dicey, difficult, daunting, complicated, tough, problematic, problematical, touchy, perilous, slippery, delicate, treacherous, challenging, easy, ticklish, bumpy, thorny, troublesome, straightforward, frustrating, awkward, sticky, confusing, crucial, rough, messy, arduous, fiddly, iffy, nettlesome, dangerous, knotty, sticky wicket, risky, unpredictable, impossible, rocky, adept, vexing, tortuous, interesting, tedious, prickly, chancy, stressful, canny, laborious, hard, precarious, perplexing, slippy, plain sailing, clever, good, murky, advantageous, uncomfortable, useful, contentious, changeable, tempting, scary, cumbersome, handy, helpful, fickle, important, inconvenient, unforgiving, costly, inexact, bewildering, dodgy, hairy, clumsy, careful, unchartered, fortuitous, bad, windy, tricksy, baffling, intriguing, tense, nervy, deft, simplest, complex, cagey, strange, intricate, crafty, unorthodox, unfamiliar, shaky, grueling, rutty, imprecise, unpalatable, wonky, maddening, quickest, trickiest, trickier, easiest, debated, debatable, puzzling

computationally, gamely

artful, catchy, crafty, cunning, difficult, dodgy, foxy, guileful, hard, knavish, slick, slippery, sly, tricksy, untrustworthy, untrusty, wily