[what is this?]

[what is this?]

2 Knights C55 3 games, 2007-2008 B90 6 Be3 Games in the Najdorf Byrne (English) attack 5 games, 1971-2007 Bishop's opening Various Bishop's variations. 2 games, 2001-2007 C45 Scotch games--recent examples 4 games, 2007-2008 Dreihundert Shachpartien Tarrasch's 300 Games 6 games, 1879-1880 For replay 4 games, 1926-2006 SC related to games on SchemingMind 1 game, 2001 Schlechter 3 games, 1894-1900 Tartakower and Dumont 500 Master Games of Chess 6 games, 1834-1933 Urosov/Scotch gambits, etc 1e4 e5 2 Bc4 Nf3 3. d4 and some variation. Wikipedia shows that the following are closely related: 3.d4 (Ponziani's Gambit) * 3...exd4 4.Qxd4 Nc6 (Center Game, by transposition) * 3...exd4 4.Nf3 (Urusov Gambit) o 4...Bc5 5.0-0 Nc6 (Max Lange Attack, by transposition) o 4...Nc6 (Two Knights Defense, by transposition) o 4...Nxe4 5.Qxd4 (Urusov Gambit Accepted) 1 game, 1993