[Note: This kind of puzzles, published in the dailiy newspaer USA Today (2024) is due to Davide Coppo]

10 Puzzles

• Puzzle 1
• Puzzle 2
• Puzzle 3
• Puzzle 4
• Puzzle 5
• Puzzle 6
• Puzzle 7
• Puzzle 8
• Puzzle 9
• Puzzle 10

10 Harder Puzzles

• Harder Problem 1
• Harder Problem 2
• Harder Problem 3
• Harder Problem 4
• Harder Problem 5
• Harder Problem 6
• Harder Problem 7
• Harder Problem 8
• Harder Problem 9
• Harder Problem 10