The Blues scored two power-play goals in 17 seconds in the third period and the beat the Chicago Blackhawks 4-3 Sunday afternoon at Chicago Stadium. Brendan Shanahan tied the game 3-3 and Brett Hull scored the game winner 17 seconds later. Jeff Brown and Denny Felsner scored the other Blues goals. Brian Noonan had the hat trick for the Hawks, who also had some very good goaltending from Ed Belfour. Blues goalie Curtis Joseph was solid down the stretch to preserve the Blues lead.  The Hawks came out strong in the first period, outshooting the Blues 6-1 and taking a 1-0 lead on Noonan's first goal. Right after an interference penalty on Rick Zombo had expired, Keith Brown intercepted a clearing attempt at the blue line and passed the puck to Steve Larmer in the right circle. Larmer fired a long slap shot, and Noonan deflected the puck between Joseph's pads. After the goal, the Blues picked up the intensity and went on to outshoot the Hawks 10-9 in the first period.  Jeff Brown tied the game 1-1 at 3:12 of the second. Nelson Emerson broke in on the left side, got by Craig Muni and pushed the puck across the slot. Belfour came out to play the pass and shoveled it to the right boards, where Brown collected it and slapped it in before Belfour could get back to the goal.  Two minutes later on a Hawks power play, Belfour stopped Rich Sutter on a short-handed break-in. Chris Chelios picked up the puck and passed it to Jeremy Roenick who carried it on right wing and found an open Noonan with a nice pass across the slot. Noonan fired it past Joseph at 5:30 for the 2-1 lead.  Noonan completed his hat trick 3:11 later to increase the Hawks' lead to 3-1. Stephane Matteau made a nice pass from the right boards to Noonan who beat Stephane Quintal by driving to the net. Joseph had no chance as Noonan deflected the puck in the net.  Denny Felsner reduced the Blues deficit to 3-1 at 12:49 after picking up the rebound of Basil McRae's slap shot from the slot. Janney set up McRae for the shot, and the puck sailed wide of the net and bounced off the end boards to Felsner. Felsner sticked the rebound into the partially open net. The Blues outshot the Hawks 10-5 in the second period.  With the Blackhawks leading 3-2 at 9:56 of the third, Stephane Matteau picked up a high sticking penalty. Just 53 seconds into the power play, Steve Smith was called for slashing, giving the Blues a 5-on-3 advantage for 1:07.  The Blues didn't waste time as Brendan Shanahan scored just 23 seconds into the two-man advantage to tie the game 3-3. Janney found Hull in the slot, and Hull fired a rocket at Belfour. Jeff Brown collected the rebound and passed it to Shanahan in the left circle. Shanahan beat Belfour from a sharp angle.  Just 17 seconds later, Hull scored the game winner for the Blues. Nelson Emerson broke in on right wing, carried the puck behind the net along with two Hawks defensemen. Emerson made a nice pass to an unchecked Hull in the slot, and Hull beat Belfour to put the Blues up 4-3.  The Hawks had several chances to tie the game in the final minutes, but Joseph made some brilliant saves to prevent the Hawks from scoring. He stopped Troy Murray point blank from just right of the crease with 2:30 left in the game. The Blues killed off a late Hawks power play, with Rich Sutter clearing the puck with his hand as it was trickling along the goal line. The Blues held on to win the game. The Hawks oushot the Blues 13-7 in the third period, totaling 27 shots on goal for each team. The Blues special teams were excellent in the game. The Blues killed 6 of 7 Hawks power plays, and scored twice on on four power play chances. The Blues ranked among the best special teams in the league. They rank 2nd in penalty killing and 3rd on the power play.   The game was carried live on ABC, the first time an NHL game other than an All-Star game has been shown on network television since May 24, 1980, when CBS carried Game 6 of the Stanley Cup finals.  The best-of-seven series continues Wednesday in Chicago and Friday and Sunday in St. Louis.  Box score --------- Blues 4, Blackhawks 3  BLUES       0    2    2   --   4 CHICAGO     1    2    0   --   3  FIRST PERIOD     CHI -- Noonan 1 (Larmer, K.Brown), 8:17.     Penalties -- Shanahan, StL (holding), 2:28; Zombo, StL (interference), 6:00; Murphy, Chi (high-sticking), 11:30; Grimson, Chi (boarding), 14:39; Zombo, StL (holding), 18:46.  SECOND PERIOD     STL -- Brown 1 (Shanahan, Emerson), 3:12.    CHI -- (PPG) Noonan 2 (Roenick, Chelios), 5:40.    CHI -- Noonan 3 (Matteau, Sutter), 8:51.    STL -- Felsner 1 (McRae, Janney), 12:49.     Penalties -- Baron, StL (interference), 4:33; Wilson, StL (tripping), 9:31.  THIRD PERIOD     STL -- (PPG) Shanahan 1 (J.Brown, Hull), 11:12.    STL -- (PPG) Hull 1 (Emerson, J.Brown), 11:29.     Penalties -- Shanahan, StL (roughing), 1:54; Matteau, Chi (high-sticking), 9:56; Smith, Chi (slashing), 10:49; Baron, StL (roughing), 14:23.  SHOTS ON GOAL  BLUES       10    10     7   --   27 CHICAGO      9     5    13   --   27  Power-play Opportunities -- St. Louis 2 of 4; Chicago 1 of 7.  Goaltenders -- St. Louis, Joseph, 1-0-0 (27 shots-24 saves).                Chicago, Belfour, 0-1-0 (27-23).  Referee -- Kerry Fraser. Linesmen -- Kevin Collins, Brian Murphy. A -- 16,199.