Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bb5/3...a6/4. Ba4/4...Nf6/5. O-O/5...b5/6. Bb3/6...Bc5

=Ruy Lopez=

Modern-Arkhangelsk Variation
Black wagers that his dark-square bishop is more active here, while his light-square bishop may yet wish to develop along either diagonal. Transpositions to the Old Arkhangelsk (6...Bb7) are common, but there are independent lines involving ...Bg4 as well. White's main ideas in the position are a4, attacking the weak b5 pawn at once, c3 followed by d4, gaining central space and taking a tempo off Black's c5 bishop, or some combination. Also played, but less critical, are 7. Nc3 and 7. d3. The central fork trick 7. Nxe5 leaves white without the prospect of greater central control than his pawn on e4 can provide.