6 KGA: bishop's gambit, Chigorin's attack/Gifford variation
7 KGA: bishop's gambit, Chigorin's attack (Gifford variation)
12 Nimzo-Indian: 4.e3 c5, 5.Ne2 (Rubinstein)
13 Nimzo-Indian: 4.e3 c5, 5.Ne2 (Rubinstein, anti-H\"ubner system)
15 Ruy Lopez: closed (8...Na5)
16 Ruy Lopez: closed (9...Na5)
18 All occurences of "defence" to "defense"
19 All occurences of "manoevre" to "maneuver"
20 All occurences of "centre" to "center"
24 Queen's pawn: London system