Steve Kerr challenged his Golden State Warriors to ratchet up the intensity to playoff-level. With MVP Stephen Curry leading the way, they responded and looked like the team that cruised through the regular season. Curry scored 21 of his 33 points by halftime, and the Warriors snapped their two-game skid Monday night by routing the Memphis Grizzlies 101-84 to tie the Western Conference semifinals at 2-2. ''It was probably our most competitive effort, definitely of the series, but probably of the playoffs just in terms of understanding you got to play every second.'' The Warriors hadn't lost three straight games all season, and they never came close as they took back home-court advantage.