Karpov, Challenger Play to 9th Draw; Score Tied

The 13th game of the world chess championship match between champion Anatoly Karpov and challenger Gary Kasparov was drawn Tuesday in Moscow. The score remains tied at two wins apiece, plus nine draws, giving each player a total of 6 1/2 points.

Game 14 will be played on Thursday.

Once again, the players opened with the Nimzo-Indian Defense. Playing black, Karpov varied from his choice of 4 . . . 0-0 in Game 11 and reverted to his 4 . . . c5, as in the first game of the match. This signaled that he had rehabilitated the line of play which brought him his first defeat, and, indeed, he soon demonstrated equality. Kasparov sacrificed a pawn on move 10, but gained no advantage when he recovered it at move 15.

Six wins are needed for victory. If neither player achieves six wins, then the leader in points after 24 games wins the match.

Here are the moves of Tuesday’s game:

Kasparov-Karpov 13: 1 d4 Nf6 2 c4 e6 3 Nc3 Bb4 4 Nf3 c5 5 g3 Nc6 6 Bg2 Ne4 7 Bd2 Bxc3 8 bxc3 0-0 9 0-0 f5 10 Be3 Nxc3 11 Qd3 cxd4 12 Nxd4 Ne4 13 c5 Nxd4 14 Bxd4 b6 15 Bxe4 fxe4 16 Qxe4 Ba6 17 cxb6 axb6 18 Qe5 Qf6 19 Qe3 Qh6 20 Qxh6 gxh6 21 Rfe1 Bc4 22 a3 b5 23 Rad1 Rf5 24 Bb2 Rd5, Drawn.