| Clue | Length | Answer |
|---|---|---|
| String theory so difficult a problem? | 6 letters | knotty |
| ||
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SubmitLikely related crossword puzzle clues
- Hard to saw, as some pine
- Problematic
- Stubborn, as a problem
- Intricate
- Full of difficulties
- Labyrinthine
- Difficult - intricate
- String theory so difficult a problem?
- Extremely difficult
- Complicated, like a sandpiper?
- Gnarled - complicated
- Convoluted
- Tricky to negotiate -- like a reef?
- Wood is often hard
- Extremely intricate
- Very difficult – complex
- Complex
- Like some pine wood
- ... pine: paneling wood
- Pine
- Complicated
- complicated part of book, not typical
- complex tie to your leaders
- Tricky, describing wading bird?
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- Tough to figure out
- Gnarled, as a tree trunk
- Puzzling
- Like some pines
- Kind of decorative pine
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- Kind of pine
- Like pine paneling
- Tangled up
- tangled — snarled
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- Full of complications
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- Like pine panelling
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- Such a problem as granny might become?
- Wicked
- Complicated, as a problematic tree?
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- Intricately tangled
- Tangled into a mass
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