The Los Angeles Times Los Angeles, California Monday, July 25, 1966 - Page 38
Russian Aces Register Chess Tourney Draws
Two Russian aces registered draws in the only games completed Sunday afternoon in the fifth round of the Piatigorsky Cup International Chess Tournament at the Miramar Hotel in Santa Monica.
World chess champion Tigran Petrosian of Moscow took 33 moves in his contest with Jan Donner of Holland.
Actually, Donner had the advantage, having won a pawn in the middle game complications. With opposite colored bishops on the board, and a number of pieces exchanged, there was not sufficient force to win.
Faces Hungarian
Boris Spassky of Leningrad faced Lajos Portisch of Hungary who had defeated Petrosian earlier in the tournament. Portisch gave up a pawn to establish his pieces in advanced posts.
After a flurry of exchanges the game was quickly equalized, and the draw agreed after 32 moves. The other three games were adjourned after hours of play, all in difficult situations.
U.S. chess champion Bobby Fischer of Brooklyn had established an attacking position after 41 moves, against Wolfgang Unzicker of West Germany. Unzicker had considerable resources, however.
Boris Ivkov of Yugoslavia and Samuel Reshevsky, Spring Valley, N.Y., adjourned after 42 moves, following a series of fast moves required by the time limit. Ivkov picked up a valuable pawn just before the session ended, with favorable prospects for the ending when continued.
Also adjourned after 41 moves was the game between Bent Larsen of Denmark and Miguel Najdorf of Argentina. Najdorf had sacrificed a pawn to open lines on the king's side, but this was probably premature.
In the final position, Larsen had retained the pawn plus, but had two sets of weak doubled pawns to defend.
Leading Tournament
Portisch and Spassky are leading the tournament with three points. This total may be exceeded, however, depending on the outcome of the unfinished games. The sixth round will be played today from 1 to 6 p.m. The pairings are: Spassky versus Najdorf, Fischer versus Larsen, Petrosian versus Unzicker, Reshevsky versus Donner and Portisch versus Ivkov.
