Logica Puzzles Art. 15+16 Puzzle - 2 Puzzles in 1 - Slide Fifteen - Math Puzzle in Fine Wood - Difficulty 2/6 Medium + 4/6 Extreme

Game 1: place all 16 square to obtain a sum of 34 in all direction: 4 horizontal lines, 4 vertical lines, 2 diagonals. Game 2: classic 15 puzzle The

Slide 15 Wood Puzzle, Brain Teaser, Wood Brain Teaser, Wooden Brain Teaser Puzzle

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Logica Puzzles Art. 15+16 Puzzle - 2 Puzzles in 1 - Slide Fifteen - Ma – ToysCentral - Europe

15+16 PUZZLE - Logica Puzzles

15 Puzzle -- from Wolfram MathWorld

15 Puzzle - Wikipedia

Logica Puzzles Art. 15+16 Puzzle - 2 Puzzles in 1 - Slide Fifteen - Math Puzzle in Fine Wood - Difficulty 2/6 Medium + 4/6 Extreme : Toys

Logica Puzzles Art. 15+16 Puzzle - 2 Puzzles in 1 - Slide Fifteen - Math Puzzle in Fine Wood - Difficulty 2/6 Medium + 4/6 Extreme

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Logica Puzzles Art. 15+16 Puzzle - 2 Puzzles in 1 - Number Challenge - Math puzzle - Slide Fifteen - Euclide Collection

15 Puzzle -- from Wolfram MathWorld

Slide 15 Wood Puzzle, Brain Teaser, Wood Brain Teaser, Wooden Brain Teaser Puzzle

Logica Puzzles Art. 15+16 Puzzle - 2 Puzzles in 1 - Slide Fifteen - Ma – ToysCentral - Europe