This puzzle contains 13 polyomino pieces. Twelve of them are hexominos made from six connected squares, while one piece is a pentomino made from only five squares.
Your task is simple:
Find the one piece that is different.
Play Online
Study the shapes carefully and click the piece you think is the intruder.
Choose correctly and the puzzle will confirm your answer. If your first choice is wrong, keep looking and try again.
Want another challenge? Select New Puzzle to load a different randomly selected puzzle.
Print the Puzzle
You can also print the puzzle and solve it away from the screen.
Use the print button beneath the puzzle to create a printer-friendly version. The solution can be revealed separately when you are ready to check your answer.
These puzzles are great for visual recognition, concentration and careful shape comparison.
