The compatibility problem is to find a figure that can be tiled with each of a set of polyforms. Polyomino compatibility has been widely studied since 1992, when Pablo Coll first posed and studied the problem for pentominoes.
Here I show minimal known compatibilities for a single pentomino and a pair of other pentominoes, using at least one copy of each pentomino of the pair.
| F+I | L: 3 | N: 4 | P: 3 | T: 4 | U: 4 | V: 6 | W: 4 | X: 12 | Y: 3 | Z: 5 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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| F+L | I: 4 | N: 3 | P: 3 | T: 4 | U: 3 | V: 4 | W: 3 | X: 4 | Y: 3 | Z: 3 | ||
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| F+N | I: 4 | L: 2 | P: 2 | T: 4 | U: 4 | V: 3 | W: 3 | X: 4 | Y: 3 | Z: 4 | ||
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| F+P | I: 4 | L: 2 | N: 2 | T: 3 | U: 4 | V: 3 | W: 2 | X: 5 | Y: 2 | Z: 3 | ||
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| F+T | I: 6 | L: 3 | N: 3 | P: 2 | U: 4 | V: 4 | W: 3 | X: 3 | Y: 2 | Z: 3 | ||
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| F+U | I: 6 | L: 3 | N: 3 | P: 3 | T: 4 | V: 3 | W: 3 | X: 6 | Y: 3 | Z: 3 | ||
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| F+V | I: 4 | L: 4 | N: 3 | P: 2 | T: 4 | U: 4 | W: 4 | X: 8 | Y: 3 | Z: 4 | ||
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| F+W | I: 6 | L: 3 | N: 3 | P: 3 | T: 3 | U: 4 | V: 4 | X: 3 | Y: 3 | Z: 4 | ||
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| F+X | I: 10 | L: 4 | N: 4 | P: 4 | T: 3 | U: 7 | V: 6 | W: 3 | Y: 2 | Z: 3 | ||
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| F+Y | I: 3 | L: 3 | N: 3 | P: 2 | T: 3 | U: 3 | V: 3 | W: 3 | X: 3 | Z: 3 | ||
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| F+Z | I: 6 | L: 3 | N: 4 | P: 3 | T: 3 | U: 4 | V: 4 | W: 3 | X: 3 | Y: 2 | ||
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| I+L | F: 3 | N: 4 | P: 2 | T: 4 | U: 3 | V: 4 | W: 4 | X: 16 | Y: 3 | Z: 3 | ||
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| I+N | F: 3 | L: 4 | P: 3 | T: 4 | U: 4 | V: 4 | W: 4 | X: 16 | Y: 3 | Z: 3 | ||
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| I+P | F: 4 | L: 3 | N: 3 | T: 4 | U: 4 | V: 3 | W: 4 | X: 6 | Y: 3 | Z: 3 | ||
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| I+T | F: 6 | L: 4 | N: 4 | P: 3 | U: 6 | V: 4 | W: 6 | X: 16 | Y: 3 | Z: 5 | ||
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| I+U | F: 4 | L: 2 | N: 4 | P: 3 | T: 4 | V: 6 | W: 4 | X: ? | Y: 3 | Z: 3 | ||
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| I+V | F: 6 | L: 4 | N: 4 | P: 3 | T: 6 | U: 6 | W: 6 | X: ? | Y: 2 | Z: 8 | ||
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| I+W | F: 4 | L: 4 | N: 4 | P: 3 | T: 8 | U: 4 | V: 6 | X: ? | Y: 4 | Z: 9 | ||
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| I+X | F: 6 | L: 6 | N: 10 | P: 5 | T: 10 | U: 10 | V: 12 | W: 10 | Y: 3 | Z: 8 | ||
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| I+Y | F: 3 | L: 3 | N: 4 | P: 2 | T: 4 | U: 4 | V: 4 | W: 4 | X: 3 | Z: 3 | ||
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| I+Z | F: 4 | L: 2 | N: 4 | P: 3 | T: 4 | U: 6 | V: 6 | W: 6 | X: ? | Y: 3 | ||
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| L+N | F: 2 | I: 4 | P: 2 | T: 3 | U: 4 | V: 3 | W: 4 | X: 16 | Y: 2 | Z: 4 | ||
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| L+P | F: 3 | I: 3 | N: 3 | T: 4 | U: 3 | V: 3 | W: 3 | X: 6 | Y: 3 | Z: 3 | ||
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| L+T | F: 3 | I: 4 | N: 2 | P: 3 | U: 3 | V: 3 | W: 4 | X: 6 | Y: 3 | Z: 3 | ||
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| L+U | F: 3 | I: 3 | N: 3 | P: 2 | T: 3 | V: 4 | W: 4 | X: 96 | Y: 4 | Z: 3 | ||
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| L+V | F: 3 | I: 4 | N: 3 | P: 3 | T: 3 | U: 3 | W: 3 | X: 44 | Y: 3 | Z: 4 | ||
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| L+W | F: 3 | I: 4 | N: 4 | P: 3 | T: 4 | U: 4 | V: 3 | X: 80 | Y: 3 | Z: 4 | ||
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| L+X | F: 3 | I: 5 | N: 4 | P: 4 | T: 4 | U: 4 | V: 6 | W: 5 | Y: 3 | Z: 7 | ||
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| L+Y | F: 2 | I: 4 | N: 3 | P: 2 | T: 3 | U: 2 | V: 4 | W: 4 | X: 4 | Z: 4 | ||
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| L+Z | F: 3 | I: 3 | N: 4 | P: 3 | T: 3 | U: 3 | V: 4 | W: 4 | X: 48 | Y: 3 | ||
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| N+P | F: 2 | I: 4 | L: 2 | T: 3 | U: 4 | V: 2 | W: 3 | X: 8 | Y: 3 | Z: 4 | ||
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| N+T | F: 3 | I: 4 | L: 3 | P: 2 | U: 4 | V: 3 | W: 4 | X: 6 | Y: 3 | Z: 4 | ||
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| N+U | F: 4 | I: 4 | L: 3 | P: 3 | T: 4 | V: 3 | W: 4 | X: 12 | Y: 3 | Z: 4 | ||
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| N+V | F: 3 | I: 4 | L: 3 | P: 2 | T: 4 | U: 4 | W: 3 | X: 20 | Y: 4 | Z: 4 | ||
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| N+W | F: 3 | I: 4 | L: 4 | P: 3 | T: 4 | U: 4 | V: 3 | X: 8 | Y: 3 | Z: 4 | ||
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| N+X | F: 3 | I: 6 | L: 6 | P: 4 | T: 4 | U: 6 | V: 6 | W: 4 | Y: 3 | Z: 4 | ||
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| N+Y | F: 2 | I: 4 | L: 3 | P: 2 | T: 3 | U: 4 | V: 3 | W: 4 | X: 4 | Z: 4 | ||
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| N+Z | F: 3 | I: 3 | L: 4 | P: 3 | T: 4 | U: 4 | V: 4 | W: 4 | X: 8 | Y: 3 | ||
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| P+T | F: 3 | I: 3 | L: 3 | N: 3 | U: 4 | V: 4 | W: 4 | X: 6 | Y: 2 | Z: 3 | ||
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| P+U | F: 4 | I: 4 | L: 3 | N: 3 | T: 4 | V: 4 | W: 4 | X: 8 | Y: 3 | Z: 4 | ||
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| P+V | F: 3 | I: 3 | L: 3 | N: 2 | T: 4 | U: 3 | W: 4 | X: 8 | Y: 3 | Z: 3 | ||
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| P+W | F: 3 | I: 4 | L: 2 | N: 2 | T: 4 | U: 4 | V: 3 | X: 8 | Y: 4 | Z: 4 | ||
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| P+X | F: 3 | I: 5 | L: 3 | N: 4 | T: 5 | U: 6 | V: 5 | W: 4 | Y: 3 | Z: 5 | ||
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| P+Y | F: 2 | I: 3 | L: 2 | N: 3 | T: 2 | U: 3 | V: 3 | W: 3 | X: 4 | Z: 3 | ||
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| P+Z | F: 3 | I: 3 | L: 3 | N: 3 | T: 3 | U: 4 | V: 4 | W: 3 | X: 6 | Y: 3 | ||
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| T+U | F: 4 | I: 4 | L: 4 | N: 4 | P: 3 | V: 4 | W: 4 | X: 16 | Y: 3 | Z: 2 | ||
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| T+V | F: 4 | I: 4 | L: 4 | N: 3 | P: 2 | U: 4 | W: 6 | X: 6 | Y: 3 | Z: 4 | ||
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| T+W | F: 2 | I: 4 | L: 4 | N: 3 | P: 3 | U: 6 | V: 6 | X: 8 | Y: 3 | Z: 4 | ||
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| T+X | F: 2 | I: 12 | L: 4 | N: 6 | P: 4 | U: 8 | V: 5 | W: 4 | Y: 4 | Z: 6 | ||
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| T+Y | F: 3 | I: 4 | L: 3 | N: 3 | P: 2 | U: 3 | V: 4 | W: 4 | X: 4 | Z: 4 | ||
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| T+Z | F: 2 | I: 6 | L: 4 | N: 4 | P: 4 | U: 5 | V: 4 | W: 6 | X: 8 | Y: 3 | ||
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| U+V | F: 4 | I: 4 | L: 4 | N: 4 | P: 3 | T: 4 | W: 4 | X: ? | Y: 3 | Z: 4 | ||
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| U+W | F: 3 | I: 8 | L: 3 | N: 4 | P: 3 | T: 4 | V: 4 | X: ? | Y: 4 | Z: 6 | ||
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| U+X | F: 4 | I: 3 | L: 4 | N: 4 | P: 4 | T: 6 | V: 4 | W: 4 | Y: 4 | Z: 6 | ||
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| U+Y | F: 3 | I: 4 | L: 3 | N: 4 | P: 3 | T: 4 | V: 4 | W: 2 | X: 4 | Z: 4 | ||
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| U+Z | F: 4 | I: 3 | L: 2 | N: 4 | P: 3 | T: 3 | V: 4 | W: 4 | X: 16 | Y: 4 | ||
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| V+W | F: 4 | I: 4 | L: 4 | N: 2 | P: 3 | T: 4 | U: 4 | X: 76 | Y: 4 | Z: 6 | ||
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| V+X | F: 4 | I: 10 | L: 6 | N: 6 | P: 5 | T: 4 | U: 4 | W: 8 | Y: 4 | Z: 6 | ||
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| V+Y | F: 3 | I: 4 | L: 3 | N: 3 | P: 2 | T: 4 | U: 3 | W: 4 | X: 3 | Z: 4 | ||
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| V+Z | F: 4 | I: 3 | L: 4 | N: 4 | P: 2 | T: 4 | U: 4 | W: 6 | X: 36 | Y: 3 | ||
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| W+X | F: 2 | I: 10 | L: 4 | N: 4 | P: 3 | T: 8 | U: 10 | V: 4 | Y: 4 | Z: 4 | ||
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| W+Y | F: 3 | I: 4 | L: 3 | N: 3 | P: 3 | T: 4 | U: 4 | V: 4 | X: 5 | Z: 4 | ||
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| W+Z | F: 2 | I: 3 | L: 4 | N: 4 | P: 3 | T: 6 | U: 4 | V: 6 | X: 16 | Y: 4 | ||
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| X+Y | F: 3 | I: 3 | L: 4 | N: 4 | P: 4 | T: 4 | U: 4 | V: 3 | W: 5 | Z: 4 | ||
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| X+Z | F: 2 | I: 14 | L: 6 | N: 4 | P: 4 | T: 4 | U: 6 | V: 10 | W: 6 | Y: 4 | ||
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| Y+Z | F: 3 | I: 3 | L: 3 | N: 4 | P: 3 | T: 3 | U: 3 | V: 4 | W: 4 | X: 4 | ||
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Last revised 2020-12-06.