It is also possible to make nice discoveries with the Rossolimo/Moscow Powerbook 2020.
a) Moscow Variation: After 2...d6 3.Bb5+ the modern 3...Nd7 does not look so good at all (but 3...Bd7, on the other hand, does). “Simply” 4.d4 cxd4 5.Qxd4 a6 and as well as the traditional 6.Bxd7+ Bxd7 7.c4 White also has 6.Be2!? with fresh ideas and almost more than 1500 games in the Powerbook (Mega+Corr 2020 approx.100 games).
b) Rossolimo Variation: 2...Nc6 3.Bb5 g6 4.0-0 Bg7 5.c3 (Magnus Carlsen has not yet had to face this move) 5...Nf6 6.Re1 0-0 7.h3 (7.d4 has proven less successful) 7...e5
and now the sharp 8.d4 can be studied with the Powerbook, which in this case is based on the statistics of over 1000 games (Mega 2020 approx. 130 games).