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Solved

Foldology

Unknown / Paper

Designer: unknown

Maker: Brain Lit

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Solved

Foldology 2

Unknown / Paper

Designer: unknown

Maker: Brain Lit

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Solved

Foldology 3

Unknown / Paper

Designer: unknown

Maker: Brain Lit

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Solved

Fortress interlocking puzzle

Fortress interlocking puzzle

Designer: unknown

Maker: Zoyo

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Solved

Fortune Cat

Sequential Movement / Plastic

Designer: unknown

Maker: Yong Jun Toys

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Solved

Four T

Logic / Plastic

Designer: unknown

Maker: unknown

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Solved

Four T

2D Packing / Acrylic

Designer: unknown

Maker: Tom Sun

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Four Wire Puzzles Starter's set

Four Wire Puzzles Starter's set

Disentanglement / Metal

Designer: unknown

Maker: Ben Meldrum

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Foursquare

Designer: unknown

Maker: Zoyo

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Free Willy

Disentanglement / Metal

Designer: unknown

Maker: unknown

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French Puzzle Brain

French Puzzle Brain

Designer: unknown

Maker: Allan Boardman

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Solved

Frog Slide Puzzle (2x4)

Frog Slide Puzzle (2x4)

Sequential Movement / Plastic

Designer: unknown

Maker: unknown

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Solved

From the 4 Equal Parts

From the 4 Equal Parts

Silhouette Puzzle / Wood

Designer: unknown

Maker: Wil Strijbos (Streetwise)

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Solved

Fruit cube - Apple

Fruit cube - Apple

Sequential Movement / Plastic

Designer: unknown

Maker: Fan Xin

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Solved