Thoroughbred owner Mike Lasky has advised the Maryland Racing Commission that he will not seek to renew his owner's license for 1983. Lasky, also known as Mike Warren, operates a mail-order operation that sells tips on horses, a factor that led the commission to oppose renewal.

Lasky's attorney, Glenn E. Bushel of Baltimore, notified the commission of his application withdrawal after a hearing.

Lasky currently has seven horses in training. He will have to disassociate himself from them before they may race in Maryland.

The stalemate between the union representing most of the track employes and the managements of Laurel, Pimlico, Bowie and Timonium continues. The contract will expire at midnight Friday.

Alvin Ackman, head of the Race Track Division, Local 27, of the United Food and Commercial Workers, said, "The tracks are preparing a work force to supposedly take the place of our people should we go out on strike. That's playing with a loaded pistol. But we're confident we can work things out."

Ken Schertle, Laurel general manager, said, " . . . there has been been some side negotiating going on that could help avoid any trouble."

Chess Move passed Initial Encounter in the stretch and went on to win yesterday's feature at Laurel Race Course by a head.

Dasu finished a distant third, but was placed second when the stewards found that Initial Encounter had fouled at the start.