Sentence examples for problem has puzzled from inspiring English sources

This 'persistence problem' has puzzled scientists for long years [18] [20].

But Zhadanov also provides one of the few technical explanations for the problem, which has puzzled many.

Many times, a problem that has puzzled us will get resolved during meditation.

The problem of speciation has puzzled generations of biologists and is of great significance to a wide variety of fields in biology.

Mr. Gorbachev had "to face up to a difficult problem of domestic politics which has puzzled other nations finding themselves in similar circumstances," Rodric Braithwaite, a former British ambassador to Moscow, wrote in "Afgantsy" (Oxford University Press, 2011), his book on the Soviet intervention based on Communist Party documents.

Kai Nielson has urged the point even more strongly, but something of the sort has puzzled many who contemplate the problem.

The increase has puzzled researchers.

This has puzzled some commentators.

Her tweet has puzzled many.

This has puzzled scientists.

In 2013, Yitang Zhang solved a problem that had puzzled mathematicians for a century.