piece sac Spassky vs Suetin, 1958  (D86) Grunfeld, Exchange, 53 moves, 1-0 uncastled king Spassky vs S Witkowski, 1959  (D86) Grunfeld, Exchange, 32 moves, 1-0 ...e6 is helpfull S Johannessen vs B Larsen, 1963 (D86) Grunfeld, Exchange, 42 moves, 0-1 Bh6! coming H Berliner vs G Borisenko, 1965  (D86) Grunfeld, Exchange, 17 moves, 1-0 h4! H Berliner vs K Messere, 1965  (D86) Grunfeld, Exchange, 22 moves, 1-0 attack on c4 M H Horton vs F N Stephenson, 1967 (D86) Grunfeld, Exchange, 32 moves, 0-1 combination on d5 R Persitz vs Tukmakov, 1969 (D86) Grunfeld, Exchange, 46 moves, 0-1 7 games