Reprinted from yesterday's late editions.

Victor Korchnoi shooting for a chance to challenge world chess champion Anatoly Karpov next year, won the second game of his match with Boris Spassky Wednesday in Belgrade. The first hame, played Monday and Tuesday, was a draw, making the score of the match 1 1/2 to 1/2 in Korchnoi's favor. The first player to reach 10 points (counting one for a win and 1/2 for 2 draw) will be eligible to play Karpov for the championship.

Korchnoi who defected from the Soviet Union last year lost the final challengers' match to Karpov in Russia three years ago under what he now calms was severe negative presure from the Soviet chess bureaucfacy. The victory over Spassky is a long step toward the revenge he has been seeking against Karpov and the chess establishment in his native country.

Playing black, Korchnoi used a French Defense, which followed standard "book" lines for the first 11 moves. Spassky tried an innovation on the 11th, and Korchnoi did the same. By move 18, experts were predicting a draw; but Korchnoi got the upper hand in middle-game complications, offered a pawn sacrifice on his 30th move, which Spassky first declined but finally had to accept, and then used the superior development of his places to force a conclusion. Spassky resigned on the 40th move, facing the loss of his queen.