Click the duplicate shape.
Heptomino Puzzle #1173
11 11 11 11 11 11 11 15 15 15 15 15 15 15 8 8 8 8 8 8 8 19 19 19 19 19 19 19 30 30 30 30 30 30 30 6 6 6 6 6 6 6 51 51 51 51 51 51 51 57 57 57 57 57 57 57 37 37 37 37 37 37 37 3 3 3 3 3 3 3 78 78 78 78 78 78 78 10 10 10 10 10 10 10 21 21 21 21 21 21 21 82 82 82 82 82 82 82 68 68 68 68 68 68 68 4 4 4 4 4 4 4 42 42 42 42 42 42 42 35 35 35 35 35 35 35 10 10 10 10 10 10 10 1 1 1 1 1 1 1 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 11 12 13 14 c4d4u.one
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A4
US Letter
A5
A3
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Click the duplicate shape.
Heptomino Puzzle #3367
78 78 78 78 78 78 78 28 28 28 28 28 28 28 95 95 95 95 95 95 95 24 24 24 24 24 24 24 69 69 69 69 69 69 69 3 3 3 3 3 3 3 21 21 21 21 21 21 21 35 35 35 35 35 35 35 11 11 11 11 11 11 11 33 33 33 33 33 33 33 26 26 26 26 26 26 26 32 32 32 32 32 32 32 37 37 37 37 37 37 37 39 39 39 39 39 39 39 93 93 93 93 93 93 93 32 32 32 32 32 32 32 18 18 18 18 18 18 18 23 23 23 23 23 23 23 30 30 30 30 30 30 30 15 15 15 15 15 15 15 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 11 12 13 14 c4d4u.one
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A4
US Letter
A5
A3
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Click the duplicate shape.
Heptomino Puzzle #319
3 3 3 3 3 3 3 30 30 30 30 30 30 30 17 17 17 17 17 17 17 16 16 16 16 16 16 16 74 74 74 74 74 74 74 74 74 74 74 74 74 74 54 54 54 54 54 54 54 93 93 93 93 93 93 93 10 10 10 10 10 10 10 77 77 77 77 77 77 77 82 82 82 82 82 82 82 79 79 79 79 79 79 79 52 52 52 52 52 52 52 2 2 2 2 2 2 2 66 66 66 66 66 66 66 36 36 36 36 36 36 36 81 81 81 81 81 81 81 23 23 23 23 23 23 23 76 76 76 76 76 76 76 6 6 6 6 6 6 6 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 11 12 13 14 c4d4u.one
Show Solution
A4
US Letter
A5
A3
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Click the duplicate shape.
Heptomino Puzzle #2698
37 37 37 37 37 37 37 3 3 3 3 3 3 3 34 34 34 34 34 34 34 2 2 2 2 2 2 2 60 60 60 60 60 60 60 95 95 95 95 95 95 95 60 60 60 60 60 60 60 12 12 12 12 12 12 12 28 28 28 28 28 28 28 13 13 13 13 13 13 13 21 21 21 21 21 21 21 9 9 9 9 9 9 9 100 100 100 100 100 100 100 15 15 15 15 15 15 15 79 79 79 79 79 79 79 47 47 47 47 47 47 47 30 30 30 30 30 30 30 18 18 18 18 18 18 18 82 82 82 82 82 82 82 5 5 5 5 5 5 5 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 11 12 13 14 c4d4u.one
Show Solution
A4
US Letter
A5
A3
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Click the duplicate shape.
Heptomino Puzzle #014
22 22 22 22 22 22 22 60 60 60 60 60 60 60 12 12 12 12 12 12 12 8 8 8 8 8 8 8 28 28 28 28 28 28 28 36 36 36 36 36 36 36 2 2 2 2 2 2 2 27 27 27 27 27 27 27 79 79 79 79 79 79 79 29 29 29 29 29 29 29 15 15 15 15 15 15 15 16 16 16 16 16 16 16 49 49 49 49 49 49 49 106 106 106 106 106 106 106 10 10 10 10 10 10 10 92 92 92 92 92 92 92 37 37 37 37 37 37 37 29 29 29 29 29 29 29 17 17 17 17 17 17 17 9 9 9 9 9 9 9 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 11 12 13 14 c4d4u.one
Show Solution
A4
US Letter
A5
A3
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Heptomino Puzzle #2849
28 28 28 28 28 28 28 59 59 59 59 59 59 59 54 54 54 54 54 54 54 15 15 15 15 15 15 15 14 14 14 14 14 14 14 6 6 6 6 6 6 6 39 39 39 39 39 39 39 102 102 102 102 102 102 102 73 73 73 73 73 73 73 4 4 4 4 4 4 4 19 19 19 19 19 19 19 2 2 2 2 2 2 2 67 67 67 67 67 67 67 36 36 36 36 36 36 36 87 87 87 87 87 87 87 61 61 61 61 61 61 61 9 9 9 9 9 9 9 60 60 60 60 60 60 60 36 36 36 36 36 36 36 7 7 7 7 7 7 7 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 11 12 13 14 c4d4u.one
Show Solution
A4
US Letter
A5
A3
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Click the duplicate shape.
Heptomino Puzzle #4029
15 15 15 15 15 15 15 3 3 3 3 3 3 3 44 44 44 44 44 44 44 1 1 1 1 1 1 1 5 5 5 5 5 5 5 27 27 27 27 27 27 27 65 65 65 65 65 65 65 54 54 54 54 54 54 54 32 32 32 32 32 32 32 14 14 14 14 14 14 14 37 37 37 37 37 37 37 26 26 26 26 26 26 26 98 98 98 98 98 98 98 11 11 11 11 11 11 11 6 6 6 6 6 6 6 54 54 54 54 54 54 54 75 75 75 75 75 75 75 60 60 60 60 60 60 60 17 17 17 17 17 17 17 2 2 2 2 2 2 2 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 11 12 13 14 c4d4u.one
Show Solution
A4
US Letter
A5
A3
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Click the duplicate shape.
Heptomino Puzzle #1035
34 34 34 34 34 34 34 33 33 33 33 33 33 33 52 52 52 52 52 52 52 2 2 2 2 2 2 2 77 77 77 77 77 77 77 8 8 8 8 8 8 8 1 1 1 1 1 1 1 14 14 14 14 14 14 14 103 103 103 103 103 103 103 49 49 49 49 49 49 49 51 51 51 51 51 51 51 56 56 56 56 56 56 56 5 5 5 5 5 5 5 21 21 21 21 21 21 21 26 26 26 26 26 26 26 16 16 16 16 16 16 16 18 18 18 18 18 18 18 38 38 38 38 38 38 38 10 10 10 10 10 10 10 8 8 8 8 8 8 8 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 11 12 13 14 c4d4u.one
Show Solution
A4
US Letter
A5
A3
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Click the duplicate shape.
Heptomino Puzzle #3024
6 6 6 6 6 6 6 98 98 98 98 98 98 98 37 37 37 37 37 37 37 38 38 38 38 38 38 38 77 77 77 77 77 77 77 75 75 75 75 75 75 75 34 34 34 34 34 34 34 30 30 30 30 30 30 30 33 33 33 33 33 33 33 47 47 47 47 47 47 47 56 56 56 56 56 56 56 87 87 87 87 87 87 87 27 27 27 27 27 27 27 106 106 106 106 106 106 106 3 3 3 3 3 3 3 99 99 99 99 99 99 99 82 82 82 82 82 82 82 30 30 30 30 30 30 30 5 5 5 5 5 5 5 11 11 11 11 11 11 11 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 11 12 13 14 c4d4u.one
Show Solution
A4
US Letter
A5
A3
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Click the duplicate shape.
Heptomino Puzzle #2536
9 9 9 9 9 9 9 2 2 2 2 2 2 2 90 90 90 90 90 90 90 15 15 15 15 15 15 15 5 5 5 5 5 5 5 20 20 20 20 20 20 20 79 79 79 79 79 79 79 1 1 1 1 1 1 1 41 41 41 41 41 41 41 22 22 22 22 22 22 22 34 34 34 34 34 34 34 3 3 3 3 3 3 3 35 35 35 35 35 35 35 99 99 99 99 99 99 99 100 100 100 100 100 100 100 41 41 41 41 41 41 41 70 70 70 70 70 70 70 27 27 27 27 27 27 27 17 17 17 17 17 17 17 4 4 4 4 4 4 4 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 11 12 13 14 c4d4u.one
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A4
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Load 10 New Puzzles
Explore a set of ten randomly selected heptomino duplicate puzzles.
Each puzzle contains 20 heptomino pieces. Nineteen of them belong to different shape families, while one shape appears twice. Your task is to compare the pieces carefully and identify the duplicate in every puzzle.
Solve All 10 Puzzles Online
You can play through the complete puzzle pack directly on the page.
Each puzzle is interactive, so you can click or tap a piece to test your answer. If you need help, the solution can be revealed at any time.
Matching heptominoes may appear in different orientations, which can make the duplicate harder to recognize. Look closely at the outlines, corners and branches of each shape.
If you want another challenge, use Load 10 New Puzzles to generate a fresh random set from the available collection.
Print the Full Heptomino Puzzle Pack
Use Print Puzzle Set to create a printable version containing all ten puzzles in one collection.
The solutions are placed separately, so the puzzle pages can be printed, saved or shared without showing the answers too early.
This makes the set suitable for home use, classroom activities, puzzle collections, travel or quiet offline puzzle time.
Create New Random Puzzle Sets Anytime
Because the selection is random, you can generate a different group of ten puzzles whenever you like.
That makes it easy to come back for another printable puzzle pack, build a fresh collection for later, or challenge someone else with a new set of heptomino duplicate puzzles.
