By Steve Keating AUGUSTA, Georgia, April 5 (Reuters) - Rory McIlroy will do jigsaw puzzles to kill the time before the opening round at the Masters on Thursday, but finding the final piece to a career grand slam is upper-most on the Northern Irishman's mind. "I have many different ways to pass my time," world number three McIlroy joked on Tuesday, as he pondered teeing off in the final threesome in the opening round at 2.01PM ET. "We are working on another jigsaw puzzle and we brought Monopoly to the house that we're renting, so there's a lot of really fun stuff going on." There will be no games come Thursday, however, when McIlroy will launch his bid to complete the rarest of golf feats. More...