4 knights Rubinstein (3 part series)

When the great 'uncrowned king' Akiba Rubinstein introduced the variation that bears his name (1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4) into praxis at San Sebastian 1912, overnight the formal fearsome Spanish Four Knights, which up until then was a popular opening, went into rapid decline. And now, in the latest series of Gambit Guide, GM Boris Alterman shows why even today this is a good line to have in your arsenal, as the resulting pawn sacrifice allows Black to dominate the centre.