problematical vs elusive

problematical and elusive both are adjectives.

Word	Noun	Adjective	Verb	Adverb
problematical	No	Yes	No	No
elusive	No	Yes	No	No

As adjectives, problematical and elusive are synonyms defined as:

problematical and elusive: making great mental demands; hard to comprehend or solve or believe

Other synonyms of problematical include baffling, knotty, problematic, tough.

problematical (adjective)	elusive (adjective)
making great mental demands; hard to comprehend or solve or believe	skillful at eluding capture
open to doubt or debate	making great mental demands; hard to comprehend or solve or believe
	difficult to detect or grasp by the mind or analyze
	difficult to describe