Everybody's got something that will seem like an insurmountable challenge.

These obstacles by no means present insurmountable challenges to green libraries.

The wine list is huge, an insurmountable challenge for me but another's utopia.

If making Buicks is not an insurmountable challenge, selling them here may be.

Africa's ethnic complexity, however, makes doing any better on this score an almost insurmountable challenge.

Yet in this very morseling lies the nearly insurmountable challenge.

"That would not be an insurmountable challenge," one Bush policy adviser said late Friday.

Still, the two stealthy visitors did not find it an insurmountable challenge.

In my memory, charlotte russe lives as an insurmountable challenge.

It is not an insurmountable challenge, and perseverance will prove rewarding.