11.0-0-0 Bb7. 7...Qc7 championed by Garry Kasparov before he switched to playing 7...Qb6 exclusively. 7...Nbd7 popularised by Boris Gelfand. 7...Nc6?! is risky and of a dubious theoretical reputation due to the response: 8.e5! 7...h6!? the Poisoned Pawn Deferred. The line 8.Bh4 Qb6 9.a3 was played twice in the 2016 London Chess Classic (Caruana–Nakamura and Nakamura–Vachier-Lagrave), though White won both games. Verbeterde List: 6...Nbd7 Historically speaking, this was the usual reply until the mid-1960s, when the rejoinder 7.Bc4 put the move "out of business". Recently, however, ideas have been found by some Dutch players who call this variation De Verbeterde List ("The Improved Stratagem"). The idea for Black is to postpone ...e6 to retain more dynamic options (for example, to play ...e7–e5 in one move). The idea was tested by Petrosian, Belov, and others, but received popular attention and developed rapidly after use by Dutch player Lody Kuling in 2007. The most important developments include: 7. f4 Qc7 8. Qf3: 8... h6 9. Bh4 e5. A setup discovered by Lody Kuling. (This variation is covered by Ufuk Tuncer and Twan Burg in New In Chess, Yearbook 102.) The idea is to gain time over ...e6 by playing ...e7–e5 in one move. Later on it turned out that 9...g5! is even better. 8... b5 is the Neo Verbeterde List. This is a new way to play the Verbeterde List. It includes fianchetting the bishop to b7. (The variation is covered by Ufuk Tuncer in New In Chess, Yearbook 101.) 7. Bc4 Qb6 This is a move introduced by Lenier Dominguez. The idea is to win a tempo by attacking b2, after which Black can finish his development beginning 8...e6. The last word on the line has not yet been given. The whole variation with 6...Nbd7 is covered in the book by Ľubomír Ftáčnik in the chapter "Blood Diamond". 7. f4/Qe2 g6 is Grischuk's Verbeterde List, another modern way to meet both 7.f4 and 7.Qe2. The idea is to castle kingside rapidly and then start to attack with ...b5–b4, while wasting no time with the e-pawn. English Attack: 6.Be3 This has become the modern main line. Since the early 1990s, the English Attack, 6.Be3 followed by f3, g4, Qd2 and 0-0-0 in some order, has become extremely popular and has been intensively analysed. Four lines are then usual for Black: The classical 6... e5: If White plays 7.Nb3, then Black usually continues 7...Be6,