This problem baffles me.
Kono mondai ni wa oteage da.
this (something or someone close to the speaker (including the speaker), or ideas expressed by the speaker)
question (e.g. on a test); problem; problem (e.g. societal, political); question; issue; subject (e.g. of research); case; matter; question (i.e. doubt); public discussion; controversy; trouble; problem; inconvenience; difficulty
at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
all over; given in; given up hope; bringing to knees; throwing up one's hands
be; is; indicates past or completed action; indicates light imperative