Champion Anatoly Karpov of the Soviet Union and emigre Grandmaster Victor Korchnoi's chief aide announced the players were no longer on speaking terms.

Following Korchnoi's lead in dropping "all friendly communication" Karpov offer the draw-as he made his 44th move-through deputy arbiter Miroslav Filip of Czechoslovakia Korchnoi paused for a short look at the position, then accepted.

With nine draws in 10 games, Karpov retains a lead of 1-0 in victories. Draws do not count, the winner being decided by the first players to win six games.

At this rate, if the two players maintain their stamina, this high proportion of draws could result in the longest major chess match in history.

The name itself returned to the line that Karpov had used in his lone winning effort. However, Kaorchnoi improved with the standard "book" continuation 10. P-Q5 (1) Karpov's reply-11. N-KN5 (12) is a little know sideline that sets tactical traps, but gives up white's positional advantage. Korchnoi finds the right reply and has equality for the middlegame. If 12 . . . &xN. white has 13. Q-B3. B-Q2 14. BxB7 ch. K-Q1 15. P-K6 and black is in trouble.

Then Karpov overstimates the chances offered by his 22. R-Q4. Instead of exchanging bishops at move 23. for an immediate draw, he proceeds into a questionable endgame. Korchnoi's rooks become the more active and the white queenside pawns are the weaker.

Korchnoi's 34. . ., B-B3 gave him a substantial advantage. The white rook at kings-rook-5 is a dead piece for the next few moves. However, again, the time control was approaching.

When Karpov attacks the queen-bishop-pawn-with 35. R-B4-Korchnoi defends automatically with a king move. Then, 36. B-N8 (1) forces the pawn forward and-poof:-the "dead" rook comes back to life attacking the kings-pawn.

The remainder of the game is quite dull.