Double Square (a.k.a Square Me, Five Block Puzzle, Madagascar Madness)" - Copyright J. A. Storer
Gabriel Fernandes' Puzzle Collection: Double Squared
Wooden Puzzles - The Double Square | Bartl GmbH
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Wooden Puzzles - The Double Square | Bartl GmbH
Double Square Puzzle - make a 4 pc then a 5 pc square
Double Square | Wood Puzzles | Puzzle Master Inc
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