Petros vs Stonewall- ideal Petrosian vs A Pirtskhalava, 1947   (A90) Dutch, 36 moves, 1-0 Stonewall, cf Thi D Palo vs A S Hagen, 2001 (A90) Dutch, 44 moves, 1-0 Stonewall, cf Thi- didn't swap B off on e4 A Whiteley vs I Bern, 1991 (A80) Dutch, 31 moves, 0-1 St-wall E Najer vs A Iljushin, 2005 (A90) Dutch, 100 moves, 1-0 4 games