It is currently my main weapon of choice as White over the board, as was the case in 2008, 2009, and 2014.
I think the older lines are dubious (1.b4 e5 2.Bb2 Bxb4 3.Bxe5 Nf6 and now 4.Nf3 or 4.c4), but Carlsen's idea, which Carsten Hansen goes into detail with in his book on 1.b4, is fully sound and what I currently play, which is 4.c3. White, at the right time (Hansen explains when that time is), trades off the Bishop for the Knight on f6 and plants his pawns on the dark squares.
The other lines are a non-issue for White provided you know them.
I will be playing 1.b4 at the US Masters in 2 weeks.
This major work of the famous Russian chess openings theorist Alexei Sokolsky is distinguished by its original approach to the subject.
Especially valuable is Sokolsky’s concentration on the influence and use of not only the central squares of the board but also those important squares that are contiguous to the center.
Do many chess players not find this opening sound enough to add to their opening repertoire .