After three straight blowouts, the Cook Inlet Conference hockey tournament produced a tight game Tuesday at the McDonald Center.
Third-seeded West held off sixth-seeded Eagle River 3-1 to join South, Dimond and Service in Thursday's semifinal round.
Second-seeded Dimond sailed past Bartlett 12-1 on Tuesday, and on Monday, top-seeded South swamped eighth-seeded East 13-0 and fifth-seeded Service knocked off fourth-seeded Chugiak 8-1.
Service's victory ended Chugiak's hopes of repeating as state champs. All of the tournament's first-round winners will advance to next week's state tournament in Wasilla, while the season is over for the first-round losers.
South will take on Service in a 6:30 p.m. Thursday semifinal game at Ben Boeke Ice Arena. Dimond will meet West at 7:15 p.m. at the McDonald Center.
Dimond got goals from nine players Tuesday at Ben Boeke Ice Arena.
Jaiden Gibson delivered a hat trick and Sean Carey and Gavan Hardy both scored twice for the Lynx, who led 4-0 after the first period and 9-0 after the second period.
Dimond outshot Bartlett 40-10. The Golden Bears avoided the shutout with a third-period goal from Andrew Vanderbos.
Chad Beals made 27 saves for Bartlett, and Gabi Gibson had nine for Dimond.
Ten players provided goals for South on Monday, including three who score two apiece — Trevor Sawicki, Hayden Fox and Nicholas Corbin.
The Wolverines outshot the undermanned T-birds 53-7. Lane Fox made 36 saves and Lenaya Braniff add four for East; South's Alec Pavia stopped all seven shots he faced.
In Service's win over Chugiak, Luke Martensen racked up six points on two goals and four assists and Landon Hill tallied five points on two goals and three assists.
Kevin Taunton made 23 saves for the Cougars. Riley Fugere had 29 for Chugiak.