1
2
3
4
Combination
1-2-3-4 of Berend Jan van der Zwaag
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1
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Does it contain two non-4-touching dominoes? (Touching at the corners is allowed.) |
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2
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Does it fit together with a heptomino in a 3x4 rectangle? |
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3
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Does it fit together with two copies of another pentomino in a 3x5 rectangle? |
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4
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Does it have line-symmetry? |
| F | I | L | N | P | T | U | V | W | X | Y | Z | |
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1
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N | Y | Y | Y | N | N | Y | Y | Y | N | N | Y |
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2
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N | N | Y | N | Y | Y | Y | Y | N | N | Y | N |
|
3
|
N | Y | Y | N | N | Y | N | Y | N | Y | Y | Y |
|
4
|
N | Y | N | N | N | Y | Y | Y | Y | Y | N | N |
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Solution 1 |
Solution 2 |
Solution 3  |
Solution 4
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