31. Ben asked me, grinning fiendishly as Willie Skokan and Leonardo took hold of the canvas. 32. But the task proved fiendishly complicated. 33. Water is fiendishly difficult to manage. 34. Fiendishly , racing has contrived three races of differing distances within five weeks in three different states.35. These costly boxes run Solaris, Sun's version of the fiendishly complicated Unix operating system. 36. But a test that makes good sense in theory can prove fiendishly difficult to use in practice. 37. I grin fiendishly , envisioning the hundreds of points that I am racking up on the scoreboard. 38. Also, writes violinist and composer David Matthews, " it is fiendishly difficult to play ." 39. A similar " TechCrunch " article characterized the booking systems as " fiendishly complex ." 40. By 1984 it was known that the disease's cause was a fiendishly elusive virus called HIV.